Installation Procedure

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: The key should be in the off position when connecting the HVAC control module electrical connector to ensure proper calibration.

Connect the HVAC control module electrical connector.

Fig 1: View Of HVAC Control Module (Buick)

Courtesy of GENERAL MOTORS CORP.

Install the HVAC control module into the I/P opening.

Fig 2: Locating HVAC Control Module Retaining Screws (Buick)

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the HVAC control module retaining screws.
Tighten: Tighten the screws to 2.5 N.m (22 lb in).
Install the IP cluster trim plate bezel. Refer to Trim Plate Bezel Replacement - Instrument Panel (I/P) Cluster (Aztek) or Trim Plate Bezel Replacement - Instrument Panel (I/P) Cluster (Rendezvous) in Instrument Panel, Gages, and Console.

IMPORTANT: Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating. If interrupted, improper HVAC performance will result.
The engine must be running for proper calibration to occur.

Start and allow the engine to run for a least one minute.