DexCool

1996 Chev van coolant system keeps sludging-up, have had it flushed 3 times in the last year. Technicians blamed the antifreeze: Dexcool. Said it was a common problem.

I bought my 2001 potiac grandam brand new,it ran good at first then at 45,000k the tires were gone,then at 130 k dexcool has eaten my radiator,at 164k dexcool has eaten all my intake gaskets.Now at 195k dexcool has eaten my gaskets in less then a year.

My 1996 Lumina developed a problem with the air conditioner. I had the problem fixed, but, it continued to stop working. Then I noticed that the container that held the overflow of antifreeze was starting to get murky and dirty. I had the radiator flushed, but, within a few months I stated to have the same problem. Then I started to notice that the antifreeze level continued to be low.

in nov. 2000 traded in 97' pont. grand am, I loved that car, great gas mileage,5 speed tran.super fun car to drive. had about 75,000 miles not one single problem.

The intake manifold gasket on my 2003 Chevrolet Impala blew and water leaked into the engine. There was a sludge that appeared in my oil line when oil was changed. I routinely have my oil changed and the sludge was never noticed.

On February 13, 2007 I contacted General Motors about my rear manifold gasket leak. Since I read many articles about this leak being a common problem, I thought they would offer to pay all or part of the repair. I was assigned Service Request No. 710482357115.

2004 Pontiac Bonneville, 48k miles. I took it in for service and was informed that my intake manifold and other hoses were eaten through and starting to leak.The dealership informed me that this was a common problem w/ cars with this anti-freeze. They wanted $760 to fix the problem. I argued that they (the dealership or GM) were the ones who put this product in my car and that they should fix it.

Recently, we noticed while our 2002 Chevy Venture was idling the temp would increase to about 225 degrees. This vehicle was purchased used and I am unsure of any previous engine work on this vehicle. The vehicle haas 66k miles. Concerned, I reviewed the cooling system. I found the water pump was leaking out of the weep hole and proactivly I replaced it along with the thermostat and serpentine belt.

I own a 2001 Saturn and like most the manual specifies Dex-Cool Coolant/Antifreeze. In the past month I've had a leak in the intake manifold AND the water pump. They now have products you can use in any make/model of a car so I will be using that from now on. It's disturbing from a consumer's point of view that they would market this product and continue to market it even after all the problems.

The intake manifold gasket on my 2000 Cadillac Escalde failed. No more GM products for me.

I own a 1998 Lumina. I received a class action letter in the mail concerning the Dex-Cool in GM products. I have had problems with my car in the last two years. The anti-freeze in my car kept leaking, the check engine was also staying on. Had the anti-freeze problem fixed and the check engine light is still on and my mechanic doesnt seem to know why. About a month or so ago I have noticed it has started leaking again.

We have a 2000 Pontiac Montana with 56,895 miles on the odometer as of February 18, 2007. We like the styling and functionality of our Montana, but it seems there is a defect in the coolant system that is very troubling.

With slightly more than 47,000 miles, on our 2001 Pontiac Montana, we needed to replace the manifold intake gasket and the head gasket. GM refuses to accept any responsibilty for the problem, claiming simply that the vehicle was out of warranty. While that position is understandable, it isn't acceptable when they are aware that their vehicles are know for these two issues.

I own a 2003 Malibu that I maintain according to owner's manual. I'm still paying on the car. It only has 43k miles on it and now I am repairing the intact manifold gaskets that are causing the antifreeze to mix into my oil. major repair to the tune of $770....so far. I called GM because the mechanic told me that Dex Cool caused the problem and I was told to keep using dexcool.. BS.

Recently my 2003 Pontiac Aztek began to run hot -- just over 100k. I took it to my mechanic. He told me the problem was coolant Dexcool, and that it had deteriorated the Intake Manifold Gasket, which would need to be replaced -- at a cost of 500+ dollars.

I have been having a problem with my coolant and oil constantly mixing together. This has been ongoing for a couple of years now. I took the car to the dealer and they wanted $1700 to replace the lower manifold gasket. I took it to someone else and had this replaced for half the price but I am still having the same problems and the people that fixed my car said that it is the engines that GM uses in all of their cars that causes these problems and they will always be on going.

I am facing a 2000.00 bill for repairs to gaskets due to the use of dex-cool. I am on disability and 2000.00 is out of reach for me.I will never buy a GM product again.

I own a 2005 Equinox with 21,000mi. I returned home on 2/9/07 when the cabin filled with the awful odor of antifreeze. I pulled into the garage and the coolant spilled all over the floor. I assumed the water pump was faulty, the local Chevy dealer said it was a faulty head gasket. DexCool is the most likely of culprits. Now I am left with the uncertainty of when the next cooling system part will fail. Will it be on a trip, highway, at night? The dealership said that using a different coolant would void the warranty. I may now sell the vehicle that I have been very happy with due to poor engineering and lack of GM concern.

Took Buick in with 65000 miles because heater stopped working and coolant light on caused car to stall. Took to this dealer for service and paid over $500 to fix...was promised it was the intake manifold which was replaced and fixed and drove it 3 miles and broke down again with exact same symptoms. Dealer towed back to their garage; didn't look at it for 3 days...when I enquired they said they would get it checked that morning and called back 1 hour later saying head gasket blew and would be additional $734.00.

I have a 2003 Chevy Malibu that I was just told would cost me close to $1000 to fix because the lower radiator gasket needs to be replaced. I was wondering why it needed to be replace so soon being as how my car is only about 4 years old. I thought it was very odd.

I have a 1996 Oldsmobile Cutlass supreme sl and it has 127,000 miles on it and i notice that it was steaming from underneath the hood. Took it to a mechanic and they said it was a intake manifold leak. So a week later I went to check my oil and it was all muddy. Now i am only 17 and i cant afford all of these repairs because of GM's negligence to fix their problems with there cars.

Like many before me as I now learn. zi bought a 2002 Malibu with DexCool as the coolant. It has now damaged my enginge.

I purchased a 2003 Pontiac Grand Prix in 2003 and after only 39,000 miles on it, the manifold intake gasket was leaking and needed replaced. After searching on line I come to find out that Pontiac GMC has had hundreds of complaints on the same malfunctioning gasket and are well aware of the problems that their loyal customers are having, however, have done nothing to correct the problem.

I've had Dexcool leaking from my car for about a year now. No one could find a leak but reading this forum helped me understand why it was leaking. I won't buy a GM car again. I am buying foreign Honda, Toyota, etc. I tried to buy American but the cars are junk and the companys won't stand behind them. If they won't stand behind me why should I stand behind them??!!

I have had to replace the engine in my 1996 Chevy Lumina 2 times and it's now in the shop a 3rd time all due to the engine coolant. The first time the car had 84,000 miles on it, the second time at 161.000 and now again at 180.000. All 3 times I have been told that the coolant eats through the intake gaskets, which in turn hurts the bearing's. The first time it cost me $2,710.02 the second time it cost $2,828.00 I haven't gotten a totally on what this 3rd repair will cost me bacause it is still in the shop. I also have had towing charges. I have read hundreds of complains from other's that have experienced the same problems.

I had the radiator flushed in my 1998 Monte Carlo about a year ago, thats when my check engine light started to come on. In North Carolina a new rule was passed that you cannot pass inspection with that light on.

I recently got word that my car wasn't going to pass inspection. come to find out my coolant was leaking through the intake manifold and i have a sneaking suspision after reading the reviews that Dexcool was the problem.

I have a 2001 Malibu, and had the same problems with the Dex-Cool. I've spent almost $700.00 just replacing the intake manifold gaskets that had been eaten by the Dex-Cool. My mechanic (who is ASC certified), found a solution. He flushed out the Dex-Cool and replaced it with the old-style green antifreeze. The only other problem that Im having now is that my fans are running constantly.

James W Saint Paul MN (02/06/07)

I purchased my 1999 Buick Century new on 3/29/1999. At 48,284 miles I had the coolent flushed as PM measure since I wanted to keep the vehicle for awhile. At 79,811 miles I was having additional PM service (LOF, tire rotation, brake line flush and transmission flush).

If you use or know anybody who uses DEXCOOL antifreeze (it is an orange or red antifreeze) in the radiator of their vehicle, please tell them to stop using it and go and get their radiator flushed and refilled with any green antifreeze.

I have a 2006 Chevrolet Impala. It has 21,900 miles on it. I opened up my hood and checked the my oil, and coolant level. Well to my surprise, when I opened up my radiator, I saw small amounts of Sludge built arround the radiator cap, and along the radiator fluid housing unit. I called Manufacturer, and they stated that it was normal. My car has Dex- Cool Coolant. I read the horror stories about this coolant and I wanted know should I flush entire system and get a different brand of coolant, or should I stay with the same coolant. Please help, I'm trying to avoid a costly repair.

Brought my 2001 Olds Silhouette in for a coolant leak. I was informed by the service rep at Walser chevy in Plymouth Minnesota that it was the intake gasket. It had failed and coolant had mixed with my engine oil. They want $1846.00 to fix the gasket. I called a friend to tell him about how much they wanted! He started laughing because he just fixed his (Pontiac) same engine same year. He did his himself and it cost $98.00 and 10 hours of work. I have owned chevy's my whole life. I am angry that GMC is not standing by their mistake in this motor. Where is your loyalty?

I guess I'm now one of the people that have had their GM truck distroyed by DEX-COOL. Manifold gasket at 58k miles on my 1999 GMC Sierra 2500, $900. (Who ever has heard of a factury Manifold gaskit failing on a every day driver with low miles.) I'm a little concerned when my mechanic tells me all the problems people are having with this product, and this is the first I've heard of it. Will some of you please start contacting the press and get this out to the public. This is a disaster. No wonder Toyota is going to pass GM in sales.

Own an '03 Montana and a '98 Grand Prix. The Montana has already had the intake gasket replaced because of the DEXCOOL issue, and now the Grand Prix is demonstrating the same symptoms that the Montana did prior to its demise. When will GM own up to this and fix their problems?!?

My 2000 GMC Jimmy V-6 4.3L was at the mechanic for a 60,000 mile service 7/22/05 at which the mechanic informed me the truck needed a back flush of the cooling system & would have to add 2 gallons of Dex-Cool .I o.k.d the service to be done as we were moving out of state & no longer would he be servicing my truck.

I first noticed that I was not getting any heat. The fan was blowing cold air. A few minutes later I noticed the engine temperature gage was abnormally high. I checked the coolant level and it was very low. I replaced the lost coolant. Heat returned and engine temp was normal. Garage discovered leaking water pump and it was replaced. 3 weeks later the no heat, high engine temp symptoms returned. Garage discovered coolant leaking from the intake manifold gasket. Upon its replacement, garage also discovered breach of gasket to oil passage.

What was I thinking?

I have been made aware that my 2005 GMC Sierra is leaking coolant/oil. This calls for the replacement of the lower intake gasket. This truck only has 47,000 miles on it. I was told by the auto repair shop to check for a recall because this is a known defect of this model truck. He has seen alot of them. There is no recall that I can find. I feel that this is a problem that needs to be addressed.

I had a massive coolant leak coming from the intake manifold area underneath the air conditioner compressor mount. I would fill up my system with a 50/50 mix of water and Dex-cool antifreeze and my system would be empty after driving about 1 mile.

I have replaced the water pump, heater core, radiator and head gaskets. What's next?

I have a '98 Chevy Venture. It's been garage kept since day one and the only things I've changed are brakes, oil, shocks and filters. Now, it has 88k miles and DexCool in the oil pan. It's also leaking DexCool in the area of the thermostat. How terribly disappointing. We were so worried about the chassis and body and felt great about keeping it in the garage since we bought it...only to find out the engine was built with bad gaskets and is now dieing from the inside out.

I have a 1997 GMC Sonoma with 65,000 miles on it. Just Thursday night my Check Guages light came on after my Check Engine light had been on even after an oil change. The engine was heating up and nearly in the red. When I opened the hood to add water I discovered this gross reddish brown slude built up on the radiator cap and all over the coils of the radiator.

I've got a 97 GMC Sonoma with 73,000 miles on it. My engine was running hot so I looked at the backup coolant resorvior and noticed the brown sludge. I'm about to get screwed huh? And it's going to be hard you say? What's that GM, oh your not even going to use lube on me, great.

The red antifreeeze ate my thermastat housing case.

dexcool problems begining to appear on oldsmobile alero v6 3.4 engine yr.2000 only 30000 + miles.

DexCool Problem 12-06 to 1-07 Engine Started losing antifreeze and at 87k miles the dealer said the intake gaskets were leaking. Intake gaskets were replaced then less than 700 miles later the oil pressure is lost during engine idle. Van was taken back to the dealer and metal particles were found in the oil pan. Engine then had to be replaced.

Dex Cool Coolant has caused leaks in the cooling system of my 1998 Chev Malibu.

Last year we had to have an intake gasket replaced after a mechanic found anti-freeze leaking into the oil. Last week my van overheated and antifreeze is still leaking into the oil. The van continues to overheat within minutes of starting it up.

Had I known then what I know now about my 1999 Pontiac Montana... After thinking that it was just a thermostat.. 982 $$'s later.. no guarantee that the engine isn't damaged or ruined. who knows if it is going to be ok now.. When you have no recourse but to get it fixed.. Why when companies realize that there is something serious wrong about a product, why are we.. the consumers forced to just take it? What can a person do? Take it.. make the repairs.. Does GM give a .. ?

I have a 2000 Pontiac Grand Prix GT with roughly 93,000 miles on it. My low coolant light came on last week, and I started to notice small amounts of the reddish colored Dex Cool antifreeze in my parking spot. I immediately called my mechanic and arranged to bring the car in on Saturday (yesterday) to have it looked at. At that point, I figured I probably just had a leaky hose somewhere, since I had already replaced the radiator in October of 2006. On my way to the auto repair shop, the service engine soon light also came on. After checking the car out, my mechanic informed me that it needs new head gaskets. He said it's common in GM vehicles that use Dex Cool. He said that Dex Cool causes premature deterioration of the head gaskets and upper intake manifold, as well as numerous other engine parts. I asked him how many miles a car that uses regular green antifreeze should get before head gasket replacement becomes necessary, and he said roughly 130,000 to 150,000 miles. Just to give you a little more history, in 2003 when the car had about 36,100 miles on it (BARELY out of warranty), I had to replace the upper intake manifold (nearly $700). I fought with Pontiac and eventually got them to cover it. Then, about six months later, I received a recall for the very same thing, so I took it to the dealer and had the recall work performed.

DexCool ate away the intake gasket and o-rings in intake manifold costing hundreds of dollars. Water pump also had to be replaced.

I took my 2002 Chevy Venture Van to Ben Davis Service Department because the vechicle was not warming up and my back up resorvoir was empty. The test came back that the lower intake manifold gasket is leaking and would cost up to $1000.00 to fix. I have only 57,000 miles on the van and I purchased it new in January, 2002. I took the van to a Radiator Specialist and he stated they have done hundreds of chevy vans for the lower intake manifold gaskets leaking. The dealer would not come down in price so I am stuck with $1000.00 plus repair. What is next? The Dex-cool coolant is the cause but GM will not confess up to it.

Purchased two minivans so far and both of the vans the heads have cracked from the Dex Cool Coolant. I got the first one repaired and spent a pretty penny doing that. I since sold that van and bought another one in which an older woman had owned and it was very well maintained and the heads have since cracked on that. I could not afford to fix this van and I would like to know when this Class Action Lawsuit will be pursued. Please contact me asap

My 1997 is leaking coolant from the intake manifold and causing coolant to get into the engine oil. I noticed numerous complaints regarding this issue and wanted to ad mine along with them for a possible recall.

I have a 2000 Chevy Venture and need to replace both intake gaskets(upper and lower) due to leakage caused by Dex Cool.I also replaced the water pump and thermostat 3 months ago. Notice a thick brown sludge in by reservoir. GM states that the cooling system will not need maintenance for at least 150k.I only have 81k on the van Hmmm.

I did not know the reason why my 2000 Grand Prix needed a new Transmission at 100k. But after reading this I too have noticed the dreaded Brown SLudge. What is my next step. Should I get it repaired?

Dex Cool has caused me to have to have numerous coolant associated repairs to my car. It is in the shop for the fourth time now with the water pump leaking. I am sick of this car. General Motors is responsible for the issue and all the consumers involved need to get restitution for the money they have spent due to the DEX COOL issues GM is choosing to ignore. I have totally lost faith in General Motors and now see myself never buying another GM vehicle. I have spent the last two years letting anyone I talk to about the issue know about the problem with DEX COOL. Here we go again with BIG BUSINESS taking down the consumer and costing them money they should not have had to pay.

My vehicle has about 80,000 miles. I've been told by my GM dealer that my manifold gaskets are leaking anti-freeze and need to be replaced for about $ 2000. I have other vehiles which have lasted far longer than this. The Anit-freeze's claim that it will last for 150000 miles seems to bogas, since it can not promote or evan sustain seal life for half of the claim.

In Sept while visiting the Berkshire Mts.,MA we noticed my 1999 Pontiac Grand Priz was heavily leaking coolant and the heat guage on the dashboard was rising. We stopped at a garage and the mechanic immediately asked how much mileage on the auto, which was 71,430, and stated that, That's about right and then told me about the problems of Dex-Cool.

Less than 100,000.00 head gasket, intake and radiator went also on the 1998 Pontiac Transport.

I have a 1997 Chevy Monte Carlo that has 150,000 miles, the radiator had to be replaced due to the buildup of sludge from the Dexcool not being changed back before it reached 100,000 miles. Now it is starting again with the heater blowing hot and cold air on and off. The new radiator has a small leak and has the same rust looking sludge in it just after 50,000 miles.

My low-coolant light came on two days ago. I am now in a panic, after reading about all these consumer complaints about Dex-Cool, since the woman I recently bought my 2001 Malibu from stated she had to have the intake manifold replaced. She has no written documentation, since her brother did all the work. NOW WHAT DO I DO??? According to the footnote on this complaint site, the lawyers say, if your car has DexCool in it, use it for replacement and top off. If it came from the factory with 'green' antifreeze, use that. WHY ARE THEY GIVING ME MIXED MESSAGES??? WHAT AM I SUPPOSED TO PUT IN THIS THING???? I am calling my mechanic this morning for a consultation, and will be losing worktime and all my nerves!!!!

At 44,000 miles, on my 99 Grand Am, my mechanic said my head gaskets and water pump were bad and needed to be replaced. About a year prior he had flushed the radiator as Dex Cool had turned to sludge and said that it was damaging the engine, and that I should not use Dex Cool. He said he had seen cars with less that 8000 miles have problems when they had used dex cool. He replaced it with another coolant.

I have a 1999 Monte Carlo that Has a faulty intake manifold

Purchased a 98 GMC PU new and was told Dex-cool would last 100K before needing replacement. Had to have intake manifold and gasket replaced at 48K, now at 78K water pump is leaking. How much other damage to the engine not yet known.

After reading many posts, believe I'm having problems with two GM trucks related to Dex Cool antifreeze. At barely 100k miles, intake manifold gasket on 97 Jimmy went. The heater core in my 99 Blazer ZR2 began leaking at 82k miles.

I purchased a 2001 pontiac montana oct. 10,2006.While under warrenty,the check engine light came on,and I was told by service dept.that the problem was solved and to take it back if it came on again. Well,it never came on again until 2 weeks ago.Yesterday 1/4/2007 I opened the hood,and found my coolant container empty. I refilled it and wondered where the coolant went.

In 2000 My husband and I bought our first new car, a 2000 Malibu. The car did well except when it reached 80,000 miles, the car started over heating, and we took the car in.

1999 grand prix works just fantastic with 68000 miles.. then last night it quit running... towed and found out i need at least head gaskets if not new head,,, thanks a lot gm for the dex cool.. oh yes i did replace that crap over six months ago... why doesn't gm back this crap??

Problems with intake manifold, car everheating and gaskets problems due to Dex-Cool Coolant

I own a 2003 Rendezvous CXL purchased new on 10/31/02 from the dealership noted above. On 12/22/06 I had the vehicle in for an oil change and was told that the rear head gasket is in need of repair because it was leaking. The quoted repair cost would be $2100. I went home and began to do some reseach on the engine with this problem and soon learned that it is a very widespread one. And that for the most part GM is stating that there is no problem.

I purchased a 2002 Pontiac Grand Am. At under 20,000 miles it overheated - I brought my car to the dealership - they verbally told me it was a hose - the paperwork shows replacement of my upper and lower intake gaskets. Last year it overheated again. I was not under factory warranty anymore but had an extended warranty through my own insurance company GEICO. I brought my car to a private mechanic who told me my lower intake manifold had to be replaced and also that the one on my car was not factory - that is when I learned that the dealership had already tried to fix (and cover up) the problem. The mechanic told me the Dex Cool was not good but he had to put it back in the car because that was what factory called for - and my extended warranty demanded it. One year later (last week) once again - THIRD TIME - my lower intake was leaking - this time they took the Dex Cool out of my car and replaced it with normal green antifreeze - and my extended warranty rep at GEICO - authorized the ok - after they read all the lawsuits and problems associated with Dex Cool. I am so disappointed with GM!! I had not bought an American car since 1980 until this one. After this experience I will most definitely buy a Honda or Toyota next time.

2004 we replaced leaking intake gaskets due to low coolant warning. This on a 2000 Impala @30,000 miles. Now I just replaced radiator and heater core due to overheating. Mechanic said it was plugged due to DEXTROL coolant. This is factory coolant as filled by GM.

I bought my truck in 1999, use it very little, it has 45,000 miles on it. heater started not working correctly,went to have it looked at...was told to dump it as soon as possible, DEX COOl has ruined the engine

i have a 2003 chevy malibu and having all the same problems as every one else leaking anti-freez. the head gaskets are bad so are the intake gaskets and the brakes have to be changed every 2-3 weeks and now iam useing more gas man the malibu is no good!!!

1999 Oldsmobile Silhoutte (General Motors). I have read other complaints and want to join in. 2 head gaskets replaced in 3 years and in between a transmission replaced. Because of DexCool?????

my boyfriend is a michanic and is currently fixing our car's engine due to Dex-Cool damage. Both gaskets have to be replaced as well as several engine parts and engine damage.

Mark Waterville OH (12/17/06)

I have a chevy lunmia 1995 In 1998 the intake gasket leak dex-cool in to the oil pan and cause the engine blow . Had if fix ed @a chevy dealer . in 2000 I had the engine replace with a engine out of a new monte carlo with 32,ooo miles on it .Then in 2003 had to get it fixed again because the gasket started leaking . & now in 2006 it is leaking again I have spend about $4,000 on this problem .

I have a GM 2002 Malibue. I had to change the intake gasket manifold, and it seems to be that the coolant is building sludge in the system that started to clog the radiator and cause the engine temperature to rise above normal.

1999 Pontiac Montana. Has been a great vehicle except for the brakes bein mushy from the beginning. Now 88,000 miles the head gasket leaked and I am looking at a $1,000.00 plus repair. I've heard that the DexCool coolant that GM uses is crap and this is a very common problem. I think they need to pay for this repair.

My heater went out on my 2003 Chevy S-10. I found out I needed my radiator flushed due to the Dex-Cool in my truck. There was a great amount of sluge and gunk in my radiator. When I bought my truck the dealer never told me about the Dex-Cool or how to maintain the up-keep on it. This problem started on my truck at 49,000 miles.

Dexcool. Enough Said. Read Other comments to know what happened to my car. They are all about the same. I am extremely unhappy...

Have a 2001 Oldsmobile Alero with 39,000 miles. Went in to have coolant flushed at dealership, find out that the lower intake minifold is leaking and needs to be repaired.

intake maniflold gasket leak at 46000 miles. replaced and started leaking again shortly after. have been topping off antifreeze since then and am now at 82000 miles but problem is getting worse. i will never buy another gm product again because of this. this should have been a recall item. this is only one of the many problems we have had with this car. a 2000 alero.

I have a 6cyl. 1999 Oldsmobile Alero 2-door that we LOVE. We planned on keeping it forever by putting better parts on it as it grows older & making it faster, stronger, better because it is a great driving machine (at a low cost)that is now discontinued and will be increasingly scarce. Say what you will. We just love it. We have not had any problems except an alternator replacement for over 60,000 miles UNTIL: The coolant light started going on & off 2 years ago so I had the radiator flushed and replaced the thermostat. He removed & flushed the Reserve tank of the brown-sludge build-up at the bottom. Was told that i may need a new sensor (which controls the dash light) at the bottom of the reserve container if it is still acting up.

I use Dex Cool because it's recommended in my car manual and now I'm spending nearly $1,000 to have my gaskets replaced. They are eaten through by the Dex Cool, according to my mechanic. This is a Chevy Venture Van - 2003. I am very disappointed in this product. I will not buy another Chevy.

i have experienced many of the same problems that other owners of GM vehichles have. I own a 2002 Pontiac Grand Am and like the book reccommended, I only used Dex-Cool Anti-freeze. According to several mechanics who have worked on my car over the years, Dex-cool has caused sludge/mud-like substnce to appear in my resovoir tank, rust/corrosion on my radiator cap, a busted intake gasket (which was a costly repair), and eventually, according to my mechanic, a new radiator. Dex-cool is basically corroding my cooling system and costing me money I can not afford to spare when clearly, the right thing would be for GM to pay for all the related repairs. I emailed them and they basically suggested that I take my car to the dealership (another rip off) and that they were standing behind the product Dex-cool.

My vehicile has been leaking coolant for quite some time now. I've take it to the shoop and was told that my upper intake is leaking because of corrosion and there is sludge in the overflow and on the radiator cap along with rust of corrosion.

I purchase a 2002 pontiac gran am on 11/22/02, on 11/24/06 it started overheating,experienced coolant leakage, took it to a machanic.

My 2002 Oldsmobile Alero was leaking Dexcool in April 2006. Intake gaskets were bad. Total repairs cost over $800. Now my 2003 Pontiac Montana is having the same problem. Intake gaskets are bad. It will cost over $600 to fix. After reading similiar complaints and GM knowing about the problem and not doing anything about it, the next car I buy will no be a GM.

My 2000 Buick Century has leaking intake manifold gaskets (common problem with this engines) The dexcool clogeg up my cooling system, butter like residue (also common problem).

Intake gasket failed causing car to overheat and lose coolant. Cost me nearly $1,000 to repair.

I went in for a routine oil change for my 2001 Pontiac Montana, mileage 56,304, and was informed that I had Dexcool eating away at a gasket and allowing coolant to leak in my engine and begin detroying my van's bearings.

At 63,158 miles on 12/28/05 the intake Gasket, thermostat, Oil pump drive o-ring and water pump was replace in my 2000 Chevrolet Venture Warner Brother Edition. The total cost was $1,079.57. My GM vehicle was past its extended warranty and found it odd for the need to have these items replaced at such low mileage. I file a formal complaint to the GM Customer Assistance Center in Detroit, MI. GM did reimburse me for 1/2 the cost. I realized that they did not have to reimburse any amount. During a recent visit to an independent garage was advised that the coolant level was low and that I had Dexcool in my coolant system. I was advised to research this product, which I did and have become concern with further serious problems which may come from the Dexcool product. I was also advised to flush this coolant out and replace with another product. There was no comments by either the dealership or GM what caused the costly repair.

Purchased a 1997 Chevy Venture in 1999 with 32,000 miles. After 50,00 miles, water pump was leaking and had to be replaced. Next a miss developed and cost $400.00 to fix. About two years later an injector failed and cost $700.00 to fix. Now with 108,000 miles the intake gasket is leaking antifreeze into the oil. Most likely the result of Dexcool.

I have a 1998 Pontiac Montana. The engine started overheating, then one day while driving it, it seized. We had it towed to a local shop who diagnosed the problem as coolant (dexcool) had leaked into the engine, heated up, then cracked the heads. I have seen NUMEROUS complaints by people on the web of this very thing happening to them. I called GM customer support, got a BIG run around before speaking to a supervisor who told me that because the van had 150,000 miles on it, they would not be able to compensate me for the repairs which are estimated to run approximately $4000.00 to replace the engine.

I am the original owner of a 2003 Chevy Venture Van. A few months ago I was servicing my van and discovered that the coolant was turning brown. So I went out and purchased the nessesary suplies to service the system. I noticed that my water-pump was leaking at this time also and I replaced that at the same time. After that I found myself refilling the resevour every couple thousand miles. I looked for a leak someware in the coolant system and couldent find any at the time. After my ife calls me on her way to work at 5 in the morning telling me the van is overheating what to do. I tell her to shut the van off and wait for me. Just to find out that it was low again on coolant. I looked again for the problem and some one pointed out that the leak is from a intake gasket and it leaks from there. As he points at the leak I could not find. He sais to me that his 3.4L in his Impala had the same failure and this is a common problem. So I looked into it on the internet. To my suprise I found that this is a big problem and I am in the family now. Thanks GM!!!

Chevy Equinox has has head gasket and a heater core replaced in the last 6 months. Vehicle has ~ 60K miles May be related to DExcool problems ...antifreeze looks brown. Repairs cost over $2000.

Dexcool coolant at it again. I have a 1998 Old Cutlass w/ a 3/1L V-6 that at 60k miles needed a manifold gasket replaced due to the inferior gaskets and the dexcool coolant. another 40k in miles resulted in another intake gakset replacement. I wound up with spun crankshaft bearings and a rebuild, now there is a borken camshaft. Needless to say, there is a new engine in my garage that will be put in, with green coolant, new waterpump, new radiator, new hoses, new heater core. My G/F has a 2002 Grand Am Gt that is just out of warranty and is showing signs of the same problems. Low coolant light flashes on from time to time. It is a lease so GM can have it back and foot the bill for the intake repair cost.

It's the same old same old! My 2000 Alero is now over-heating and I'm looking at some expensive repairs, not to mention being out a car for the repair time. GM has been aware of the Dexcool issue for some time and has refused to make good on their implied warranty. Now I'v got to make the choice of replacing the radiator and intake manifold or waiting to see what happens. At least I've got the coolant out of the system. With 68,000 miles however, I fear I'm too late.

Dexcool coolant destroyed my 96 impala ss cooling system. After 48,000 mi and 700 later I put old fashioned green coolant in and never had any more problems.

I own a 1997 Gran Prix. I read on your site about the numerous complaints and class action suits against General Motors because of the problems with Dexcool antifreeze.The product is defective and because of it I've had numerous problems over the years with my car's engine and radiator. The repairs have been quite costly.

Purchased 2002 Malibu brand new in February of 2002. Car now has almost 80,000 miles on it, mostly freeway miles. However, a little over a year ago, the radiator light came on and I saw that the coolant was way down. I replaced the coolant with Dexcool after having my radiator flushed. Still, the light comes on regularly every three months or so and I have to replace the coolant which is obviously leaking from the radiator.

Radiator needed to be replaced after only 63.000 miles. Brown sludge build up also rusted out the core of the radiator.

Engine begin leaking coolant. Went to auto parts store to see if they could help. Man at auto store said GM motors are notorious for leaking from intake manifold, you need to take it to a mechanic. Took it to my mechanic and he said Oh yes, we get 2 or 3 a month in here. GM motors blow manifold gaskets and its because GM switched to plastic gaskets that wont hold up to Dexcool antifreeze. I'll put the paper gasket on it and you will never have a problem. This common complaint got me to checking on the internet and here I am.

Intake manifold gasket disintergrated. on buick century 200l after 68,000 mi. must have started earlier but not noticed, will cost much to repair over 1200 dollars. always Took car to dealer for regular scheduled maintenance, dealer where car was purchased.

Purchased a 2002 Pontiac Grand Prix used in Feb. of 2006, it is now Oct. of 2006. My low coolant light came on a month ago and it has been a costly nightmare since. I had to put the car in the shop for over a week and have the engine tore down to replace both the upper and lower manifold gaskets, have the radiator flushed, changed hoses and valves, was without a car for a week and the service engine still is on!!!! All due to this Dex-Cool antifreeze product. There are still problems caused by this product, the repairs thus far have been quite costly and I am still paying for parts trying to fix the car.

I have a 1999 Malibu LS with the 3.1L engine. I had my lower intake manifold gaskets replaced by a dealership at 64000 miles. Shortly after that I had to have my water pump replaced My car has 87000 miles and I found the manifold gasket is leaking again. This time I took the time and Replaced it myself due to the $900 repair cost if I had the dealership do it. I have no doubt that alot of this problem is due to Dexcool eating my gaskets. Not only that, This is my 3rd round of Dexool in this car and I have a clogged radiator too. This coolant is very bad for the car and I have drained and flushed as much as possible and replaced it with the Green antifreese. Lets see if this will be any better.

I purchased a 1996 GMC Jimmy when it had 48,000 miles on it. Little did I know about Dex-cool at that time. It now has 118,000 miles. I have had very few other problems with my vehicle except for one thing!! DEXCOOL!!! I've had the heat pump replaced, hoses replaced, more than one thermostat replaced, recently a new water pump and numbers of flushes of this Mississippi Mud. I have been told by my mechanic to flush it out and put green in. So I got on the phone and called at least 25 different service people, some radiator specialists and most GMC or Chevy service people from the local dealerships and many suggested to flush, flush, flush and put either green or what would be 'global' type anti-freeze in. My concern was there would be no way to totally rid the system of all glicky particles of sludge and rust and did not want to gamble, so recently had a flush and the new water pump etc., costing way too much on a singles income, and put the darned stuff in again. Am now told I will need to flush in at least 6 months and am looking at a new radiator installation because I'm told there are areas that don't work due to the rust & mud in it. I just pray I make it that long. I wish everyone could have heard the responses I received from all the mechanics and service people that have dealt with about this product and the look on the faces of others that have dealt with this mud.

I have a 1998 Firebird with under 37,000 miles, stopped on the highway (at night) by the Dex-Cool (DeathCool) sludge. Radiator gummed up and would only take one gallon of water. Water pump was leaking.

I have a 98 Chevy Blazer that had the coolant DexCool in it and as most stories go the coolant became corroded. I had the engine flushed and was told not to be surprised if the engine developed a gasket leak. 6 months later leak it did, spun a bearing and had to replace motor. 10 months later after puting in a 45,000 mile salvage motor, replacing the water pump at time of install and new radiator it happened again. I had the vehicle 18 months and I am on m,y 3rd motor. The really bad part of all of this is on Monday Oct. 9, 2006, I discovered the peanut butter like substance in my 2004 Impala that has approx. 43,000 miles on it. We know whats next.

on 10/6/06 i had to replace my head gasket, radiator, and water pump due to the sludge from the dex-cool fluid. this is on a 98 chevy blazer i bought in 2000.

Had to have the engine pulled on our 1999 Olds Sil. van to have the intake manifold gasket replaced because of the Dexcool being used in our van.

I have a 1996 Chevy Lumina that has been a great car with few repairs other than having the intake manifold replaced 2 years ago. However, I was just told the head gasket has now failed. The shop I took it to indicated they were seeing gasket failures from the new coolant.

Took car to have tires rotated & balanced. Belle Tire mechanic called to say they noticed the coolant was low. THEY told me that this was common with my 2001 Grand Am Gt- and it would cost about $800 to fix. This was a year a half ago. Now I am putting coolant in the car every other week. If this a problem and obviously GM knows about this-what recourse do I have right now without a class action suit?

I bought my 2000 Grand Am GT brand new and haven't had many problems with it, until lately. I had my coolant flushed around 60-70k miles after my low coolant light started coming on. About 10-15k miles later the low coolant light comes on again and stays on all the time. I took it to get looked at, and had the water pump, radiator, and eventually the head gaskets replaced at under 90k miles. GM knows that they shouldn't use plastic manifolds, yet they do exactly that anyway. My car also came with Dex-Cool, which I will NEVER use again. GM should really think again when skimping on important parts that end up costing their customers thousands and thousands of dollars.

I have sludge in my coolant due to a intake manifold gasket. Caused by dexcool, the coolant that GM demands be used. So far it's just the gasket. I will see if further damaged was caused

I have had 2 intake gaskets replaced on my 1997 POntiac Grand Am and also my fuel pump replaced within only the last 2 years. The gaskets cost me close to 1000 dollars and they told me there is no guarantee it won't happen again. I just recently saw about the Dexcool problems and that is what I have been using im my vehicle since that is the kind that is required from the auto makers.

I purchased a 1997 Chev Venture Van when it had 200 miles on it and drove it for 7 years. It was a good car so I gave it to my Mother since she was without a car. She has driven the Van for about a year and it has recently started overheating. She took the car to a shop and they told her that she needed to have a some engine gasket replaced and it was all due to DEXCOOL a coolant that GM used in its factor cars.

Dexcool product in vehicles coolant systems deteorates alumiun parts in engine. Intake Manifold, Cylinder Heads and Timing Chain Cover are all made out of alumium. My vehicle needs all these parts replaced. The motor has coolant in the oil and oil in coolant. This is the second time this problem has occured. The first time I replaced it at my expence this time I want General Motors to Step Up, Do The Right Thing and repair this vehice at their expence. General Motors Customer Service has records of my complants about this vehicle. So far nothing has been done. I have had this motor repaired at a cost of about $ 1,000.00 the first time. This repair is going to cost about $ 3,000.00 because all alumium parts have to be replaced.

Took my 2002 Buick Century in for a maintenance check and was told the DexCool antifreeze needed to be flushed and refilled. The owner's manual states it is good for 100,000 miles; whereas, my car has only 48,000 miles. The DexCool had corroded. Mechanic also advised that the PLASTIC manifold would need to be replaced since the DexCool had literally ate through it.

Intake manifold leak on 2000 Chevy Venture at 81000 miles. With all the news I have read in the past few days concerning dexcool, I will probably never buy a GM product again. $700 in repairs.

I purchased a 2000 Oldsmobile new. At about 60,000 miles, it overheated. When I took it to a mechanic, I was told I needed a new water pump and that a head had cracked. About 2 months later, it was overheating again. This time I was told it was the thermostat so I had it fixed again. Two weeks later I went to have the oil changed. I was told that the radiator was all gunked up and with the type of coolant required (Dexcool), it would continue to be a problem. Now, six months later, my car is back in the shop having the radiator rodded out.

My truck is constantly needing flushed because of the anti freeze General Motors uses, Dexcool. It over heats and the heater doesn't work because of all the sludge. It constantly has that sludge all clogged up it it everywhere. I don't understand why there hasn't been a recall on this as you have tons of complaints for this.

2000 Chevy Warner Bros Edition, Fully Loaded 52,000 miles. Vehicle in for inspection put $600 in tires to pass, told by my mechanic that head gasket cracked losing antifreeze, I use Dexcool per GM. My mechanic told me that this is becomming more common problem in these vehicles from GM. Told same thing by 3 other mechanics locally as well.

DexCool issues with a 99 Grand Am Gt at 60,000 miles. Overheating, losing antifreeze, sludge in antifreeze. I had to replace lower intake gasket, waterpump, thermostat & flushed the dexcool out of the car.