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)

- Derry, NH, USA

I have been trying since day one of my brand new 2023 Sierra Denali pickup truck hence I spent a $100 K plus OEM accessories at the dealer ! This complaint is in reference to the safety part of the brake trailing that disconnect and lose light and brakes ! I have Spent insane times at the dealers and have complained to the GMC Executive offices with Nothing but excuses and Absolutely Zero Help from GMC Cooperate but continue to go make appointments at the dealers ! This is Safety complaint and they are not taking this seriously at all ! There is defiantly a ongoing issue with either the computer onboard or the trailer Module ! I am not a engineer but again this is a safety Issue that needs to be looked at ASAP ! I do not feel safe driving the truck !

- Port Charlotte, FL, USA

Component or system failure: headlights and interior lighting Safety risk: Complete failure of the headlight system and all interior lighting, including the dashboard during active driving. System failed during nighttime driving while in motion. Reproduced": No Inspected": No Warning lights/system messages: None present at time of failure

- Croswell, MI, USA

Nighttime backing up is to dark to see in the camera. The reverse lights are not bright enough to highlight the area to see correctly. This is a major concern as i almost backed up over my child at night as i could not see them in the camera. Please address with manufacture to resolve the issue. This truck has one piece LED lights that can not be pulled and swapped out with a brighter bulb. would need to replace the entire fixture.

- Auburndale, FL, USA

The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed at night on an undulating roadway, the contact noticed that due to the narrow vertical area of illumination of the head lights, front visibility was severely reduced, with the lowest portion of the area in front of the vehicle receiving little to no illumination. The contact stated that the failure was not present while driving on a flat roadway. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was notified of the failure but was unable to provide any assistance. The failure mileage was 1,000.

- Burlingham, NY, USA