1999 GMC Sonoma recalls & complaints
Source: NHTSA, updated daily. Last checked 2026-10-19. Recalls apply to specific VINs — run your VIN to confirm.
1 safety recall, most serious first
1. Fuel system
What's wrong, in plain English: Fuel lines, tank or pump. Fuel problems usually mean a leak, and leaks mean fire risk. CERTAIN DELPHI FUEL PRESSURE REGULATORS, P/NOS. FP10020-11B1, FP10026-11B1, AND FP10027-11B1, SOLD AFTER JANUARY 9, 2007, AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES LISTED ABOVE. THE UNIVERSAL PRESSURE REGULATORS (UPR) WERE PRODUCED WITHOUT AN O'RING AND RETAINER.
What could happen: FUEL MAY LEAK, POSSIBLY RESULTING IN A FIRE.
The fix: DELPHI WILL NOTIFY OWNERS AND REPLACE THE UPR FREE OF CHARGE. THE RECALL BEGAN ON APRIL 23, 2007. OWNERS CAN CONTACT DELPHI AT 877-411-8770.
What to do
- Check whether your car is affected: enter your 17-digit VIN at nhtsa.gov/recalls. A recall covers specific VINs, not every 1999 SONOMA.
- Book a repair at any authorized GMC dealer. Quote NHTSA campaign 07E021000.
- The repair is free. By US law, safety recall repairs cost the owner nothing, no matter the car's age or mileage.
- Buying this car used? Ask the seller for proof the recall was completed, or run the VIN yourself before paying.
Official wording from NHTSA
Component: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES
Summary: CERTAIN DELPHI FUEL PRESSURE REGULATORS, P/NOS. FP10020-11B1, FP10026-11B1, AND FP10027-11B1, SOLD AFTER JANUARY 9, 2007, AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES LISTED ABOVE. THE UNIVERSAL PRESSURE REGULATORS (UPR) WERE PRODUCED WITHOUT AN O'RING AND RETAINER.
Consequence: FUEL MAY LEAK, POSSIBLY RESULTING IN A FIRE.
Remedy: DELPHI WILL NOTIFY OWNERS AND REPLACE THE UPR FREE OF CHARGE. THE RECALL BEGAN ON APRIL 23, 2007. OWNERS CAN CONTACT DELPHI AT 877-411-8770.
Notes: THIS RECALL ONLY PERTAINS TO AFTERMARKET DELPHI FUEL PRESSURE REGULATORS AND HAS NO RELATION TO ANY ORIGINAL EQUIPMENT INSTALLED BY GENERAL MOTORS. CUSTOMERS MAY CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY: 1-800-424-9153); OR GO TO HTTP://WWW.SAFERCAR.GOV.
Useful for owners
- OBD2 code reader — see what the car's computer is reporting
- Compact car fire extinguisher
- 1999 GMC Sonoma owner's manual
Owner complaints filed with NHTSA
Most complained-about parts: Brakes (15), Hydraulic (13), Seats (11), Transmission / drivetrain (10), Body / structure (9).
Complaints are unverified reports from owners. A pattern (many complaints about the same part) matters more than any single one.
Read recent complaints (8)
12/28/2017 · Airbags · crash
TL* THE CONTACT OWNED A 1999 GMC SONOMA. WHILE DRIVING 5 MPH ON A FLOODED DIRT ROAD, THE CONTACT CRASHED INTO A DITCH. AFTER THE CRASH, THE VEHICLE CAME TO A COMPLETE STOP. THE AIR BAG DEPLOYMENT WAS DELAYED. THE CONTACT SUSTAINED A CRACKED PELVIS, BROKEN FACIAL BONES, OPTIC NERVE DAMAGE, AND OTHER SEVERE INJURIES TO THE FACE. MEDICAL ATTENTION WAS REQUIRED…
12/13/2017 · Brakes
DURING A PANIC STOP THE BRAKE SYSTEM LIGHT CAME ON AND THE BRAKES FELT SOFT BUT STILL WORKED. DURING THE DRIVE THE BRAKES BECAME VERY WEAK. WHEN I CHECKED THE BRAKE FLUID IT WAS EMPTY. I REFILLED IT AND STARTED CHECKING FOR LEAKS. I FOUND THAT BOTH THE FRONT AND REAR BRAKE LINES WE FRACTURED BECAUSE OF THE PRESSURE DURING THE PANIC STOP CAUSING THE RUSTED L…
07/10/2015 · Airbags
TL* THE CONTACT OWNS A 1999 GMC SONOMA. THE CONTACT STATED THAT THE AIR BAG WARNING INDICATOR ILLUMINATED WHILE DRIVING OVER UNLEVELED LAND. THE CONTACT WAS UNABLE TO DETERMINE THE ORIGIN OF THE FAILURE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 180,000.
06/19/2015 · Electrical system
TL* THE CONTACT OWNS A 1999 GMC SONOMA. WHILE DRIVING 72 MPH ON THE HIGHWAY, THE VEHICLE LOST ALL POWER AND THE POWER STEERING FAILED. AFTER THE VEHICLE STALLED, ALL THE LIGHTS ILLUMINATED ON THE INSTRUMENT PANEL. THE VEHICLE WAS TOWED TO A DEALER WHERE IT WAS DIAGNOSED THAT THE IGNITION SWITCH NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFA…
01/25/2013 · Brakes
BRAKE LINE HYDRAULIC FAILURE OF HARD STEEL LINE. THE LINE THAT BROKE GOES TO THE BACK WHEELS ALONG THE FRAME. *TR
04/29/2011 · Fuel system
MY 1999 GMC SONOMA HAS HAD A FAULTY FUEL GAUGE SINCE THE VEHICLE WAS PURCHASED. IT WAS TAKEN INTO JIM CAUSLEY'S PONTIAC/GMC IN CLINTON TOWNSHIP MI ONCE FOR WARRANTY REPAIRS BUT THE PROBLEM WAS NEVER FIXED. SERVICE REP INFORMED ME THAT IT WAS CAUSED BY A BAD VEHICLE GROUND. PROBLEM STILL PERSISTS TO THIS DAY. THE ONLY WAY I CAN AVOID RUNNING OUT OF GAS IS TO…
11/04/2009 · Body / structure
WHILE STEPPING OFF OF TAILGATE, BOTH CABLES SNAPPED AND THE TAILGATE FELL OFF OF PICKUP. NO BROKEN BONES, BUT BUMPS AND SCRAPES. CABLES ARE SEALED, EXCEPT FOR THE ENDS, WHERE WATER MUST HAVE GOTTEN INTO THEM AND CORRODED THE CABLE FROM THE INSIDE. *TR
01/05/2009 · Engine
I HAVE ENCOUNTERED SEVERAL DIFFERENT CHEVY/GMC VEHICLES THAT ARE EXPERIENCING A LAGGING START AND IN SOME CASES NO START WITHOUT A BOOST. MY SONOMA HAS THE LAG AND I HAVE A FEW FRIENDS THAT HAVE BLAZERS AND FULL SIZE TRUCKS AS WELL. THE VARIATION OF ENGINE SIZES THAT ARE AFFECTED HAS ME PERPLEXED. I HAVE ATTEMPTED TO RUN CODES WITH NO FAULT RESULTS. THIS OC…