Air Door Actuator on 2003 Chevrolet Trailblazer

Wher do I locate it and repair

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1 answer 2 comments
Which actuator air door, recirculate, temp, mode?
Defrost air all the time
You need the Mode Door actuator. On the drivers side of a/c heater box. Can be removed if you reach above the gas pedal. Experienced person only takes 15 minutes.