One problem related to engine has been reported for the 2007 Chevrolet Trailblazer. The most recently reported issues are listed below.
The contact owns a 2007 Chevrolet Trailblazer. While driving approximately 25 mph on normal road conditions, there was a low power response when the accelerator pedal was depressed. Immediately, the vehicle accelerated unexpectedly. The traction warning indicator illuminated on the instrument panel and remained lit until the engine was turned off. The vehicle was taken to the authorized dealer for inspection and they stated that the failure was related to the throttle body freezing. The throttle body was replaced. The failure recurred and the throttle body was replaced again. The failure mileage was 21,000 and current mileage was 35,950. Updated 1/8/09 the trac light illuminated, the right front window would not roll up. Updated 01/14/09.