2004 Chevrolet Blazer electrical system problems
10 owner complaints filed with NHTSA name the electrical system on the 2004 Chevrolet Blazer — 20% of all complaints for this model year.
What owners report
“The problem is with the ignition. The key does not release after it has been turned to the off position. The car must be turned back on and often moved in reverse then forward a number of times before the key will release from the ignition . *tr”
filed Jul 1, 2014
“Tl* the contact owns a 2004 chevrolet blazer. The contact stated that the key became lodged in the ignition switch. The vehicle was taken to the dealer. The techncian diagnosed that the ignition was defective and needed to be replaced. The manufacturer was made aware of the failure. The vehicle was…”
filed Jul 1, 2014
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8…
PIP4723J · Service Bulletin/Repair Instructions · issued Oct 25, 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 modules need updating and then proceed to…
General Communication · Service Campaign · issued Aug 26, 2024
Electrical System problems in other Blazer years
| Year | Reports | Share |
|---|---|---|
| 2025 Blazer | 7 | 27% |
| 2024 Blazer | 7 | 17% |
| 2023 Blazer | 6 | 15% |
| 2022 Blazer | 11 | 26% |
| 2021 Blazer | 37 | 30% |
| 2020 Blazer | 71 | 34% |
| 2019 Blazer | 59 | 32% |
| 2006 Blazer | 2 | 11% |
| 2003 Blazer | 9 | 12% |
| 2002 Blazer | 21 | 9% |
| 2001 Blazer | 40 | 12% |
| 2000 Blazer | 49 | 8% |
Other reported problem areas on the 2004 Chevrolet Blazer
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.