1999 GMC Sonoma Electrical system Problems
- Complaints
- 4about this part
- Share
- 7%of 57 total for the year
- Median mileage
- 156,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the electrical system of the 1999 GMC Sonoma, 7% of the 57 complaints for this model year. Where a mileage was given, the median is 156,000 miles. 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The contact owns a 1999 Gmc Sonoma. While driving 72 MPH on the highway, the vehicle lost all power and the power steering failed. After the vehicle stalled, all the lights illuminated on the instrument panel. The vehicle was towed to a dealer where it was diagnosed that the ignition switch needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 156,000.”
NHTSA complaint #10726262, filed 2015-06, 156,000 miles“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.”
NHTSA complaint #853284, filed 1999-11“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, vehicle just sits!! 2) ABS light on, told by dealership to make appointment, not a big deal. When light was on that was true, but light didn't always come on and it was like a brick was behind the brake. Had to slam on it! Not good on these winter roads. …”
NHTSA complaint #718952, filed 2000-02Related service bulletins
- 10171318Jan 31, 2020This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester…
- 10157018Sep 20, 2017This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester…
- 10113443Feb 22, 2017This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester…
- 10018585Jan 6, 2006Fuel and temperature gauge inoperative, low fuel and battery light on, prndl inoperative.
- 10017165Oct 27, 2005Instrument panel cluster interior and/or head lamps flicker.
- 10013530Apr 21, 2005Interior lights inoperative after bcm replacement b2618 diagnostic trouble code.
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2003 | 1 | 3% |
| 2002 | 8 | 14% |
| 2001 | 5 | 6% |
| 1999 | 4 | 7% |
| 1998 | 9 | 6% |
| 1997 | 9 | 8% |
| 1996 | 8 | 5% |
| 1995 | 9 | 4% |
| 1994 | 8 | 4% |
| 1993 | 5 | 9% |
| 1992 | 1 | 4% |
| 1991 | 3 | 10% |
Other parts of the 1999 GMC Sonoma
9 complaintsSeats
8 complaintsBody and structure
8 complaintsTransmission and drivetrain
8 complaintsAir bags
6 complaintsEngine cooling
4 complaintsFuel system
3 complaintsOther or unknown
3 complaintsSeat belts
3 complaintsSteering
3 complaintsVehicle speed control
3 complaintsExterior lighting
2 complaints
← All problems reported for the 1999 GMC Sonoma
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology