You have a door/actuator problem open it up and investigate-could also be the HVAC control module-

BLEND DOOR ACTUATOR
The blend door for all models is actuated by an electric actuator, while the AZC system uses 2 separate actuators to allow the driver and passenger to select individual comfort levels. In the following procedures, service for both types of actuators is covered.

MODE DOOR ACTUATOR
The mode door actuators for vehicles equipped with the standard equipment manual temperature control system are vacuum controlled. The optional Automatic Zone Control (AZC) system uses electric motors to actuate all mode doors. The service procedures for both types of actuators are covered by the following procedures.

RECIRCULATION DOOR ACTUATOR
The recirculation door actuator for vehicles equipped with the standard equipment manual temperature control system is vacuum controlled. The optional Automatic Zone Control (AZC) system uses an electric recirculation door actuator. In the following procedures, service for both types of actuators is covered.

Answered by rasmataz
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