We don't have a lot of Chevrolet Trailblazer EXT transmission problems on file — feel free to add yours here. The most common Trailblazer EXT transmission problems occur at 129,000 miles. Click on a year below.

Worst Transmission Problems
vehicle lost speed while driving 2004 Chevrolet Trailblazer EXT
vehicle would not shift into gear 2004 Chevrolet Trailblazer EXT
transmission failure 2004 Chevrolet Trailblazer EXT