IllustrationADJUSTMENT HANDLE BROKE OFF AT THE BASE. AS A RESULT, SEAT COULD NOT BE ADJUSTED. *AK
1999 GMC Sonoma
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 1999 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
10–25K
825–50K
750–75K
075–100K
5100–150K
3150K+
24 reports with mileage · 33 unknown
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.
- Power Train. Review the 8 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Seats. Review the 8 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Structure. Review the 8 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
6 crash reports1 fire reports5 injury reports
What owners actually said
57 reportsDIFERENTIAL HAS A ZUMING VIBRATING AND CLIKING NOISE WHEN DRIVING BOTH AJUSTABLE SEAT HANDELS BROKE AND 3RD SMALL DOOR HANDEL HAS NEVER WORK PROPERLY AND KEEPS BREAKING. *AK
SEALS AND GASKETS FOR THE DIFFERENTIAL, POWER STEERING, OIL PAN AND DRIVE TRAIN WERE ALL WORN AND NEEDED REPLACING
WHILE DRIVING 65 MPH CONSUMER HIT A COW IN THE ROAD, AND THE AIR BAGS DID NOT DEPLOY. TOOK VEHICLE TO DEALERSHIP, WHERE THE MECHANIC HAD NOT RESOLVED THE PROBLEM.*AK
BOTH DRIVER AND PASSENGER SEAT RECLINE HANDLES HAVE COMPLETELY LEAVING BOTH SEATS INCAPABLE OF RECLINING. UNFORTUNATELY, LEAVING THE OCCUPANTS VULNERABLE IF AN ACCIDENT WERE TO OCCUR. DRIVERS SIDE BROKE TWICE. 1ST TIME REPAIRED UNDER WARANTY. DRIVERS SIDE BROKE AFTER WARANTY HAD EXPIRED. PASSANGERS SIDE SAME AFTER WARNTY EXPI…
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BOTH DRIVER AND PASSENGER SEAT RECLINE HANDLES HAVE COMPLETELY LEAVING BOTH SEATS INCAPABLE OF RECLINING. UNFORTUNATELY, LEAVING THE OCCUPANTS VULNERABLE IF AN ACCIDENT WERE TO OCCUR. DRIVERS SIDE BROKE TWICE. 1ST TIME REPAIRED UNDER WARANTY. DRIVERS SIDE BROKE AFTER WARANTY HAD EXPIRED. PASSANGERS SIDE SAME AFTER WARNTY EXPIRED. NEATHER REPLACED AT THIS TIME. *AK
THE HEATER ON MY VEHICLE HAS STOPPED WORKING AND THE MANUFACTURE (GMC) AND THE DEALERSHIP REFUSE TO COVER IT UNDER WARRANTY. THERE IS A NHTSA BULLERIN ON THIS (634218). I WOULD LIKE TO KNOW HOW MANY OTHER VEHICLES LIKE MINE (1999 GMC SONOMA) HAVE EXPERIENCED THIS PROBLEM.
DEALER WHERE VEHICLE WAS TOWED FOR REPAIRS SAYS THE AUTOMATIC TRANSMISSION MUST BE PULLED AND DISASSEMBLED TO DETERMINE WHAT IS BROKEN AND THE FACTORY WILL NOT PROVIDE WARRANTY RELIEF SINCE THE TRUCK IS OVER 4 YEARS OLD EVEN THOUGH THE VEHICLE HAS ONLY 36,489 MILES. ORIGINAL WARRANTY WAS 3 YEARS OR 36,000 MILES WHICH EVER COME…
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DEALER WHERE VEHICLE WAS TOWED FOR REPAIRS SAYS THE AUTOMATIC TRANSMISSION MUST BE PULLED AND DISASSEMBLED TO DETERMINE WHAT IS BROKEN AND THE FACTORY WILL NOT PROVIDE WARRANTY RELIEF SINCE THE TRUCK IS OVER 4 YEARS OLD EVEN THOUGH THE VEHICLE HAS ONLY 36,489 MILES. ORIGINAL WARRANTY WAS 3 YEARS OR 36,000 MILES WHICH EVER COMES FIRST. VEHICLE HAS BEEN SERVICED BY DEALER SINCE PURCHASE. THE TRUCK GAVE A HIGH SCREECHING NOISE AND LOSS OF POWER IN THE TRANSMISSION, FORWARD DRIVE GEAR. I PULLED OFF THE FAIRFAX COUNTY PARKWAY IN HERNDON AND PULLED INTO A PARKING LOT. NEXT DAY TRIED TO BACK UP TRUCK AND TRANSMISSION GAVE SCREECHING NOISE AND VEHICLE WOULD NOT MOVE. IF VEHICLE IS 2, 3 OR 4 YEARS OLD BUT ONLY HAS 36,489 MILES WHY CAN'T GMC PROVIDE RELIEF FOR A VEHICLE DEFECT IN THE TRANSMISSION WHICH IS SAFETY RELATED DUE TO LOSS OF POWER AND MANEUVER ABILITY WHEN IT OCCURRED? VEHICLE IS AT A GMC DEALER WHICH I DID NOT PURCHASE FROM FOR REPAIRS AS I HAVE HAD IT TOWED TO THE NEAREST DEALER FOR REPAIRS. CAN YOU PROVIDE SOME ASSISTANCE WITH GMC ON WARRANTY OR SECRET WARRANTY REPAIRS? *JB
REAR BRAKE ROTORS DISINTEGRATED AFTER 22,000 MILES. HAD TO BE TURNED AND PADS REPLACED. FRONT ROTORS REPLACED AT 32,000 MILES SAME CONDITION. MASTER CYLINDER FAILED AND NEEDED TO BE REPLACED AT 32,800 MILES. PEDAL WENT TO THE FLOOR AND NEARLY WENT IN FRONT OF A SEMI. PEDAL CAN BE PUMPED UP BUT GRADUALLY GOES TO FLOOR. *…
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REAR BRAKE ROTORS DISINTEGRATED AFTER 22,000 MILES. HAD TO BE TURNED AND PADS REPLACED. FRONT ROTORS REPLACED AT 32,000 MILES SAME CONDITION. MASTER CYLINDER FAILED AND NEEDED TO BE REPLACED AT 32,800 MILES. PEDAL WENT TO THE FLOOR AND NEARLY WENT IN FRONT OF A SEMI. PEDAL CAN BE PUMPED UP BUT GRADUALLY GOES TO FLOOR. *TT
BOTH DRIVER AND PASSENGER SEAT RECLINE HANDLES HAVE COMPLETELY BROKE OFF LEAVING BOTH SEATS INCAPABLE OF RECLINING. UNFORTUNATELY, THE PASSENGER SIDE SEAT IS STUCK IN A FORWARD POSITION LEAVING THE PASSENGER SOMEWHAT VULNERABLE IF AN ACCIDENT WERE TO OCCUR.*JB
AFTER STARTING VEHICLE, CONSUMER STATES THE FUEL INDICATOR READS VEHICLE IS FULL OF GAS. WHEN IN ACTUALITY VEHICLE IS EMPTY. AND WHEN TANK IS EMPTY IT READS FULL. DEALER HAS BEEN CONTACTED. PLEASE PROVIDE ANY FURTHER INFORMATION. TS
Official recalls
0No recalls in this snapshot.
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
0No exact-year investigations in this snapshot.