Total Complaints
12 filings
GMC S15 · model year
1991 GMC S15
12 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 1991GMCS15 carries 12 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 1991 S15 is service brakes, hydraulic:antilock/traction control/electronic limited slip with 6 filings, followed by seat belts:front:buckle assembly (2) and service brakes, hydraulic (1). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 2 investigation files overlapping the 1991 S15. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
12
Complaints
0
Crashes
0
Fires
0
Injuries
0
Deaths
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
Complaints vs. fleet median (215)
At or below the fleet median complaint volume.
Complaints by Component
| Component | Count |
|---|---|
| SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP | 6 |
| SEAT BELTS:FRONT:BUCKLE ASSEMBLY | 2 |
| SERVICE BRAKES, HYDRAULIC | 1 |
| ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH | 1 |
| POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT | 1 |
| ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL | 1 |
Recent Complaints
19990908SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
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 (?).
19990908ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
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 (?).
19981002SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
ABS FAILED; ELECTRONIC DASH PANEL BURNED UP; AND THE REAR AXLE SHAFT BEARING FAILED.
19981002ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH
ABS FAILED; ELECTRONIC DASH PANEL BURNED UP; AND THE REAR AXLE SHAFT BEARING FAILED.
19981002POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT
ABS FAILED; ELECTRONIC DASH PANEL BURNED UP; AND THE REAR AXLE SHAFT BEARING FAILED.
19980811SERVICE BRAKES, HYDRAULIC
BRAKES FAILED.
19970205SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
ANTI-LOCK BRAKING SYSTEM HAS BECOME INOPERATIVE, NO LONGER FUNCTIONS , ABS LIGHTS CAME ON AND REMAINED ON, DEALER WILL CHANGE ELECTRO HYDRAULIC CONTROL UNIT. *AK
19960418SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
FAILURE ON THE ABS BRAKES, THE LIGHTS STAY ON THE DASH. *AK
19960418SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
FAILURE ON THE ABS BRAKES, THE LIGHTS STAY ON THE DASH. *AK
19951205SEAT BELTS:FRONT:BUCKLE ASSEMBLY
THE BACK SEAT BELT BUCKLES DON'T HOLD. PLEASE DESCRIBE. TT
19951031SEAT BELTS:FRONT:BUCKLE ASSEMBLY
REAR PASSENGER CENTER SEAT BELT BUCKLE, MALE WON'T GO INTO FEMALE PORTION. TT
19951013SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
WHILE DRIVING EXPERIENCE INTERMITTENT FAILURE OF ANTI-LOCK BRAKE CONTROL MODULE, RENDERING ABS INOPERATIVE, WITHOUT WARNING. TT ELECTRONICS INSIDE ABS CONTROL MODULE FAILED AND THE UNIT WAS NOT SERVICABLE. *YH
Compare 1991GMCS15 to Similar Vehicles
NHTSA Investigations
Frequently Asked Questions
How many complaints does the 1991 GMC S15 have?▼
The 1991 GMC S15 has 12 NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 1991 GMC S15?▼
The most-complained component for the 1991 GMC S15 is SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP with 6 complaints. Other frequently reported areas include SEAT BELTS:FRONT:BUCKLE ASSEMBLY and SERVICE BRAKES, HYDRAULIC.
Is the 1991 GMC S15 safe to buy?▼
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?▼
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.
Vehicle Safety Guides
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.