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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 721 (HVAC Systems - Automatic) >> Repair Instructions >> HVAC Control Module Replacement >> Installation Procedure
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Installation Procedure

WARNING: This page is about a different car, the 2006 GMC Sierra, 2006 GMC Cab & Chassis Sierra, 2006 Chevrolet Silverado, and 2006 Chevrolet Cab & Chassis Silverado. 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 electrical connectors to ensure proper calibration.
  1. Connect the electrical connectors to the HVAC control module.
  2. Install the HVAC control module into the instrument panel, ensuring that the HVAC control module retaining tabs lock into place.
    Fig 1: Installing HVAC Control Module
    GM659558Courtesy of GENERAL MOTORS CORP.
    3. NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  3. Install the screws from the HVAC control module.

    Tighten:  Tighten the screws to 1.9 N.m (17 lb in).

  4. Install the instrument panel accessory trim plate. Refer to Bezel Replacement - Instrument Panel (I/P) Cluster in Instrument Panel, Gages and Console.
    5. IMPORTANT: Do not adjust any controls on the HVAC control module while the HVAC control module is calibrating.
    If interrupted improper HVAC performance will result.
  5. Start the vehicle and let run for one minute.
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