2005 GMC Sierra 2500 electrical system problems
42 owner complaints filed with NHTSA name the electrical system on the 2005 GMC Sierra 2500 — 37% of all complaints for this model year.
What owners report
“1). Dash light stays on constantly and reads SERVICE AIR BAG. This was checked out at an auto repair shop. If air bag doesn't respond, it could be fatal. 2). Check engine light is always on. Was checked out at an auto repair shop and repaired on 10/19/2021. 3). Right engine exhaust manifold is…”
filed Dec 23, 2023
“Tl* the contact owns a 2005 gmc sierra. The contact stated that while the vehicle was parked and turned off the fog lamps activated independently. While inspecting the vehicle it was discovered that the driver side dashboard had melted and a burning odor was present inside the cabin of the vehicle…”
filed Feb 3, 2020
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.
23-NA-001 · Service Bulletin/Repair Instructions · issued Mar 28, 2025
Electrical System problems in other Sierra 2500 years
| Year | Reports | Share |
|---|---|---|
| 2024 Sierra 2500 | 31 | 32% |
| 2023 Sierra 2500 | 5 | 17% |
| 2022 Sierra 2500 | 12 | 29% |
| 2021 Sierra 2500 | 6 | 12% |
| 2020 Sierra 2500 | 12 | 16% |
| 2019 Sierra 2500 | 9 | 28% |
| 2018 Sierra 2500 | 7 | 20% |
| 2017 Sierra 2500 | 6 | 16% |
| 2016 Sierra 2500 | 9 | 15% |
| 2015 Sierra 2500 | 11 | 12% |
| 2014 Sierra 2500 | 4 | 13% |
| 2013 Sierra 2500 | 3 | 7% |
Other reported problem areas on the 2005 GMC Sierra 2500
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.