2025 GMC SIERRA EV Fuelpropulsion System Problems

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.

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.