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CJ2 HVAC Recirculation Door Operation In Manual Mode - keywords HVAC manual ac door mode recirculation CJ2

Subject:CJ2 HVAC Recirculation Door Operation In Manual Mode

Models:2004-2007 Buick Rainier
2002-2007 Chevrolet Trailblazer and Trailblazer EXT
2002-2007 GMC Envoy, Envoy XL and Envoy XUV
2002-2004 Oldsmobile Bravada
2005-2007 Saab 97x



The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:

While operating the CJ2 Automatic HVAC in manual mode, bi-level or vent, some customers may comment that the recirculation mode will not stay ON for longer than 10 minutes and/or default to the OFF position after the ignition is cycled from On to Off and back On again.

Recommendation/Instructions:

This is the normal operation of the CJ2 automatic HVAC system and no parts should be replaced.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.