GMC Sierra 1500 owners have reported 1,099 electrical system related problems since 1996. Table 1 shows the 31 most common electrical system problems. The number one most common problem is related to the vehicle's electrical system (867 problems). The second most common problem is related to the vehicle's instrument panel (110 problems). For details of each of the problem category, use the links in the table.
I stopped at a stoplight and my truck shut off, the doors unlocked and then immediately restarted and then came up with a bunch of errors telling me that my brake system failed and to get the traction control serviced. I then had no power braking. Read details...
The contact owns a 1999 GMC Sierra 1500. While the vehicle was in neutral, the instrument panel gauges failed and flickered without warning. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was unknown. Read details...
My 2019 2500hd (49,00 miles) truck had water leaking in through the roof. The dealership found that the leak was caused by a bad factory tack weld on the passenger side roof seam. Due to this bad tack welkd, it caused water to leak down the a-piller, down into my electrical fuse box and wiring. Read details...
On several occasions spanning multiple years the truck loses power while braking and turning at slow speeds. On more rare occasions, but still numerous, the same problem occurs when braking at higher speeds without turning. Read details...
--unwanted reduction in the front hvac blower speed and loss of radio, auto ac not working as designed --driver seat vibrating as the lane departure warning activated; I had turned the seat vibrate function off on 25 June 2023. Read details...