2023 GMC SIERRA 1500 Complaints

The truck stopped in the middle of an intersection with a transmission error code stating it could no longer shift. The transmission was locked and unable shift or move.

While driving at about 70 mph, the screens in the vehicle went black and the truck had a complete loss of power. The vehicle inadvertently braked to approximately 30 mph and went into limp mode. The check engine warning light came on and the service power steering warning light, the service transmission warning light, the low tire pressure warning light, and the traction control warning light all illuminated. There were also messages displayed on the instrument panel to Service 4-WD and Reduce Acceleration and Drive with Care.”

The contact owns a 2023 GMC Sierra 1500. The contact stated that while her husband was driving at various speeds, the rear liftgate door erroneously opened. The vehicle was taken to the local dealer who diagnosed that the exterior touchpad switch assembly was faulty and needed to be replaced. The touchpad switch assembly was replaced, and the vehicle was repaired. The manufacturer was notified of the failure and informed the contact that the VIN was not included in NHTSA Campaign Number: 24V060000 (LATCHES/LOCKS/LINKAGES). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 35,000.

I was driving on a rural and narrow 2 lane road with next to no shoulder when my engine started losing power. There were no check engine lights or other indicators of failure until the final 2 seconds. At that point, a message popped up on the dash stating something along the lines that my engine oil was too hot and to idle the engine. 2 seconds later, at 50mph my engine died. That is scary enough, but I was also towing a 5,000lb+ trailer, it was -3F, heavy winds, and I had my 2 dogs with me. Thankfully, I kept my wits about me, remained calm, and made it to the side of the road. As mentioned, there was not much shoulder so this put me in great danger of being hit by careless drivers speeding by. The nearest police officer was an hour away, so I was in quite a predicament. Had this happened to most other people, the narrative would have ended much differently. Come to find out, this is a common issue with these 6.2l engines. So much so, that there is a backorder on the engines due to the high replacement demand. This poses extreme danger not only "in the moment" of failure, but also the environmental dangers/risks users are potentially exposed to, just as I was. This needs to be a recall as this is a substantial and immediate safety issue in my opinion.

The contact owns a 2023 GMC Sierra 1500. The contact stated the vehicle was consuming excessive oil consumption. The contact mentioned that the vehicle was consuming oil every 2,000 miles. The vehicle was not taken to a dealer. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and confirmed that the vehicle was consuming oil at a regular timeframe. The manufacturer advised the contact to have an oil consumption test. The failure mileage was 21,000.

When driving leaving my home and about 2 miles in operation the truck lost power. Not realizing quite what was happening looking at the instrument panel I noticed a drop in RPM and speed. There were no other indicators of problems and The check engine light didn't come on. Instinctively i pushed the accelerator down with no response. Now realizing that the truck was having problems I tried to get off the road. The area of malfunction was not a good place to stop and did the best I could, the truck half out of the traffic lane. In trying to restart the truck which turned over but would not restart. I felt it was acting like it ran out of fuel, checking the fuel gage which indicated 3/4 tank. The truck was towed to the dealership. During the intake conversion the employee stated " it's probably the fuel control module " which I thought was odd at the time with no one even looking at the truck. Finally results was the fuel control module. I am thinking back on how the truck abruptly came to the stop that I was not in a center lane of a busy highway. In my research I have noticed that there seems to be an updated part number and replacement for this OEM fuel module. I did order a spare to have just in case this happens again. Few things I find interesting is that the dealer knew what the problem was during intake, had one on the shelf and replaced it and had me going the next day. This incident i surely wouldn't want to happen to my wife, anyone on a busy highway or other unsafe situation that the engine needs to in operation.

The reverse lights are too dim to provide sufficient viewing of the rear of the truck when it is dark outside and there is no other lighting. Almost nothing can be seen from the rearview or sideview mirrors, and the backup camera is rendered useless. GM changed the design of the taillights such that they are now sealed, which means owners cannot upgrade the reverse lights with stronger LEDs any longer. This lack of lighting is more than an inconvenience; it is a safety issue. This is a known issue and GM is well aware of it. [XXX] [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2023 GMC Sierra 1500. The contact stated upon attempting to start the vehicle remotely, the lights illuminated; however, the engine failed to turn over. The contact stated that upon pressing the Push to Start button, the message "Service Braking System" and other braking system messages, and message that the "Top Speed 43 MPH" were displayed. The check engine warning light was illuminated. Additionally, the contact stated that the vehicle experienced reduced braking while driving at various speeds. The vehicle was taken to the dealer where an unknown software update was performed; however, the failure recurred. The contact stated that the failure occurred intermittently. The vehicle was taken back to the dealer, where a service representative scanned the vehicle and informed the contact that diagnostic trouble codes were retrieved; however, the dealer later informed the contact that the failure could not be replicated. The contact used a scanner to scan the vehicle and retrieved diagnostic trouble codes. The manufacturer was notified of the failure and a case was opened. The manufacturer later informed the contact that they could not assist because the dealer stated that the failure could not be replicated. The failure mileage was unknown.

The issues with my vehicle began when the radio intermittently cut off or froze. Despite several attempts by the dealer to resolve the problem, they were unsuccessful. Early on, various electrical components failed to load or perform correctly, with the dealer attributing this to software updates. Currently, when the radio cuts off or freezes, I experience additional problems: the headlights randomly flash between dim and bright, the heads-up display fails to load or shows incomplete information, the collision detection activates with no objects around, and dynamic cruise control becomes unreliable or fails to engage. The wipers operate randomly, and the vehicle stalls when the auto start/stop feature is engaged. Random warning lights appear on the dash, and each day brings new, different issues. A new symptom involves the vehicle not recognizing the keys are inside, causing it to shut off and lock me inside. This recently happened while I was driving at low speed in a parking lot, which poses a serious safety risk. On the interstate, safety issues are more concerning: headlights flashing on and off, dynamic cruise control failing, BLIS and collision control activating unexpectedly, and the vehicle locking me inside with keys in the truck. My children are scared to ride in the vehicle due to these issues. The dealer claims they cannot replicate the problems, despite videos I’ve provided showing malfunctions. They acknowledge the issues but blame them on software updates. Multiple updates have been applied, but the problems continue and are becoming more frequent, affecting more systems. The vehicle is under warranty, but as of December 13, 2024, the dealer has refused to service it. After the dealer completed some work, an independent inspection confirmed the issues persist. Warning messages and malfunctioning lamps have been captured on video. Problem has been reported from first service approximately 6/2023 as radio malfunction / electrical issues

Coolant control valve malfunction Vehicle placed into limp mode while driving with no way to reset. Vehicle taken to dealer and issued verified with part ordered. Multiple dash warning lights and several different limp modes activated prior to vehicle needing to be stopped