What breaks most · 1994 to 2026 model years
GMC Sierra 2500 problems by year
Owners have filed 1,811 safety complaints with NHTSA about the GMC Sierra 2500 across model years 1994 to 2026. Three years stand out: 2003 for brakes (hydraulic) complaints, 2004 for electrical system complaints and 2001 for brakes (hydraulic) complaints. The quietest years are 1994, 2010 and 1997.
- Years to check closely: 2003, 2004, 2001
- Fewest complaints: 1994, 2010, 1997
- Complaints on file
- 18111994 to 2026, all trims
- Worst year
- 2003160 complaints
- Crashes reported
- 7943 fires · 68 injuries · 4 deaths
- Typical failure mileage
- 63kMedian where owners gave mileage
- Recall campaigns
- 117Across the years shown
Complaints by model year
Raw filings with NHTSA, not adjusted for how many were sold.
| Model year | Complaints | Crashes | Recalls | Most-reported component |
|---|---|---|---|---|
| 1 | 0 | 0 | Brakes (hydraulic) (1) | |
| 14 | 1 | 4 | Brakes (hydraulic) (7) | |
| 15 | 0 | 3 | Brakes (hydraulic) (7) | |
| 36 | 3 | 2 | Brakes (hydraulic) (13) | |
| 48 | 3 | 3 | Brakes (hydraulic) (23) | |
| 134 | 11 | 5 | Brakes (hydraulic) (44) | |
| 134 | 10 | 4 | Brakes (hydraulic) (44) | |
| 160 | 7 | 3 | Brakes (hydraulic) (43) | |
| 143 | 4 | 4 | Electrical system (48) | |
| 115 | 4 | 4 | Electrical system (42) | |
| 66 | 4 | 3 | Brakes (24) | |
| 83 | 2 | 3 | Air bags (49) | |
| 63 | 4 | 3 | Air bags (39) | |
| 31 | 1 | 5 | Electrical system (7) | |
| 10 | 0 | 5 | Unknown or other (4) | |
| 63 | 1 | 4 | Air bags (20) | |
| 31 | 1 | 3 | Air bags (8) | |
| 46 | 1 | 3 | Unknown or other (14) | |
| 30 | 2 | 2 | Unknown or other (7) | |
| 89 | 5 | 6 | Exterior lighting (26) | |
| 59 | 1 | 5 | Steering (14) | |
| 37 | 2 | 6 | Brakes (8) | |
| 35 | 0 | 5 | Engine (8) | |
| 32 | 0 | 7 | Electrical system (9) | |
| 73 | 1 | 9 | Powertrain and transmission (22) | |
| 51 | 4 | 6 | Powertrain and transmission (12) | |
| 43 | 1 | 3 | Electrical system (12) | |
| 31 | 1 | 1 | Powertrain and transmission (20) | |
| 102 | 2 | 4 | Electrical system (31) | |
| 26 | 2 | 1 | Steering (7) | |
| 10 | 1 | 1 | Electrical system (3) |
What fails on the 2003 GMC Sierra 2500
| Component | Share of complaints | Filings | Crashes | Parts for this job |
|---|---|---|---|---|
| Brakes (hydraulic)Brake pads, rotors and calipers | 27% |
43 | 3 | Shop brakes (hydraulic) parts for the 2003 GMC Sierra 2500 |
| Electrical systemAlternators, starters and ignition | 23% |
36 | 0 | Shop electrical system parts for the 2003 GMC Sierra 2500 |
| BrakesBrake pads, rotors and calipers | 18% |
28 | 1 | Shop brakes parts for the 2003 GMC Sierra 2500 |
| Powertrain and transmissionTransmission parts | 8% |
13 | 0 | Shop powertrain and transmission parts for the 2003 GMC Sierra 2500 |
| SteeringPower steering pumps, racks and hoses | 6% |
10 | 1 | Shop steering parts for the 2003 GMC Sierra 2500 |
| EngineEngine gaskets and seals | 4% |
6 | 0 | Shop engine parts for the 2003 GMC Sierra 2500 |
| Fuel System, Diesel | 4% |
6 | 0 | — |
| Engine and coolingRadiators, thermostats and cooling | 3% |
5 | 1 | Shop engine and cooling parts for the 2003 GMC Sierra 2500 |
One complaint can name more than one component, so shares add to more than 100%. "Unknown or other" is NHTSA's uncategorized bucket and is shown but never ranked.
In owners' words
Complaint narratives as filed with NHTSA, trimmed for length.
-
Front brake lines failed on boat ramp on 9/15/2010 rear brake lines failed on 7/20/2011, transmission lines fail on 5/10/2012 i am sure gas lines are next. Truck is a complete rust bucket underneath.
-
The instrument panel cluster gauges don't always work. We were on freeway when we noticed speedometer had failed as well as fuel gauge , temp gauge all gauges inoperative. This is third time cluster panel is being replaced; first two under warranty third time we had to pay $204.
-
First power steering and hydroboost lines rusts through. Brake lines ruptures in crash due to accident. GM needs to recall their trucks and fix the problem of there faulty rustly brake and power steering system lines.
How to read this page
Every figure comes from the National Highway Traffic Safety Administration's public complaint database, which holds every safety-related defect complaint filed by owners since 1995. We refresh it monthly and count each complaint once per component it names. Data through September 6, 2026.
NHTSA only accepts safety-related complaints. Rattles, paint, infotainment bugs and other annoyances are under-reported here, so this page is a map of what fails in ways owners consider dangerous, not a full reliability score.
Counts are raw. Use the year-over-year shape and the component mix, not the absolute numbers. Where a component maps to parts we stock, the row links to that category filtered to the year you are viewing. Air bag and seat belt complaints link to the recall checker instead, because those repairs are almost always covered.
Common questions
Which GMC Sierra 2500 years have the most problems?
By NHTSA complaint volume, 2003, 2004, 2001 carry the most filings on the GMC Sierra 2500. The 2003 alone has 160 complaints, led by brakes (hydraulic).
What is the most common GMC Sierra 2500 problem?
On the 2003 model year, the most-reported component is brakes (hydraulic) with 43 complaints. The table above lists the top components for every year.
At what mileage do GMC Sierra 2500 problems start?
The median mileage at failure across all GMC Sierra 2500 complaints that include mileage is about 63,000 miles. Older model years skew higher; the per-year figure is in the "at a glance" card.
Are these complaints verified?
No. NHTSA publishes complaints as submitted and does not investigate individual filings. Patterns across hundreds of complaints are meaningful; a single one is not.