37 problems related to service brakes have been reported for the 2020 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2020 GMC Sierra 1500 based on all problems reported for the 2020 Sierra 1500.
Dear NHTSA, I am filing a complaint against general motors, llc (gm) for failing to follow through on a legally binding lemon law settlement and leaving me with an inoperable, unsafe vehicle. Vehicle information: •vehicle: 2020 GMC Sierra 1500 •VIN: 3gt1p8bed4lg424389 •date of purchase: October 1, 2020 •dealership: diamond Chevrolet Buick GMC nature of the complaint: 1. Vehicle declared a lemon: •gm acknowledged that my vehicle was defective and offered a ccp § 998 settlement on April 18, 2024, for $97,000 plus pre-judgment interest. •despite accepting the offer, gm has failed to facilitate the buyback or repurchase of the vehicle. 2. Ongoing safety hazard: •the vehicle is non-operational and poses a safety hazard due to repeated transmission failures, loss of engine power, steering/braking issues, and limp mode activation. •gm’s delay in replacing the vehicle leaves me exposed to ongoing safety concerns. Request for action: I request that the NHTSA: •investigate gm’s failure to address and rectify the vehicle’s safety issues. •document gm’s negligence in resolving safety defects under a recognized lemon law claim. •initiate necessary action to protect consumers from ongoing safety hazards caused by gm’s failure to act. Please contact me for additional information or supporting documentation.
Everything was fine for about 6 months after having purchased vehicle as new. Then I got warning lights asking me to both service the parking break and service esc with a warning that driving would be compromised just over 60mph. I notified dealer who says they fixed the glitch but it happened again. The last time, most recently, I tried to start the truck the next day and all the warning lights came on. This was followed by a complete shut down. No engine, no lights - not even lock/unlock with key fob. It had to be towed. This is a 2020 vehicle and seems like it will strand me some place at the very least. Awful, expensive, and perhaps deadly dynamics here. GMC, get your act together. You owe us immediately. Provide the fix immediately or give me money back with no contest.