2003 Chevrolet Trailblazer Ext electrical system problems
77 owner complaints filed with NHTSA name the electrical system on the 2003 Chevrolet Trailblazer Ext — 25% of all complaints for this model year.
What owners report
“One by one things have been going out and not working. First the car would not start all the time with the key, then the a/c stoped working, next was the fuel pump, then the injectors. I checked everything it could be. I was driving with my kids down the highway when my car just died lost power…”
filed May 30, 2018
“When driving for 30 to 45 mins all the instruments on dash start sticking and reading wrong information. In the picture my car is parked .”
filed Feb 23, 2018
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Vehicle 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, 2024This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and…
24-NA-098 · Service Bulletin/Repair Instructions · issued Jun 6, 2024This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.
10-08-45-001H · Service Bulletin/Repair Instructions · issued Mar 28, 2024
Electrical System problems in other Trailblazer Ext years
| Year | Reports | Share |
|---|---|---|
| 2006 Trailblazer Ext | 41 | 22% |
| 2004 Trailblazer Ext | 145 | 56% |
| 2002 Trailblazer Ext | 14 | 14% |
Other reported problem areas on the 2003 Chevrolet Trailblazer Ext
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.