One problem related to transmission not go into gear has been reported for the 2003 Chevrolet Trailblazer. The most recently reported issues are listed below.
The contact owns a 2003 Chevrolet Trailblazer. The contact stated that while driving approximately 55 mph, the transmission stopped and there was a sudden increase in engine rpms. The vehicle became stuck in drive and would not switch gears. The vehicle was towed to an independent mechanic who diagnosed that the transmission failed. The vehicle had not been repaired. The manufacturer was not aware of the failure. The approximate failure mileage was 95,000. Updated 10/24/2014.