Table 1 shows seven common electrical system related problems of the 2004 GMC Sierra. The number one most common problem is related to the instrument panel (18 problems). The second most common problem is related to the electrical system (eleven problems).
2004 GMC Sierra 2500hd, instrument panel started showing the rpm's to be in the red zone, then the speedometer would quite working, then the gas gage would quite working, then the temperature gauges quite working, to begin with it would happen periodically till it quite working completely. Read details...
Ignition will not turn over. Battery is fine, everything works except turning over. When you turn the key nothing happens everything goes dead. I have a video. Read details...
The speedometer,oil pressure gauge, alt meter, fuel gauge have all failed over the last several years. None of them read correctly. Read details...