Table 1 shows nine common electrical system related problems of the 1999 GMC Sierra. The number one most common problem is related to the fuses and circuit breaker (three problems). The second most common problem is related to the dash wiring (two problems).
Consumer applied horn while driving and horn failed while abs light came on. Dealer determined that horn had shorted out, causing abs circuit board to fail. Read details...
When I'm driving down the road at night the dashboard flashes on and off. All of the guages go nuts and the engine dies. They tell me that the computer has been soaked with water and needs to be replaced. Read details...
I was informed by oconnors dealship of auburn, me. That the ecm shorted out and needed replacement at a cost of 700 dollar, not including labor. Read details...