THERMOSTAT FAILED CAUSING VEHICLE TO OVERHEAT. MJS
1989 GMC S15
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all S15 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 0 of 8 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Electrical System. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Equipment. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
Equipment complaints
1 reportsOfficial recalls
193V008000 · Engine And Engine Cooling:cooling System:fan
Jan 14, 1993
THE ENGINE COOLING FAN BLADES BREAK AS A RESULT OF FATIGUE AND/OR VEHICLE INDUCED STRESS.
Consequence & remedy
Consequence: IF THE BLADE BREAKAGE OCCURS WHILE THE HOOD IS OPEN, APERSON WORKING UNDER THE HOOD OR IN THE VICINITY OF THE VEHICLE COULD BE STRUCKAND INJURED BY THE BLADE SEGMENT.
Remedy: INSTALL A NEWLY DESIGNED FAN ASSEMBLY.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1EA94029 · Engine Compartment Fires
Opened Jul 29, 1994 · Closed Jul 31, 1996
Status: closed (inferred from source dates) · Engine And Engine Cooling
AN ALLEGED MALFUNCTION IN THE ATLERNATOR RESULTING IN ENGINE COMPARTMET FIRES.
Illustration