GMC Sierra 1500 owners have reported 1,011 electrical system related problems since 1996. Table 1 shows the 30 most common electrical system problems. The number one most common problem is related to the vehicle's electrical system (783 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.
Every time I pull the truck into my garage or a parking stall at low speeds while using the front park sensor it will shut off with the automatic start stop while still in motion. Then you have to let off the brake pedal for it to start and sometimes the vehicle will search forward. 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...