One problem related to transmission solenoid has been reported for the 2005 Chevrolet Trailblazer. The most recently reported issues are listed below.
The contact owns a 2005 Chevrolet Trailblazer. When the accelerator pedal was depressed, the vehicle failed to shift out of first gear. The vehicle was towed to the contact's residence where an independent mechanic stated that the shift control solenoid sensor needed to be replaced. The vehicle was not repaired. The manufacturer was notified. The approximate failure mileage was 120,000.