2019 GMC SIERRA 1500 Complaints

Transmission is slipping into neutral from a slow start and re-engaging with a hard bang to the point it feels like I’ve been rear ended from a vehicle behind me. It’s done it twice in two weeks and it seems to happen when I’m leaving from a stop or slowing down and then come back into the accelerator.

I were driving at low speed and all 4 wheels locked causing the vehicle to suddenly stop without notice. I almost got rear ended. I had to put vehicle in park and turn off and turn back on to get it to move. Again it did the same thing stoping with brakes locking suddenly, almost causing an accident in middle of road. There was no warning at all.

Driver's side front wheel assembly separated from the vehicle. It was hard to tell exactl what happened but I am told that it may have been a ball joint failure. I was driving in the middle lane on the highway with cruise control set to 70MPH. All of a sudden, my truck jumped up and my truck starting pushing towards the left median. I thought I had a tire blow out. Luckily there wasn't anyone in the left lane at the time and I was able to get to the grassy left median. If there was another vehicle in the left lane and or if the left median wasn't grass, this would have caused a major accident as I has no control over where the truck was going. When I got out I saw that my entire wheel had separated from the vehicle and it was on its face under the truck. I did not hit a pothole. There was no prior indication that anything was wrong with the assembly. A tow truck was called and brought the truck back to their shop. The assembly had to be replaced, (ball joint, axel, steering control arms etc.). I called my local GMC dealer and they have nothing being reported of this issue but when I looked online I've seen multiple reports of premature failures of ball joints. Total repairs so far have been $3,400.00 and I still need to replace a cracked rim. Repairs will be over $4,000 when all said and done.

According to inspection by my local GMC dealership, the engine oil cooler lines leaked/detached, as a result the engine assembly needs to be completely redone. When driving on the highway the car began flashing to immediately pull over and turn the vehicle off, the engine became very hot and was smoking and oil was found all over the ground upon inspection after immediately stopping the vehicle. This vehicle has been inspected by the Carlsbad GMC/Buick Dealership. There were no warning messages prior to this event. The car has consistently received all recommended preventative maintenance and oil changes. As a consumer I am now on the hook for over $15,000 in repairs, after complying with all maintenance recommendations from the manufacturer. There is an active recall for an identical model and make as this car for the same issue, the recall number is: N212326940 (customer satisfaction program number) and DCS5833 (Global safety field investigations number). I am very confused as to why this recall has not been applied to my vehicle.

Was driving around 70 MPH brakes started engaging and disengaging truck felt like engine was missing, brake light luminated and stated to stop vehicle ABS light luminated as I got to the emergency lane I had no brakes pedal went to floor and I came to a stop after coasting and pressing pedal. Once stopped trailer towing light luminated ( I was not towing anything). I exited truck and it was apparent this was a issue with the front brakes as they were smoking. Rotors appear to have marks in them when compared to rear. After about 30 minutes I started truck and there was no indication on dash of a problem had brake pedal. The truck has 50800 miles on it. Contacted dealer (Hendricks Chevy) this morning they said it was not covered and no recalls I discussed brake issues I read on line again they repeated no recalls in system for my truck, but would be glad to look at it in 2 weeks.

At 50,000 miles the upper control arm/ball joint on the driver side came apart with no warning causing considerable damage to the suspension, tires, wheel, and front bumper. About two months before at approximately 48,000 miles the passenger side control arm/ball joint came apart again with no warning. Warranty has just elapse and GM has denied any responsibility and will not cover any of the repairs. This could have easily been catastrophic if we would have been on the freeway. This is a Safety issue! This truck has the aluminum upper control arms which my opinion for what its worth is the problem. I have no clue at this time how we are going to be able to fix this. Even when it is fixed we will never trust it.

The contact owns a 2019 GMC Sierra 1500. The contact stated while driving 10 MPH, the low oil pressure warning light illuminated. The contact stated that he parked the vehicle and became aware that oil was leaking underneath the vehicle. The vehicle was not drivable. The contact towed the vehicle to the local dealer, where it was diagnosed with needing the engine oil cooler line to be replaced. The vehicle was not repaired. Upon investigation, the contact associated the failure with Customer Satisfaction Program Number: N212326940 (Engine Oil Cooler Lines Detaching from Crimp); however, the VIN was not included. The manufacturer had been informed of the failure. The failure mileage was approximately 82,000.

Alarm codes P25A2 & C05B0 -Brake system failure 43mph top speed -Service trailer brake system -Service brake assist -Service ESC -Check engine light -Traction control light My vehicle is not showing any recall, but obviously I’m not the only one with this issue. A quick research on google revealed several people with the same issue. I’m having to pay for this out of pocket for an obvious issue with GMC & Chevy trucks.

Engine had catastrophic failure while driving down highway with no warning. No check engine light. Loud bang and loud metal on metal slapping with violent shaking of front end of truck. Towed to dealer. So far they say lifter failed, and push rod collapsed and drove through engine block. 40000miles, 2019 Sierra 1500 Denali with 6.2l V8.

I have faulty lifters and it has been inspected by a GM dealer. I believe this issue should have a service bullentin to have it fixed. They have others for faulty valve lifters in the same model truck that I have.