2003 GMC Sierra problems & reliability
206 owner complaints filed with NHTSA for the 2003 GMC Sierra, alongside 6 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
4 complaints report injuries (5 injured, 2 deaths reported).
Federal crash records (FARS 2020–2023): 2003 GMC Sierra vehicles were involved in 120 fatal crashes with 63 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Service Brakes → | 45 | 22% |
| Service Brakes, Hydraulic → | 38 | 18% |
| Electrical System → | 31 | 15% |
| Power Train → | 29 | 14% |
| Steering → | 27 | 13% |
| Vehicle Speed Control → | 12 | 6% |
| Engine and Engine Cooling | 9 | 4% |
| Structure | 6 | 3% |
| Suspension | 6 | 3% |
| Air Bags | 5 | 2% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
All 24 reported components →Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Among the 151 complaints that included a usable odometer reading, the median reported incident mileage was 59,000 miles (middle 50% between 22,534 and 95,900 miles).
Complaints by incident year
What owners report
“Tl* the contact owns a 2003 gmc sierra. When inserting the key into the ignition, the seat moved forward and pinned the contact to the dashboard. The failure recurred numerous times. The vehicle was taken to the dealer where it was diagnosed that the motor drive software needed to be updated. The vehicle was repaired…”
Seats · filed Dec 17, 2015
“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 researching on web. I…”
Service Brakes · filed Oct 28, 2015
“Tl* the contact owns a 2003 gmc sierra. While accelerating from a stop sign,the contact's vehicle collided with another vehicle head on. As a result, the contact crashed into another vehicle. The front end was completely damaged and the air bags failed to deploy. Due to the failure of the air bags not deploying, the…”
Air Bags · filed Sep 23, 2015
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Brake line corrosion failure
Preliminary Evaluation PE10010 · opened Mar 30, 2010 · closed Jan 5, 2011
- PARKING BRAKE FAILURE
Defect Petition DP05009 · opened Dec 20, 2005 · closed May 31, 2006
- PARKING BRAKE FAILURE
Engineering Analysis EA04011 · opened Apr 9, 2004 · closed May 10, 2005 · led to recall 05V161000
- TAILGATE CABLE BREAKAGE
Engineering Analysis EA04005 · opened Feb 19, 2004 · closed Sep 28, 2004 · led to recall 04V129000
- PARKING BRAKE FAILURE
Preliminary Evaluation PE03057 · opened Dec 8, 2003 · closed Apr 9, 2004
Technical service bulletins
580 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2003 GMC Sierra. The 10 most recent:
This technical bulletin provides a procedure to lube the rear leaf springs on vehicles with the condition of a squeak noise originating from the rear of the vehicle.
06-03-09-004H · Service Bulletin/Repair Instructions · issued Jul 17, 2017
This Preliminary Information communication provides information to the technician about vehicles that may have slack in one of the tailgate cables. Technician should not replace any parts for this concern. Please…
PIT3227M · Service Bulletin/Repair Instructions · issued Feb 8, 2017
This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn.
PIT3665E · Service Bulletin/Repair Instructions · issued Jan 31, 2017
This Preliminary Information communication provides information to the technician about vehicles that may have an issue when using Bluetooth voice recognition with an iPhone. Technician should work with the customer to…
PIC5953A · Service Bulletin/Repair Instructions · issued Feb 23, 2016
This informational bulletin provides information on Part Restriction and Ordering Process Information for OnStar Vehicle Communication Interface Modules (VCIM) (GMNA Only)
03-08-46-004R · Service Bulletin/Repair Instructions · issued Jan 27, 2016
This informational bulletin provides technicians with information regarding automatic transmission oil cooler flow test essential tool J-45096 TransFlow®.
02-07-30-052J · Service Bulletin/Repair Instructions · issued May 29, 2015
This informational bulletin provides dealership personnel with information on flexible fuel vehicles (FFVs) and the usage of E85 fuel in GM vehicles.
05-06-04-035E · Service Bulletin/Repair Instructions · issued May 27, 2015
This informational bulletin provides information on a GM of Canada OnStar® cellular communication upgrade.
15-08-44-001A · Service Bulletin/Repair Instructions · issued May 15, 2015
This Preliminary Information communication provides information to the technician about vehicle that may have an OnStar system that has progression tones when pressing the blue or red button. Technician will need to…
PIC4310L · Service Bulletin/Repair Instructions · issued Apr 17, 2015
This informational bulletin provides information on communication with OnStar® module after Canadian cellular upgrade.
15-08-73-001 · Service Bulletin/Repair Instructions · issued Mar 2, 2015
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2003 GMC Sierra has 6 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2003 GMC Sierra?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Among complaints with usable mileage, the median reported incident mileage was 59,000 miles. This does not predict when a particular vehicle will develop a problem.