2 weeks ago I was driving on the highway doing 65 mile per hour and suddenly my truck started shaking and. Suddenly completely shut down lost power brakes stiffed and steering wheel as well. I safely pulled over to try to restart the vehicle and on my dash board light came on engine, TCM light and a light with a little car with hash marks called dealer the technician said it was a ecm. Problem and that am looking at a price of 7,000 dollars which is not in my budget reaching out to see if is maybe a manufacturing issue

- Rancho Cordova, CA, USA

When placing the vehicle in reverse, the infotainment screen goes to full brightness on the reverse camera, making it difficult to see at night by lighting up the cabin causing interior reflections when trying to see out the windows at mirrors or behind the vehicle. There is no way to adjust the brightness setting. This is a pointless feature as the camera becomes the required visual point and is sometimes obscured by dirt or water so the driver is forced to fight the bright useless screen to see out the windows.

- Swansea, MA, USA

I was traveling on a two lane highway, a semi in front of me and a truck behind me. A warning message popped up on my dash -??Service Emissions System- 65 mi before 65mph max speed-??. And within 5 seconds of that message popping up, the engine detuned itself. I pulled over as quick as I could, but I only made it partially out of the road before the engine shut down completely. I couldn-??t start the vehicle again to get it the rest of the way out of the road. I was 40 miles from the nearest town on a Sunday. I had to turn on my flashers and sit outside the vehicle for 4 hours until a tow truck was able to come get me. Thankfully at the time of incident I was on a rural highway and I wasn-??t hurt, but I could have been seriously injured haha this happened on the freeway or a road in the city. It then sat at the dealership for 3 months following this to get a diagnostic and repair.

- Santaquin, UT, USA

Key sticks in ignition on accessory and cannot be removed. Service Bulletin generated by GMC. Available for inspection. Safety: with key stuck in accessory position battery goes dead in 4-6 hours, potentially stranding occupants and depending on location possibly creating a traffic hazard. Three attempts by GMC Fremont CA to repair so far. They have confirmed the problem. No warning or message.

- Oakland, CA, USA

I have been receiving the -??Service Trailer Brake System-?? error intermittently. The only information I have been have to find around this is a defective wiring harnesses between two modules. This defect is not due to wear/tear and has been reported as a defective part on multiple GMC models. When this service error pops up it is distracting and very unsafe for driving as well as dangerous when towing as the driver has no idea of the trailer brake system is functioning properly..

- Belfast, ME, USA

Vehicle has less than 25,000 miles. Over the last 3 days, after vehicle is put in park and turned off, the key will not always rotate back to the 'off' position, and can not be removed from the ignition. This has happened at least 6 times over the last 3 days. Managed to remove key by turning vehicle back on and driving back and forth a few inches, then trying again. Took multiple tries on some occasions. With less than 25,000 miles, nothing should be worn out... Safety concerns:The possibility that the key will completely fail to be removable, meaning that if the vehicle must be left unattended, it must be left unlocked and in a condition that it could be started and stolen or driven by a curious child. The possibility that see-sawing back and forth in a parking spot could lead to an accident. The possibility that the vehicle will have to be towed. The possibility of being stranded outside- all my keys are on one ring, if I can't get them out of the ignition, how would I open the door to the house? The problem has not yet been reproduced or confirmed by a dealer or independent service station. I will be calling to schedule an appointment. The vehicle or component has not been inspected as of yet. No warning lamps, messages, or other symptoms happened prior to the first incident. When I returned home and had an opportunity, I did an internet search and discovered that the problem is a known issue, and has been reported by others.

- Moodus, CT, USA

6 different occasions same issue. No sound when trying to start. 10 minutes later vehicle starts and cel is lit. Never auto shifts after ~30mph. Replaced torque converter and transmission body valve on 1st occurrence. Each time serviced (warranty), and at some point the problem will occur again. Total of 6 times since purchased new.

- Opelika, AL, USA

The contact owns a 2018 GMC Canyon. The contact stated that while attempting to turn the vehicle off, the vehicle remained running. The contact was also unable to remove the key from the ignition. There were no warning lights illuminated. The contact stated that the failure was intermittent. The vehicle was taken to coyle Chevrolet Buick GMC 1801 broadway St, clarksville, in 47129 where the dealer was unable to duplicate the failure. The manufacturer had not been notified of the failure. The vehicle had not been notified. The failure mileage was approximately 18,000.

- Borden, IN, USA