Table 1 shows four common electrical system related problems of the 1999 GMC Sonoma. The number one most common problem is related to the fuses and circuit breaker (one problem). The second most common problem is related to the underhood wiring (one problem).
| Problem Category | Number of Problems |
|---|---|
| Fuses And Circuit Breaker problems | |
| Underhood Wiring problems | |
| Ignition Module problems | |
| Ignition Switch problems |
Brake lights are inoperable. Dealer has been notified. Please provide further information. Read details...
1) boyfriend driving, pulled up to intersection, truck stalled, restarted, died, noticed smoke, opened hood, fire near battery and antifreeze container, put out with snow, vehicle towed to dealership, contacted gm, told a rep would contact me within 24-48 hours, that was a week ago, no call, Read details...
When vehicle is in or out of gear engine idles, rpm will flucuate between 1600-3000 intermittently. Dealer ehas replaced idle motor, throttle positioner, new computer , and new software for computer. After several attempts to correct defect, dealer is claiming it is normal. Read details...