Two problems related to defogger have been reported for the 2004 Chevrolet Trailblazer. The most recently reported issues are listed below.
The contact owns a 2004 Chevrolet trail blazer. The contact stated that the heating and air conditioning fan control would not work until it reached level four of the five settings. In addition, the speedometer was inoperable. The vehicle was not repaired. The failure mileage was 90,000.
: the contact stated the headlights dim without warning. The problem occurs intermittently and has increased over time. Upon inspection the dealership determined the problem is related to the defroster in the ac compressor. The dimming of the headlights is normal for the vehicle. Updated 02/24/06.