2020 GMC Canyon problems

“The main issue is the transmission... It shudders. Now I have to change the oil every 10K miles on it, or it will start shuddering again. It first started when the truck had 50K or a little more miles in it. The issue was resolved, I thought... Then it did it again at 69K (Just out of the warranty). I called the dealership and they stated I had to pay if I wanted an oil change, and they could not do an oil flush even if I paid for it. So I said OK, I will take it to a mechanic, and I did and "fixed" the problem. I used the oil GM recommended and the shuddering stopped. BUT then, another 10K miles and it starts again. I have changed the oil a lot of times... It now has 128K miles in it, and this last time, I had to change the oil at 9k miles because of the shuddering... What will be next? I will have to change it at 5K miles, just like the motor oil? It is sad to see all these people having the same issue as I do, and GM does not do anything about it. I've done a lot of research... There is a guy that fixes the issue eliminating a specific valve, in the transmission, and updating the other ones with higher quality valves they make to fix the problem. I'm sure it…”

“The contact owns a 2020 GMC Canyon. The contact stated upon depressing the brake pedal and turning the key in the ignition switch to turn off the vehicle, the key failed to turn to the OFF position and remained stuck. There was no warning light illuminated. The contact stated that upon turning the key back to the ON position and moving the gear shifter several times, the contact was able to turn off the vehicle successfully. The contact stated that the failure had been recurring, and on several occasions, the key could not be released and was left in the ignition switch. The dealer and the manufacturer were not notified of the failure. The vehicle was not diagnosed or repaired. The failure mileage was approximately 23,000.”

“See attached document for complaint”

“The contact owns a 2020 GMC Canyon. While driving 65 MPH, the check engine warning light illuminated. The vehicle was taken to the dealer and DTC: P0024 was retrieved. The dealer determined that the camshaft solenoid bank #2 needed to be replaced. The contact associated the failure with Special Coverage: N232430470 (Camshaft Position Actuator Valve Solenoid - Bank 2 (Left Side) Exhaust); however, the vehicle was not covered under the program. The manufacturer was notified of the failure by phone and suggested that the contact report the issue to the NHTSA Hotline. The failure mileage was approximately 57,800.”

“The contact owns a 2020 GMC Canyon. The contact stated that while her son was attempting to park the vehicle in a parking garage, there was a loud screeching sound coming from the vehicle while depressing the brake pedal. The contact's son used excessive force to depress the brake pedal, and an unknown warning light illuminated. Due to the failure, the vehicle was towed to an independent mechanic, where the vehicle was diagnosed with a vacuum pump failure, which caused the end of the cam shaft to fracture. The contact called several dealers and was informed that the cam shaft was on backorder. The contact stated that one of the dealers stated that the failure was a common issue resulting in the part being on backorder. The manufacturer was also notified of the failure and referred the contact to the NHTSA Hotline. The contact was informed that only the NHTSA could place a recall on the vehicle. The cam shaft and vacuum pump had been repaired. The failure mileage was approximately 80,000. The VIN was not available.”