One problem related to front suspension lower ball joint has been reported for the 2004 Chevrolet Trailblazer. The most recently reported issues are listed below.
Took for inspection and would not pass inspection due to the ball joint on passenger. Took to chevy dealer they said nothing was wrong. Called gm safety defect to report ball joint. Gm said nothing is wrong. Gm safety defect made apt for second oppion. Second dealer said nothing again. Took back for safety inspection again, they refuse to pass inspection due to the ball joint.