IllustrationSPEEDOMETER IN MY 2003 GMC SIERRA HAS GONE ERRATIC. ZERO TO 120 MPH FLUCTUATIONS, STICKS. *JB
2003 GMC Sierra 2500
Owner reports · Recalls · Investigations
More warning signs than most Sierra 2500 years
Owner complaints for the 2003 GMC Sierra 2500 are substantially higher than the model-year median of 46.
About this comparison →How this year compares
Owner complaints by model year
Compare all Sierra 2500 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
140–25K
2825–50K
2950–75K
2075–100K
34100–150K
17150K+
142 reports with mileage · 18 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.
- Service Brakes, Hydraulic. Review the 43 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 36 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 28 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
7 crash reports4 fire reports4 injury reports
Equipment complaints
2 reportsI HAVE A 2003 GMC 2500 HD DURAMAX DIESEL. MY COMPLAINT IS THE AIR CONDITIONING DOESN'T SEEM TO COOL VERY WELL. I HAD A 2002 MODEL AND IT COOLED ALOT BETTER. I AM NOT SURE WHAT WAS CHANGE OTHER THAN THIS IS A DUAL ZONE SYSTEM BUT IS NOT FOR THE BETTER. I WOULD LIKE IF GMC WOULD CHANGE IT BACK TO THE WAY IT WAS IN 2002, ESPECIALL…
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I HAVE A 2003 GMC 2500 HD DURAMAX DIESEL. MY COMPLAINT IS THE AIR CONDITIONING DOESN'T SEEM TO COOL VERY WELL. I HAD A 2002 MODEL AND IT COOLED ALOT BETTER. I AM NOT SURE WHAT WAS CHANGE OTHER THAN THIS IS A DUAL ZONE SYSTEM BUT IS NOT FOR THE BETTER. I WOULD LIKE IF GMC WOULD CHANGE IT BACK TO THE WAY IT WAS IN 2002, ESPECIALLY FOR THOSE WHO LIVE IN THE SOUTHERN STATES. I AM A PROFESSIONAL AND WHEN I CLIMB INTO MY TRUCK ON A HOT DAY I SOAK A PERFECTLY GOOD SHIRT WAITING ON IT TO COOL DOWN IN THE CAB. THIS IS PATHETIC TO THINK THAT GMC'S SLOGAN IS "PROFESSIONAL GRADE" NOT AS FAR AS THE AC! *NLM
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.