2008 GMC Sierra 1500 electrical system problems
31 owner complaints filed with NHTSA name the electrical system on the 2008 GMC Sierra 1500 — 8% of all complaints for this model year.
What owners report
“Odometer Fraud. The contact purchased a 2008 GMC Sierra 1500. The contact discovered a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 126,498. It was later discovered that the mileage on the title was approximately 250,205.”
filed Aug 25, 2025
“Tl* the contact owns a 2008 gmc sierra 1500. The contact stated that there had been a burning odor emitting from within the cabin of the vehicle. Then suddenly the heating system failed without warning. The contact took the vehicle to a certified mechanic who stated that the heater wires that had a…”
filed Jan 19, 2021
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Electrical System problems in other Sierra 1500 years
| Year | Reports | Share |
|---|---|---|
| 2026 Sierra 1500 | 12 | 10% |
| 2025 Sierra 1500 | 25 | 22% |
| 2024 Sierra 1500 | 41 | 11% |
| 2023 Sierra 1500 | 61 | 13% |
| 2022 Sierra 1500 | 82 | 14% |
| 2021 Sierra 1500 | 73 | 13% |
| 2020 Sierra 1500 | 79 | 17% |
| 2019 Sierra 1500 | 95 | 15% |
| 2018 Sierra 1500 | 43 | 14% |
| 2017 Sierra 1500 | 54 | 15% |
| 2016 Sierra 1500 | 54 | 16% |
| 2015 Sierra 1500 | 96 | 13% |
Other reported problem areas on the 2008 GMC Sierra 1500
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.