One problem related to engine noise has been reported for the 2006 Chevrolet Trailblazer. The most recently reported issues are listed below.
The contact owns a 2006 Chevrolet Trailblazer. The front passenger seat track cover was loose. In addition, the transmission would slip and the engine made a hissing sound while driving between 45-50 mph. The vehicle would drive in reverse and then shift into gear. The vehicle was taken to the dealer three times. When the contact removed his foot from the accelerator pedal, the vehicle would stop and not move again until it reached 5-8 mph (stabilizing track). The master cylinder also failed. When making a left or right turn ,the power steering would make a loud screeching sound. The vehicle was taken to the dealer six times. The dealer confirmed the failures. The current mileage was 49,000 and failure mileage was 13,000.