IllustrationENGINE WOULD CONSTANTLY OVERHEAT WHILE DRIVING AT ANY SPEED. VEHICLE HAD BEEN TAKEN TO A DEALER SEVERAL TIMES. DEALER REPLACED THE ENGINE THERMOSTAT, AND PROBLEM RECURRED. CONSUMER TOOK THE VEHICLE TO ANOTHER DEALER, AND THEY INFORMED HIM THAT THE THERMOSTAT WAS DEFECTIVE. *AK
1991 GMC Sonoma
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 1991 GMC Sonoma do not stand out strongly from the model-year median of 57.
About this comparison →How this year compares
Owner complaints by model year
Compare all Sonoma 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: 4 of 29 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.
- Service Brakes, Hydraulic. Review the 14 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
3 crash reports3 fire reports1 injury reports
Engine And Engine Cooling complaints
4 reportsPROBLEM WITH EXHAUST PIPE ON MUFFLER.*MR THE CONSUMER WAS REFERRED TO A MUFFLER SHOP TO HAVE A PATCH PUT ON THE FRONT HEADER PIPE AND WAS NOT GIVEN ANY OPTION TO HAVE IT FIXED CORRECTLY *TS *JB
CONSUMER HAD TO REPLACE THE REAR BRAKE SHOES AND TAIL PIPE. THE CONSUMER TOOK THE VEHICLE TO THE DEALER FOR EXHAUST REPAIR. THE DEALER SUGGESTED THAT EH CONSUMER TAKE THE VEHICLE TO THE MUFFLER SHOP FOR A HEADER PIPE PATCH. THE CONSUMER IS INTERESTED IN KNOWING IF A HEADER PIPE PATCH IS ILLEGAL WITH THE PRESENT VEHICLE EMISSI…
Read full complaint
CONSUMER HAD TO REPLACE THE REAR BRAKE SHOES AND TAIL PIPE. THE CONSUMER TOOK THE VEHICLE TO THE DEALER FOR EXHAUST REPAIR. THE DEALER SUGGESTED THAT EH CONSUMER TAKE THE VEHICLE TO THE MUFFLER SHOP FOR A HEADER PIPE PATCH. THE CONSUMER IS INTERESTED IN KNOWING IF A HEADER PIPE PATCH IS ILLEGAL WITH THE PRESENT VEHICLE EMISSIONS STANDARD. *MR *CB *NLM
ENGINE COMPARTMENT FIRE.(OHIO STATE POLICE REPORT)
Official recalls
199V193000 · Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip
Jul 19, 1999
VEHICLE DESCRIPTION: CERTAIN 4-WHEEL DRIVE PICKUP TRUCKS AND SPORT UTILITY VEHICLES EQUIPPED WITH ABS (ANTILOCK BRAKING SYSTEM) MANUFACTURED FROM SEPTEMBER 1989 THROUGH AUGUST 1996. UNDER CERTAIN DRIVING CONDITIONS THE SWITCH WHICH SIGNALS THE ABS SYSTEM WHETHER THE VEHICLE IS IN 2-WHEEL OR 4-WHEEL DRIVE CAN MALFUNCTION CAUSING INCREASED STOPPING DISTANCES DURING ABS STOPS WHILE IN THE TWO-WHEEL DRIVE MODE.
Consequence & remedy
Consequence: IF THIS OCCURRED AT A TIME WHEN MINIMUM STOPPING DISTANCE WAS REQUIRED, A VEHICLE CRASH COULD OCCUR WITHOUT PRIOR WARNING.
Remedy: DEALERS WILL REPLACE OR REPAIR THE 4-WHEEL/2-WHEEL DRIVE SWITCH.
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
1PE94046 · Abs Braking System Fails
Opened Jun 17, 1994 · Closed Oct 31, 1994
Status: closed (inferred from source dates) · Service Brakes, Hydraulic
There is no summary currently available