One problem related to front suspension hub has been reported for the 2002 Chevrolet Trailblazer. The most recently reported issues are listed below.
The outside mirrors on both sides reposition themselves randomly. This usually occurs when the key is inserted in the ignition. The dealer has disconnected the memory module of the computer and the problem persists. The drivers side seat will occationally reposition itself. This usually occurs when the key is placed in the ignition. The radio will change channels while driving down the road. I am presently engaged in a texas lemon law proceeding to attempt to get Chevrolet to re-purchase the automobile.