1999 Chevrolet Cutaway 7.4 JFACTORY OEM SERVICE PROCEDURE

Removal Procedure

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the front floor kick-up panel. Refer to KICK-UP PANEL REPLACEMENT - FRONT FLOOR in Interior Trim.
  2. Remove the cover from the IP electrical center.
  3. Remove the HVAC CON (HVAC controls) MiniFuse® #27 from the IP electrical center.
  4. Remove the IP accessory trim plate. Refer to TRIM PLATE REPLACEMENT - INSTRUMENT PANEL (I/P) ACCESSORY in Instrument Panel, Gages and Console.
  5. Remove the screws retaining the HVAC control module.
    6. Fig 1: Removing HVAC Control Module
    G01418842Courtesy of GENERAL MOTORS CORP.
  6. Pull the HVAC control module out from the IP center support bracket to access the electrical and vacuum connectors.
  7. Disconnect the electrical connectors (1) from the HVAC control module.
    8. Fig 2: Disconnecting Connectors From HVAC Control Module
    G01418843Courtesy of GENERAL MOTORS CORP.
  8. Disconnect the vacuum harness connectors (2) from the HVAC control module.
  9. Remove the HVAC control module from the vehicle.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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