2003 Chevrolet Trailblazer EXT electrical system problems
Owners reported electrical system problems in 79 complaints for the 2003 Chevrolet Trailblazer EXT, 19% of the complaints on file. It is the 2nd most reported problem area for this model year.
At a glance
- Complaints
- 79 20% of this year's complaints
- Typical mileage
- 83,000 miles 69 complaints with mileage
- Crashes and fires
- 2 and 4
- Injuries and deaths
- 0 and 0
Source: NHTSA owner complaints
When electrical system problems show up
View the numbers
| Mileage | Complaints |
|---|---|
| 0k to 20k miles | 4 |
| 20k to 40k miles | 7 |
| 40k to 60k miles | 5 |
| 60k to 80k miles | 16 |
| 80k to 100k miles | 14 |
| 100k to 120k miles | 6 |
| 120k to 140k miles | 7 |
| 140k to 160k miles | 6 |
| 160k to 180k miles | 1 |
| 180k to 200k miles | 3 |
| 200k+ miles | 0 |
What the data shows
Of the 69 electrical system complaints that report mileage, the median is about 83,000 miles, and 23% were reported before 60,000 miles.
These complaints mention 2 crashes, 4 fires.
What owners wrote
Driving at 40MPH and the truck went up in flames truck showed no warning even drove it app. 300yards to pull over still ran with flames as high as 6 ft no dummy lights came fire was under the truck while driving was warned by another driving heading towards me truck had 85130 miles on it never had no major problems ever this is a brief summary.
Intermittently the speedometer reads from a few MPH high to 70 MPH high. This problem is well documented across the GM product line and is covered in one way or another by GM. But not the trailblazer. Why not?
Other problems reported for the 2003 Chevrolet Trailblazer EXT
- Fuel system 96 complaints
- Transmission 35 complaints
- Wipers, windshield & visibility 28 complaints
- Lighting 25 complaints
- Body & structure 25 complaints
- Drivetrain & axles 18 complaints
- Suspension 16 complaints