Question about 2004 Chevrolet TrailBlazer
Try to reinitialize the HVAC system by turning all controls to their off position or fully CCW position, then disconnect the battery for a few minutes. Reconnect battery and allow the HVAC to initialize, don't move any controls for at least a minute. If this does not work, you probably have a stuck blend door or a bad door actuator.
Posted on Apr 13, 2011
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Posted on Jan 02, 2017
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