1999 GMC Sonoma Exterior lighting Problems
- Complaints
- 2about this part
- Share
- 4%of 57 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the exterior lighting of the 1999 GMC Sonoma, 4% of the 57 complaints for this model year.
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.
“Whenever turn signal is activated, day time running lights go out. After turn signal goes off, daytime running lights come back on. Dealer/ manufacturer are aware of the problem. Problem has not been corrected.”
NHTSA complaint #838774, filed 1999-06“Headlights cut off when the signal lights are applied, then come back on. Also when driver parks the vehicle the headlights are out. Dealer can't find solution.”
NHTSA complaint #855885, filed 2000-02Exterior lighting: other model years
Other parts of the 1999 GMC Sonoma
9 complaintsSeats
8 complaintsBody and structure
8 complaintsTransmission and drivetrain
8 complaintsAir bags
6 complaintsElectrical system
4 complaintsEngine cooling
4 complaintsFuel system
3 complaintsOther or unknown
3 complaintsSeat belts
3 complaintsSteering
3 complaintsVehicle speed control
3 complaints
← All problems reported for the 1999 GMC Sonoma
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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