*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Forward collision avoidance › Adaptive cruise controlCrash1 injury
The contact owned a 2025 GMC Sierra EV. While the contactâs husband was driving 69 MPH, the Super Cruise control feature became inoperable. The driver dozed off while operating the vehicle, and there was no audible alert to alert the contact. The contact stated that due to the failure, the vehicle traveled through an intersection, crossed over other lanes, and crashed into a guardrail. The air bags deployed during the crash. The contact sustained bruise on the arm and scratches in the crash. A Police report was filed. The vehicle was towed to a service center and was deemed a total loss by the insurance company. The contact stated that the super cruise feature should have alerted the…
Sep 16, 2026 · 9,800 milesVisibility/wiper
The HVAC airflow-direction system failed and no longer correctly controls where the air is directed. Even when the windshield defrost setting is not selected, the system continuously sends airflow toward the windshield. This unwanted airflow causes condensation and fogging on the windshield that cannot be turned off or redirected, impairing the driver's visibility and creating a significant safety hazard. The airflow is also defective in the other ventilation zones. Air is not consistently directed to the selected dashboard, floor, or other vents, and the HVAC system does not operate as designed. This results in poor climate control and significant discomfort for the driver and passengers.…
Jun 26, 2026Electrical system
Vehicle electrical propulsion system became inoperable creating a hazard to occupants in a temperature control required climate Vehicles visual control showing speed and all other information went completely black while vehicle was in motion.
Oct 16, 2025Visibility/wiper
The passenger side outside rear view mirror does not provide for a clear view on the passenger side of the vehicle. The adjustments on the mirror cannot be set to reduce or eliminate a blind spot on the vehicle. The mirror is not like a normal mirror from other vehicles. I have almost hit several vehicles due to the lack of clear view with the mirror. To give an idea of the blind spot, a vehicle can be seen in the rear view mirror but not seen in the side view mirror or it gives a false distance of where the vehicle is on side mirror. There is no verbiage on the side view mirror of objects appear closer like other mirrors do.
Jun 6, 2025Service brakes
My 2025 GMC Denali EV has experienced repeated safety-critical issues, including severe torque pull under acceleration, making it difficult to maintain safe lane position and compromising steering control. This behavior persists even after inspection and is documented on video. The vehicle has also had repeated service brake assist faults, including one critical failure at under 6,000 miles and additional incidents that resulted in me being stranded out of state. Additionally, I have experienced ghost braking while reversing, where the vehicle unexpectedly applies brake force even when parking assist features are manually disabled. I have performed comparative testing with an identical…
May 27, 2025Visibility/wiper
The passenger rear view mirror is completely flat, not concave like every other mirror weâre used to on a passenger vehicle. This mirror glass is only used on the passenger mirror of the EV trucks for some unknown reason. It is completely unsafe in such a large truck without huge blind spots. Because it appears to be zoomed you can completely miss cars otherwise viewable in blind spot. This also makes setting the passenger mirror up for towing very challenging and also dangerous. In addition the software for the backup titling mirrors works as designed for about 20 seconds and then while still backing moves the mirrors back to the normal position making backing a trailer for example…
May 13, 2025Power train
Failure in the lithium-Ion battery system. Battery conditioning system failed to manage heating and cooling of the battery system leading to catastrophic system failure. Dealership and manufacturer are unable to make repair leaving the vehicle un-operable.
Mar 5, 2025Fuel/propulsion system
Battery heating module failed. This resulted in small, hard to distinguish, "service vehicle" icon to appear on the dash with no further information. This warning icon first appeared during a long drive, then went away on its own and eventually came back. This failure would eventually make charging, particularly in cold weather, impossible and potentially stranding the occupants. The servicing dealership has confirmed this failure and is attempting to replace the module. However, parts for this replacement seem to be unavailable with no current estimated arrival.
Jan 5, 2025
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.