Three problems related to windshield wiper/washer have been reported for the 2004 Chevrolet Trailblazer. The most recently reported issues are listed below.
2004 Chevrolet Trailblazer ext- windshield washer unit will not turn off, even with ignition turned off and key removed. Had to remove fuse to shut the system down. Certain 2003 Trailblazer models had recall for this same defect.
Windshield wiper motor will not shut off in 2004 Chevrolet Trailblazer ext. 2003 model year had same problem and was recalled by manufacturer.
The windshield wipers were on all the time. Switching them off did nothing. The wipers still ran.