1991 GMC S15 Engine cooling Problems
- Complaints
- 1about this part
- Share
- 13%of 8 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine cooling of the 1991 GMC S15, 13% of the 8 complaints for this model year. 1 recall campaign on record is filed under a similar system.
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.
“1) oxygen sensor failed at 37k miles & wouldn't pass state emission inspection, whole system rewired. Oxygen sensor failed again at 73k miles, new sensor installed. Oxygen sensor failing at 117k miles. Have not had it replaced yet. (2) ABS system failed shortly after purchase and fixed (under warranty-no details from dealer). Abs failed again at 37k miles. Control module replaced. Abs failed again at 117k miles, simultaneous failure of several wheel sensors. Abs system issue at 140k miles - sensors and backing plates (?).”
NHTSA complaint #711064, filed 1999-09Related recalls
- 93V008000Jan 14, 1993The engine cooling fan blades break as a result of fatigue and/or vehicle induced stress.Covers: GMC S15 1989–1992, Chevrolet S10 1989–1992
Engine cooling: other model years
Other parts of the 1991 GMC S15
6 complaintsSeat belts
2 complaintsElectrical system
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 1991 GMC S15
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 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