Parking brake
Risk. IF THE PARKING BRAKE DOES NOT HOLD, UNINTENDED VEHICLE MOVEMENT COULD OCCUR, WHICH COULD RESULT IN A CRASH.
NHTSA has logged 206 owner complaints about the 2003 GMC Sierra, most often about the service brakes. It is covered by 6 safety recalls.

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through December 17, 2015. Updated daily. Photo: Bull-Doser, Public domain.
206 complaints grouped by the system owners reported.
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Service brakes | 45 | 5 |
| Service brakes, hydraulic | 38 | 1 |
| Electrical system | 31 | 1 |
| Power train | 29 | 3 |
| Steering | 27 | 0 |
| Vehicle speed control | 12 | 1 |
| Engine and engine cooling | 9 | 1 |
| Structure | 6 | 2 |
| Suspension | 6 | 0 |
| 14 other systems | 34 | 5 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
Risk. IF THE PARKING BRAKE DOES NOT HOLD, UNINTENDED VEHICLE MOVEMENT COULD OCCUR, WHICH COULD RESULT IN A CRASH.
Risk. A LAP PORTION OF THE SEAT BELT ROUTING THAT IS NOT LOW AND SNUG ON THE HIPS CAN ALLOW THE LAP BELT TO RIDE UP ON AN OCCUPANT'S ABDOMEN INSTEAD OF FITTING LOW…
Risk. THE STANDARD REQUIRES CHILD SEAT LOWER ANCHORAGES IN TWO SEATING POSITIONS FOR VEHICLES WITH THREE REAR SEATING POSITIONS.
Risk. ANYONE SITTING OR STANDING ON THE HORIZONTAL SURFACE OF THE TAILGATE WHEN BOTH CABLES FRACTURED COULD BE INJURED BY FALLING FROM THE TAILGATE.
Risk. CONSEQUENTLY, THE VALVE O-RING SEAL MAY FRACTURE.
Risk. IN VEHICLES WITH THIS CONDITION, THE WINDSHIELD MAY NOT BE RETAINED IN ACCORDANCE WITH THE SAFETY STANDARD DURING A VEHICLE CRASH.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with GMC.
99kmiles, median
Based on the odometer reading in 44 service brakes complaints. 52% were reported before 100,000 miles.
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the Sierra median. How we score
2003 GMC Sierra Crew Cab in NHTSA's New Car Assessment Program. Photos are from NHTSA's crash tests.
Federal investigations that included the 2003 GMC Sierra, and the recalls they led to.
Recent service brakes complaints filed with NHTSA, shortened. Personal details are removed.
EXITING OFF FREEWAY RAMP IN INDIANAPOLIS BRAKE PEDAL WENT TO THE FLOOR WITHOUT NOTICE AND NO BRAKE FLUID LOSS, NEARLY CRASHED CROSSING 5 LANES OF CROSS TRAFFIC JUST LUCKY I WASN'T BROADSIDED BY CROSS TRAFFIC. I RECEIVED NO NOTICE OF HAZARD FROM GM, NO RECALL AND ONLY LEARNED OF THIS PROBLEM ONCE…
I WAS APPROACHING A STOP LIGHT DRIVING ON A 4 LANE 55 MPH SPEED ZONE. AS I WAS APPROACHING THE STOP LIGHT I STARTING PRESSING ON THE BRAKE PEDAL. THE PEDAL HAD NO RESISTANCE IT KEPT GOING TO THE FLOOR. I STARTED PUMPING THE PEDAL TRYING TO SLOW MY TRUCK DOWN, NO USE. I PUSHED PEDAL ALL THE WAY TO…
TL* THE CONTACT OWNS A 2003 GMC SIERRA. WHILE DRIVING AT 60 MPH, THE BRAKE PEDAL WAS DEPRESSED BUT TOOK A LONGER DISTANCE TO STOP THE VEHICLE. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC MULTIPLE TIMES WHO DIAGNOSED THAT THE BRAKE LINES NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED; HOWEVER,…
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.