GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1378998  Size: SH
  1. Remove the HVAC module. Refer to HVAC Module Assembly Replacement.
  2. Remove the heater core pipe bracket screw.
  3. Remove the heater core pipe bracket.

  4. Object Number: 1378992  Size: SH
  5. Remove the heater core out of the HVAC module.

Installation Procedure


    Object Number: 1378992  Size: SH
  1. Install the heater core into the HVAC module.
  2. Install the heater core pipe bracket.
  3. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1378998  Size: SH
  4. Install the heater core pipe bracket screw.
  5. Tighten
    Tighten the screws to 1 N·m (9 lb in).

  6. Install the HVAC module. Refer to HVAC Module Assembly Replacement.