The vehicles' tires were cured for too long during production.
Over cured tires may develop a break in the sidewall resulting in sudden air loss or a belt edge separation which could lead to a tread/belt loss.
Either condition can cause a loss of vehicle control, increasing the risk of a crash.
What to do
Dealers will inspect and replace the tires -- as necessary -- free of charge.
Owner notification letters are expected to be mailed July 19, 2021.
Owners may contact Chevrolet customer service at (800) 222-1020 and GMC customer service at (800) 462-8782. GM's number for this recall is N212336230.