GM Service Manual Online
For 1990-2009 cars only

Each of the following service procedures may require programming or setup procedures to be performed on the Auxiliary HVAC Control Module or Auxiliary HVAC actuators.

Auxiliary HVAC Control Module Replacement

If the Auxiliary HVAC Control Module is replaced, the following procedure must be performed: Reprogram the Auxiliary HVAC Control Module. Refer to Service Programming System (SPS)

Auxiliary HVAC Control Module Reprogramming

Do not reprogram the Auxiliary HVAC control module unless directed by a service procedure or a service bulletin.

Reprogram the Auxiliary HVAC Control Module. Refer to Service Programming System (SPS) .

Auxiliary Actuator Replacement

If an auxiliary actuator is replaced, the following procedure must be performed: Re-Calibrating Actuators. Refer to Actuator Recalibration .