GMC Sierra owners have reported 263 electrical system related problems since 1996. Table 1 shows the 25 most common electrical system problems. The number one most common problem is related to the vehicle's electrical system (105 problems). The second most common problem is related to the vehicle's instrument panel (38 problems). For details of each of the problem category, use the links in the table.
The contact owned a 2016 GMC Sierra 1500. The contact stated that while driving at various speeds, the vehicle would lose automotive power. The vehicle was taken to a dealer where the negative battery was replaced. The vehicle was repaired. Read details...
2005 GMC Sierra. Consumer writes in regards to vehicle speedometer stopped working. Read details...
Vehicle started showing "service lane departure system, service park assist, service trailer brake system" alarms while driving. Upon taking it to the dealer for service it was found to have broken wiring for haptic motor for drivers seat. Read details...
Heater /ac fan 5 speed not working and wires to blower under pass side hot to the touch and plastic jacket on wires burning off also connector with same leads to blower melting to socket unable to unplug ( unable to use heat or fan without build of heat on wire) lots of burning smell. Read details...
While driving pulling a boat trailer truck lost all power doors started locking and unlocking continually,all gauges and warning lights come on truck lost power and cuts off loosing breaking and steering, radio resets , speakers not working. Read details...