GM Service Manual Online
For 1990-2009 cars only

Each of the following service procedures requires programming or setup procedures to be performed on the HVAC control module.

HVAC Control Module Replacement

If the HVAC control module is replaced, the following procedure must be performed:

Re-Calibrating Actuators--Refer to Actuator Recalibration .

Actuator Replacement

If an actuator is replaced, the following procedure must be performed:

Re-Calibrating Actuators--Refer to Actuator Recalibration .