2003 Chevrolet Trailblazer Ext power train problems
49 owner complaints filed with NHTSA name the power train on the 2003 Chevrolet Trailblazer Ext — 16% of all complaints for this model year.
What owners report
“Driving down road on the way to hospital and trailblazer made a loud clunk. Then started making a whirring noise. Finished driving slowly to hospital as not to mess anything else up. Pulled in and parked. Got ready to leave hospital and had no reverse only foward.”
filed Jul 24, 2017
“My key will not come out of the ignition I had to unscrew and remove the bottom of my steering to push the button also all of my instrument gauge do not work including the speedometer and all gauges so I never know my temperature or fuel level, oil pressure they all are not working properly my…”
filed May 1, 2017
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This…
24-NA-141 · Service Bulletin/Repair Instructions · issued Jul 24, 2024
Power Train problems in other Trailblazer Ext years
| Year | Reports | Share |
|---|---|---|
| 2006 Trailblazer Ext | 6 | 3% |
| 2004 Trailblazer Ext | 17 | 7% |
| 2002 Trailblazer Ext | 20 | 20% |
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.