There are 8 owner-reported body & structure complaints for the 2005 GMC Sierrain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL* THE CONTACT OWNS A 2005 GMC SIERRA 2500. THE CONTACT STATED HE REPLACED ALL THE BRAKE LINES ON THE VEHICLE AND ALSO STATED THAT THE BODY FRAME OF THE VEHICLE WAS CORRODED. THE VEHICLE WAS TAKEN TO AN INDEPENDENCE MECHANIC WHERE ALL THE CORRODED BRAKE LINES WERE REPLACE. THE VEHICLE WAS NOT DIAGNOSED. A DEALER WAS NOT CONTACTED. THE MANUFACTURER HAD NOT BEEN INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 61,000.
DRIVING HOME FROM LITTLE LEAGUE GAME WITH MY 7 YR OLD, CAME INTO TRAFFIC IN TOWN AND MY BRAKES WENT MUSHY, WITHIN A COUPLE MINUTES WENT FROM MUSHY TO 5% BRAKING. MADE IT HOME ABOUT 2 MILES BY PUMPING QUICKLY JUST ENOUGH TO SLOWLY STOP AT THE END OF DRIVE. WHEN EXITING THE VEHICLE, THERE WAS A POOL OF BRAKE FLUID EATING THROUGH MY ASPHALT DRIVEWAY. ALL BRAKE FLUID HAD DRAINED OUT COMPLETELY RUSTED / CORROSION AREA OF ALL BRAKE LINES BY BUNDLE UNDER DRIVERS SEAT. MY MECHANIC, SAYS OTHER AREAS ARE ALMOST AS BAD IN OTHER AREAS IN THE REAR. NOW I'M LOOKING AT 500+ IN LINE REPAIRS. *TR
UNDER CARRIAGE OF TRUCK IS COMPLETELY RUSTED. FRAME, BRAKE LINES, LEAF SPRINGS, BASICALLY EVERYTHING. FUEL TANK LOOKS AS IF MIGHT BREAK OFF AND FALL TO GROUND AT ANY MOMENT AND LEAF SPRING SHACKLES LOOK AS IF MIGHT BREAK AND SPLIT TRUCK IN HALF. ALL DANGEROUS AND SHOULD BE RECALLED. *TR
TL*THE CONTACT OWNS A 2005 GMC SIERRA. THE CONTACT STATED THAT THE SPARE TIRE CABLE WOULD NOT RELEASE THE TIRE AFTER NUMEROUS ATTEMPTS. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE THE SPARE TIRE HOUSING UNIT WAS REMOVED IN ORDER TO CUT THE CABLE HARNESS WHICH ALLOWED THE TIRE TO DETACH. THE CONTACT WAS IN THE PROCESS OF REPLACING THE SPARE TIRE HOUSING UNIT. THE FAILURE MILEAGE WAS 79,000. THE VIN WAS UNAVAILABLE.
BROKEN FRAME ON THE FRONT BY THE FRONT SHOCK MOUNT I HAVE SEEN SEVERAL ON OTHER 2500 AND 3500 SERIES GMC AND CHEVROLET MODELS I HAVE HAD TO WELD AND PLATE THE FRAMES ON 2 OF MY OWN TRUCKS. *TR
TAILGATE LATCH FAILURE, ALLOWS TAILGATE TO DROP DOWN WITH VIBRATION OR SLIGHT JARRING. THIS RESULTS IN LETTING CARGO FLY OUT ONTO HIGHWAY. CAN CAUSE AN ACCIDENT AND OR DEATHS. *TR
THERE IS A PIECE OF PLASTIC UNDER THE CENTER CONSOLE WHICH PROTRUDES ABOVE THE ACCELERATOR PEDAL. ESPECIALLY WHEN WARM, THE PLASTIC PIECE PROTRUDES FAR ENOUGH TO CATCH MY SHOE AND HOLD IT ON THE ACCELERATOR WHEN I TRY TO BRAKE. I DID HAVE A CRASH WHEN SOMEONE STOPPED QUICKLY IN FRONT OF ME, AND I LATER HAD A NEAR MISS WHEN I WAS TRYING TO BRAKE.
2005 GMC SIERRA EXPERIENCING PROBLEMS WITH THE DOORS.*MR THE CONSUMER HAS TO USE EXCESSIVE FORCE TO GET THE FRONT DOORS TO CLOSE. THE REAR DOORS CLOSE PROPERLY. *NM
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026