2003 GMC Sierra 2500 Electrical system Problems
- Complaints
- 36about this part
- Share
- 23%of 160 total for the year
- Median mileage
- 92,000miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 36 complaints about the electrical system of the 2003 GMC Sierra 2500, 23% of the 160 complaints for this model year. Where a mileage was given, the median is 92,000 miles. 2 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Blower motor resistor does not operate. Upon inspection, harness and final stage are damaged due to excessive heat. I need to replace both components because I fear it will cause a fire. Many posts on the same thing. Why is there nothing done about this? My bmw had same issue but it was a recall on their cars. Why is it not a recall on GM? Is it because they are an american car company?”
NHTSA complaint #11193104, filed 2019-04, 180,000 miles“Pulling out of a parking lot on wet pavement my rear truck tires spun a bit and then when I got on the road traveling about 50 MPH my speedometer read 120 MPH! When I came to a complete stop the needle stayed at about 70 MPH. The problem is I don't know how fast I am going, but I can guarantee that it wasn't 120 MPH! :) truck is still not working. Vehicle is a 2003 Gmc 2500hd.”
NHTSA complaint #10153673, filed 2006-03, 53,500 miles“(electrical) as an ongoing issue, the dashboard gauges/indicators (I.e. Tach, speedometer, etc..) will sometimes not register until several minutes after the vehicle has been running (this could be for up to miles) it has not affected vehicle performance to date. (fuel/propulsion system) I have begun having issues where it goes into reduced engine power . Further diagnostic attempts have LED me to believe that it is due to a faulty throttle position sensor (part of the throttle body), tac module, or app assembly (accelerator pedal). …”
NHTSA complaint #10705003, filed 2015-04, 142,000 miles“The instrument cluster has been failing one gauge at the time since 4 years ago, finally it quit all together, I called GM and my local dealership and I was told there was nothing they can do but to charge me for check up and possibly get me a new cluster for 400.00 what a joke. I know GM has been aware of this problem but nothing gets done. What is it going to take to get GM to get this problems serviced with no cost, after all it's their reputation.... I won't buy another GM vehicle.”
NHTSA complaint #10370274, filed 2010-12, 70,000 miles“I have a 2003 Gmc diesel pickup. I have had the vehicle in twice for electrical repairs in the last 9 months. The electrical problems observed include: airconditioner cutting in/out, radio cutting in/out, power windows not working, dash gauges cutting in/out, idiot lights coming on (ABS, brakes, check engine etc). It was repaired once by the dealership at a cost of $500. Now, 9 months later, the vehicle is back in for the exact same problem. The techniciain took it for a ride and had so many problems, he was afraid he wouldn't make it back to the dealership.”
NHTSA complaint #10128745, filed 2005-07, 46,000 milesRelated service bulletins
- 11017252Mar 28, 2025This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.
- 11006621Aug 26, 2024Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which…
- 11002312Jun 6, 2024This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414…
- 10252735Mar 28, 2024This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.
- 10244214Sep 21, 2023This informational bulletin provides information for the IPC odometer programming method quick reference guide.
- 10237671May 19, 2023This 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…
- 10230605Jan 6, 2023This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.
- 10225615Oct 19, 2022This service bulletin provides information on Module Harvesting.
- 10213796May 12, 2022This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the…
- 10174859Apr 27, 2020This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the…
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 5 | 36% |
| 2025 | 1 | 4% |
| 2024 | 33 | 31% |
| 2023 | 6 | 18% |
| 2022 | 12 | 27% |
| 2021 | 6 | 12% |
| 2020 | 13 | 16% |
| 2019 | 9 | 28% |
| 2018 | 7 | 20% |
| 2017 | 6 | 16% |
| 2016 | 9 | 15% |
| 2015 | 11 | 12% |
| 2014 | 4 | 13% |
| 2013 | 3 | 7% |
| 2012 | 4 | 13% |
| 2011 | 9 | 14% |
| 2009 | 7 | 23% |
| 2008 | 3 | 5% |
| 2007 | 5 | 6% |
| 2006 | 4 | 6% |
| 2005 | 42 | 37% |
| 2004 | 48 | 34% |
| 2003 | 36 | 23% |
| 2002 | 1 | 1% |
| 2001 | 4 | 3% |
| 2000 | 3 | 6% |
| 1999 | 2 | 6% |
| 1998 | 1 | 7% |
Other parts of the 2003 GMC Sierra 2500
73 complaintsFuel system
15 complaintsTransmission and drivetrain
13 complaintsSteering
10 complaintsEngine
6 complaintsEngine cooling
5 complaintsBody and structure
5 complaintsSuspension
5 complaintsVehicle speed control
4 complaintsTires
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsEquipment
2 complaints
← All problems reported for the 2003 GMC Sierra 2500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology