GM Service Manual Online
For 1990-2009 cars only

HVAC Control Module Replacement LHD

  1. Remove the glove box assembly. Refer to Instrument Panel Compartment Replacement

  2. Object Number: 1958818  Size: SH
  3. Locate the HVAC control module (1) on the HVAC, passenger side near the A pillar.
  4. Disconnect the electrical connectors (2) from the HVAC control module (1).

  5. Object Number: 1958821  Size: SH
  6. Remove the HVAC control module (2) to the HVAC unit retaining screws (1).
  7. Remove HVAC control module (2).

Installation Procedure

  1. Install the HVAC control module (2).

  2. Object Number: 1958821  Size: SH
  3. Install the HVAC control module (2) to the HVAC unit retaining screws (1).

  4. Object Number: 1958818  Size: SH
  5. Install the electrical connectors (2) to the HVAC control module (1).
  6. Install the glove box assembly. Refer to Instrument Panel Compartment Replacement
  7. Important: The HVAC control module is provided as a spare part in "Plant Mode". Configuration and Calibration will have to be down loaded from Tech - 2 and the electric actuator operating ranges will have to be learned. Failure to carry out the configuration will result in DTC’s being set and non function of the HVAC mode postions.