One problem related to rear window wiper washer switch has been reported for the 2004 Chevrolet Trailblazer. The most recently reported issues are listed below.
The contact owned a 2004 Chevrolet Trailblazer. While at an automated car wash, the driver side window switch short circuited without warning. As a result, flames appeared and engulfed the vehicle. The vehicle was destroyed. A fire report and a police report were filed. Both the contact and the passenger suffered smoke inhalation that required medical attention. The manufacturer was made aware of the failure. The contact was made aware of NHTSA campaign number: 13v248000 (electrical system, visibility); however, the VIN was not included. The failure mileage was 180,000.