general problems of the 2012 GMC Sierra 1500

P0521 has been addressed/replaced almost nine (9) times. “low oil pressure-stop engine” is another one that is not completely functional. The truck is using oil but we cant find evidence of leakage. Services performed at dealership or certified shop. Troubleshooting was performed, im told. I cant vouch for the quality of the workmanship. This should not be an issue at this mileage 100,100 ohe hundred thousand miles and oil components going bad is not good. GMC has sold me a truck that needs a new engine component. Please help. Thanks j.

Lags when accelerating. Does not happen every time. Causes safety issues when in heavy traffic. The below date is when it started. It happens very regularly.

My passenger air bag deployed or went off as I was driving home from work and made such a loud noise that I crashed my 2012 GMC Sierra 1500. I was startled and scared and disoriented and others around me that I crashed my truck. It has not been reproduced or confirmed by a dealer. It has not been inspected by anyone. There was was no warning or lights or anything it just went off as I was driving.

My engine has a tick,,brought it to a shop he told me lifters and its expensive. . . Went to dealer,,, told me I need lifters 2600. 00 to fix it and apparently my lifter isn't getting oil in it , "from active fuel management" with I have read all over internet that its a huge problem and people have to pay to fix,,,but wont fix the issue do to the fact the afm cuts the cylinders off causing the lifter to not get the oil.

Tl the contact owns a 2012 GMC Sierra 1500. The contact stated that while driving at an unknown speed, the rpm increased while attempting to depress the brake pedal. The contact stated that the brake pedal was firm. The gear shifter was shifted to neutral to slow the vehicle. The contact pulled over to the side of the roadway, turned off and restarted the vehicle and the vehicle operated as intended. The contact stated that several warning lights were illuminated. The contact stated that on several occasions while driving at various speeds, front and rear brakes independently activated. Additionally, the door latches locked and unlocked independently. The vehicle was taken to payne Chevrolet Buick GMC (2229 e expressway 83, weslaco, TX 78599), where the vehicle was diagnosed and the contact was informed that the abs speed sensor needed to be replaced. The vehicle was repaired. The manufacturer was not made aware of the failure. The failure mileage was 141,000.

The contact owns a 2012 GMC Sierra 1500. While driving approximately 50 mph, the vehicle hesitated. The contact drove the vehicle to the dealer thinking that it needed a tune up. The dealer diagnosed that the camshaft and uplifters needed replacement. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 140,000.