GMC Sierra Reviews

2 1/2 years into my new Sierra truck lease and the engine died and would not start with no warning indicators. This happened while I was on vacation in another state. Long story short...The truck is not fixed 100%, still no warning lights so the mechanics "can't find anything wrong". The rental car I had to get to try and finish my vacation hasn't even been reimbursed by GM (6 weeks now). Seems GM doesn't care about the quality of their products or the customers that buy them.

I bought a $90,000 GMC Sierra from Banks Chevrolet. The emissions warning light started coming on at 5,000 miles, well inside warranty. I opened cases with GM. I scheduled appointments at two dealers. Every single time, the same wall: GM’s own policy says the dealer can only diagnose if the truck arrives with the light on, but appointments were booked weeks out and the light resets on its own before you get there. So the dealer sends you home undiagnosed. Repeat that cycle for 70,000 miles. I finally beat it by waiting for the light, driving straight to Holloway GMC, and forcing them to read and print the code on the spot. Days later they pulled it from the ECM and confirmed the exact issue I had been reporting since 5,000 miles.

I’m leaving a 1 star review because I couldn’t no reviews. I’ve been a GM customer for 20+ years and never had a problem with the vehicles until this buy. I bought a brand new 2021 Sierra which the paint started to peel right after the 36,000 miles. The truck has been garage kept with presently 39,000 miles. I took it to the dealership and they said nothing could be done due to being past the manufacturer warranty. I told them it’s been garage kept to see the miles I only drive it on the weekends it’s a manufacturers defect. They said sorry it’s been past the warranty. Nevertheless I contacted GM and told them the situation and they told me they would look into it. They did they told me to take it to the body shop for a repair estimate. They quoted 3,600.

I have tried to contact GMC to help settle a problem with the dealership over repairs over the last 30 days. You have to respond. They seem to hide from all contact.

Two weeks ago marks the Third engine failure in 2021 GMC Sierras we own. They are well maintained. We have lost two engines 5.3 liter. One with 40,000 miles, one with 138,000 +/- a few hundred. Now a 6.2 liter, 2019, with 128,000 +/- a few hundred miles. The 40,000 mile was in warranty. The 138,000 mile engine was provided a $3500.00 Certificate for discount on a new truck. The 2019 model, nothing. The point is GM could assist repairs but it must be in their garage where you get ROBBED with cost of a rebuild! I would NOT BUY a GM Vehicle again! They know there is a problem with engine failures so SCREW THE CUSTOMER!

There’s nothing ultimate about this truck except it’s a Duramax. $105,000 will get you a truck that is a downgrade from previous 2023 and older models. The 2023 and newer with the new infotainment system have the worst sounding factory audio I’ve ever heard in my life. It is absolutely horrendous.. It’s embarrassing that GMC would go this far backwards when compared to older models.

I purchased a 5.3 2010 GMC Sierra 1500 and after 125k miles, the engine blew. Now I have a 2019 5.3 Sierra X31 with 79K miles and the engine blew up and the dealership, plus other customers, have blasted GMC on their response, knowing full well the lifters in these trucks are crappy. 10K for a new engine and no guarantee it will last. You guys should fix this problem because you know full well it’s a defective engine. Never again will I buy another GMC!

Been waiting 3 weeks for my now second DEF tank on my 2024 Sierra at4 with 3.0 diesel. No word when one will be shipped. I bought a new vehicle so that I could have something reliable. The only answer that I get is that there is a part shortage. There are 7 vehicles waiting at my dealership for the same issue.

The old entertainment center acted this way for a year, before it froze and was replaced. Dealer told me that the over-the-air updates are only for the radio. The Nav and computer updates require onsite updates at the dealer, although none have fixed the intermittent freezes or failure of the Nav cues to show on the HUD.

I traded in my 2018 GMC Sierra, for a 2026 Sierra. The vehicle had less 94 miles on it at the time of purchase, not even two weeks later the backup camera failed. I was told the part needed to be replaced, it was in stock and they were able to get it (this happened on a Monday). The problem being I live remotely on an island with no GM dealership. I had a ferry ticket to go back home, Friday the same week my camera failed but was told that the part would arrive in two days. The part did not arrive until Friday, I missed my ferry. I have to spend money on a hotel and food for a week to wait for the next ferry. I will be missing work for the week and will lose out on pay. Another expense, pay for gas for the week unless I park and just walk everywhere for a week.

I bought a used beautiful 2019 GMC Sierra 1500 Elevation with 21K miles about 2 years ago. Unfortunately, I didn't notice the transmission kick in engine cold temperature, look it up and yes, they have a sensor temperature problem. Now I have lifters and camshaft at 58K miles. A problem that AFM system causes, just for GM parts $2,500 plus labor, I don't think I will ever own a GMC again, already have too many major problems.

Bought a brand new 2024 3500 Denali, the truck has been breaking down every 3 months since. The most recent breakdowns were in Texas and Colorado. Truck broke down in the Dallas area, transmission completely failed, could not get to Vegas with my haul. Went to 5 dealerships in the area, some were closed on Saturday, some were open with one guy behind the service desk doing nothing. I was told that no technicians were on site and that they will re open only Tuesday. No dealership was able to provide me a courtesy vehicle as well. I still haven got any refund and compensation for that major break down (travel expenses, heavy truck rentals…).

GM EV Concierge Ignored Me After Major Battery Failure – Worst Customer Service I’ve Ever Experienced. Post: I’ve been a loyal GM customer for 20+ years. The way I’ve been treated over the past 2 months has destroyed any trust I had left in this brand. My 2024 GMC Sierra EV Denali suffered a total battery failure at just 3,995 miles. I opened case #** on 5/27/25. Since then, I’ve been lied to, ignored, and strung along by the EV Concierge team.

I have a '21 GMC 1500 Sierra Denali Carbon Pro edition with the baby diesel.. About two months ago my factory 22-in wheel broke in half driving down the road 70 miles an hour, let’s not focus on how dangerous and deadly that could’ve been, I’ve had seven mechanics. Tell me this wheel should be on a recall list that they have never ever in their careers have seen a wheel break the way my wheel has broke. Eight weeks we have been fighting with GM to stand behind their product and all we are getting out of them is that is normal wear and tear.. Ummm excuse me. I’d like to know how I will break it in half is normal. Wear and tear on a four-year-old pick up. All GM is doing is running their name into the ground.

I was a die hard GMC customer 4 weeks ago! Now, I will never purchase another General Motors product in my life!!!! Recently, I discovered that General Motors won’t even back their own products, so how can I have any faith in them??? As a life long supporter of General Motors, I STRONGLY ADVISE you to buy anything other than a General Motors product!! I have a 2021 GMC Sierra 1500 AT4 with a 3.0 Duramax. I have had problems since the first month I bought the truck! They started out small, sensors and emissions, but recently, turned into a $13,300 engine replacement! Truck is only 3 yrs and 11 months old and needs a full diesel engine replacement??

I bought a brand new Sierra AT4 at 11 am Saturday. Drove it off the lot with 4 miles on the odometer. Drove it home approximately 5 miles and parked it in the driveway. Changed my clothes to go to the gym and when I went out to start the truck it wouldn’t start. It would crank and crank but never start. Tried it about 8 times and then gave up. I pushed the OnStar button and arranged for a tow back to the dealer. Needless to say I canceled my financing and took back my trusty F150 that I traded in. I will never again leave Ford for a subpar vehicle like the GMC.

I have owned 7 GMC trucks, my last one is a Denali and although mechanically it's good, most of the trim and luxury items are cheap and cheaply made. Center console handle cut my fingers when the metal plating used started peeling off. Gas intake hose was missing a screw and GM said I needed to replace the whole intake system - that took 2 years to finally get repaired.

I have a GMC Sierra 1500 2022 that has 18,000 miles on it and is meticulously kept. One month ago I left my house and it died in the middle of the road about 200 feet from my home. They towed it to our local GMC dealer and it has been there for one month waiting on a fuel pump. They are apparently on backorder because of the massive problem with fuel pumps. One month is a long time to be without a vehicle. My mother also recently purchased a used GMC Arcadia with 8000 miles on it and it died the day after she got it and it was the fuel pump. As soon as I get my truck back from the dealer, I will be looking for another vehicle and I will never buy a GMC again. We have not received a phone call, not an update, not an apology, as a matter fact the woman at our local dealership was rude to my husband when he asked why it was taking so long. Terrible reliability, terrible customer service. GMC never again.

Don't waste your money on AT4 Sierra duramax. l spend 60 thousands dollars on one the truck with only 17.000 miles has oil leaking, the shocks are bad. Need to be replace and GMC don't want to get it repair. Don't buy anything from gmc and their customer support are horrible.

We bought a GMC Sierra and the vehicle quit on us two times and the third time it quit it was in our driveway and a service Truck from Bull Motors where we bought the vehicle came a loaded the vehicle and to it to Wynne Arkansas and it has been there for over two weeks. Some lady named Laka from GM called me today and told me she would be waiting for 14 days to see why the fuel pump has been on back order. I went online and found the pump myself. I told the lady from GM that I found the pump online and because it is taking this long for them to get the pump I probably won't be buying GM anymore and if they do not get the pump ASAP after it has been up in Bull motors for two weeks, they have just about lost a customer in the future.

I'll start right from the beginning. First issue was with the truck lurching when putting it into Drive. Took it to the Welland Dealership and no issues found. 2nd Issue. Three times I had to take the truck in to get the radio replaced, the screen kept going black. On the third trip back to the dealership they finally replaced the Radio. 3rd Issue. Right side bank needed new lifters, Replaced them. 4th issue. Left side bank needed new lifters. 5th Issue. I've taken the truck back for service engine light flashing, nothing was done. 6th Issue. The truck is back in the Welland Ontario Dealership getting another set of lifters done on the right bank of the engine. Keep in mind this is a 2021 GMC Sierra Truck. Where is the Quality????

We held off on writing this review because we didn’t want it to be colored by wild emotions. But we are both feeling so taken advantage of that I think it’s time to share our experience. After spending a long 12-hour day driving from New York to Ohio we noticed a problem with our GMC Sierra truck and knew that it was something that needed to be handled by a professional. With a quick google search we found Perrysburg Automall and called to see if we could get an appointment and he (John E.) said “come on in”.

I went in for high mileage services and oil pan gasket replacement. Upon arrival inquired if a veterans discount was offered. I was told that USAF doesn't count. Also I requested the oil pan gasket be replaced. It was leaking. I not only was disrespected for my military service but I was charged for a oil diagnostic and 2 oil changes. The transmission filters weren't mentioned or replaced with the "transmission service" and they were stock, so my truck is a 2015, 8 years old on those filters should be addressed.

I bought a new 2017 GMC Sierra. I noticed some irregularities with the transmission at times while driving. Specifically the truck would plunge forward while braking on a hill. The plunge was significant and I took the truck in a few times to the dealership. They claimed that they needed to reset the computer and the problem should work itself after driving. Unfortunately, the problem persisted and now I was told I needed a new transmission. But since the warranty had expired passed 67,000 miles I was responsible for the entire cost of replacement. I later found out that other Sierra owners experienced the same issues. I have bought 4 GMC vehicles but will never buy another GMC product again.

Between the transmission vibrating and shifting hard to a point where starting to drive slams into gear and is dangerous in a way that may launch you and your vehicle into danger. To the trained mechanics saying, "I see no problem", to the power running boards not working on either side after being fixed twice, to the phone app not working correctly or the half dozen sensors going off and setting off the alarm and killing the battery completely dead, to where a tow truck has trouble jump-starting it. Just poor quality either from the union workers with no pride or skill to the company trying to pinch a penny for their own pockets. I will never buy another GM product again.

I traded in a 2015. That Sierra had wonderful front bucket seats and the back seats weren't too bad. But the 2020 truck has the hardest back seat and the bucket seats are medium hard. I sometimes drive 6 hours in a day and I'm so painful when I finished.

I was on the phone for over an hour checking the order status of my new truck. All I got for a hour was representatives assisting other customers. Your call is very important to us. Yes The worst customer service I’ve ever experienced. I’m canceling my order.

I own a 2014 GMC Sierra piece of garbage. 19 recalls +! on this vehicle. (Check out NHTSA. Probably more by now.) They stopped servicing my recalls at 70,000 miles. Great. Could be safety issues that they refused to address due to having so many recalls on one vehicle. Then my transmission fell apart at 150,000 miles. That was $5500. And now my rocker panels have rusted through and need to be replaced.... $4400... for a 7 year old vehicle!! My neighbor's 1974 Ford pickup has perfect rockers and it sits outside all year every year. I will never buy another GM product.. and my father worked at GM for 43 years. What pathetic engineering to have such a defective vehicle. I have had Jeeps that were 15 years old that never had one issue, other than replacing brakes and tires. My next truck will be a RAM. Yours should be too, or a Toyota, or a Ford, or anything other than a GMC....

Horrible experience with a very expensive truck. 3 failure for same crap... trying to get GMC to replace the truck. Never in my life have I owned a more problematic auto. Stay away from GMC! They are producing unreliable vehicles that takes months of downtime. I have stage 4 cancer and this is the last stress I need!!!

My 2021 GMC Sierra Denali 1500 had to have new lifters ordered at 5000 miles. I had a complete engine failure on a brand new vehicle purchased in February 2021. I’m now waiting on the dealership to get back with me on the status and estimated completion because they can’t give me a loaner and they have no idea when I’ll get the vehicle back.

Bought a new truck. Parked it in driveway. Truck engine caught fire and destroyed truck. GMC 2021 Sierra. Dangerous truck. It can explode in fire ball without notice. GM does not care. A few minutes earlier and I would not be here to write review. GM CEO does not care.

I leased Denali Sierra 1500 and it started vibrating on the road at 60 mph. What I learned these vehicles and the Silverado have this defect. You can Google or YouTube it. It's a nightmare when it happens. GM can't fix it & the dealer makes you pay for all these procedures & new tires to no end. I had to take McGuire GMC to court. If this happens you can take them to small claims. It only costs $70 to file, you don't need a lawyer if you're claiming up to $15,000. I'll never buy a GM truck again.

I purchased a GMC Sierra. I purchased a GMC Sierra. 2013 SLE, one owner with 80,000 miles. I've had this truck for little over a year. Regularly scheduled oil changes and have even had a tune-up done. One day last week I was driving the truck and the engine begin to tick. I took the truck to my local mechanic where he said what everyone else has said, the motor is junk. I have a lifter ticking as well as a rod broken. The engine is toast and GM is telling me that I have to move a vehicle that is not drivable to a GM dealer, unbelievable. GM customer service immediately asks for the VIN number so that they can look and immediately remove all fault from GM and place the blame on the customer. They will immediately tell the customer that its an out of pocket expense.

I recently passed 50,000 miles on my pickup. It is just out of warranty. The air conditioner condenser went out and when they were fixing that they showed me the radiator that is leaking and has to be replaced. I have religiously maintained this truck at the dealer, most of the miles are freeway miles and I have towed things about 6 times in the life of the truck (mostly just a two horse trailer with one horse in it). I have owned many trucks over the years and have never had problems at 50,000 miles before. I was told by the dealer that these things can fail at any time. If that's true I sure am not going to buy another.

My 2019 Sierra has been at the dealer for 9 weeks. They disassemble the front differential and does not have parts. As of this date GM cannot tell when the parts will be available. Life long gm owner, but stay away. You have been warned.

I bought a 2019 GMC Sierra Denali 1500 on October 31 and only drove it until December 11 and then got a check engine light and I took it back to the dealer and they said that it was a battery problem so we change the battery and then not even 30 minutes later we took it back because there was no brakes and all the lights came on on the dash. Until this day the truck is still in the dealer and I’m making payments while it's still the dealer. I was headed to Wisconsin when this incident happened and I had to turn around and cancel my vacation because of this. I don’t think this is right because it is a 2019 vehicle and I only got 1500 miles on it. I don’t think a 2019 vehicle should be doing this.

I like my GMC Sierra pickup truck. There have been a number of recalls on it but the dealership takes care of them. Even with it being 5 years old with almost 100k miles it still looks and drives great, and is very comfortable for long trips. Other than the recalls and a defective condenser on the air conditioning system I haven't had any repair issues yet.

I bought a 2019 fully loaded Sierra Denali 1500 for $72,000. I have had it since May 2019. My dealer is amazing and have tried to resolve my issues. I have a number of issues happening.

I have had 2 Sierras and would not take anything for them. If it was not for the first one my wife and I probably would not be here. We were in an accident because of a guy running from the police and ran a red light, hit another truck that hit us head on. The accident killed the driver that he hit. My truck was a 2013 and was totaled. I also like the way that the truck handles and rides.

Before you buy any GM car or truck, Google "Chevy shake." After about 16 months of owning a brand new GMC Sierra, there was a shake/shutter/vibration throughout the cabin. This is happening on several models, not just mine. GM is not acknowledging the problem, or just covering it up by saying it falls into their standard or specifications. GARBAGE! Do not buy ANYTHING from them without doing your research. I will be posting their emails that they responded with stating that this is their "standard" for $40,000+vehicles.