One problem related to warnings has been reported for the 2026 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2026 GMC Sierra 1500 based on all problems reported for the 2026 Sierra 1500.
Vehicle keeps displaying a warning message to service drivers assistance system. Taken the vehicle to the dealership multiple time and the condition still persists. Dealership contacts gm tech support and are being told that gm is aware of the problem, programing issue, but they have no solution after several months. Multiple vehicles at many dealerships have the same problem. I don't feel safe driving the vehicle. Drivers assistance system includes multiple cameras and sensors. This condition could cause severe accidents of even death if the system gives false or wrong information.
| Automatic Emergency Braking problems | |
| Adaptive Cruise Control problems | |
| Warnings problems |