One problem related to engine failure has been reported for the 2006 Chevrolet Trailblazer. The most recently reported issues are listed below.
I recently had my 06 chevy Trailblazer towed to the gm garage due to it having an engine failure while my wife was driving it. Diagnoses is a broken valve spring in cylinder #1. Repairs costs $752. Gm is not willing to help me with the repairs due to it is out of warranty. Car only has 56,000 miles on it and to have a valve spring snap in half while under normal driving conditions is ridiculous and a huge safety concern. Looking for something to be done about this since no one from gm seems to care.