GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove instrument panel compartment assembly. Refer to Instrument Panel Compartment Replacement.

  2. Object Number: 2027818  Size: SH
  3. Remove instrument panel wiring harness (2) from instrument panel tie bar (1).
  4. Disconnect electrical connectors.


    Object Number: 2027821  Size: SH
  5. Remove instrument panel tie bar (2).
  6. Remove 4 instrument panel tie bar bolts (3, 4).

    Remove 2 instrument panel tie bar nuts (1).


    Object Number: 2027609  Size: SH
  7. Remove air conditioning module wiring harness.
  8. Disconnect electrical connectors.

  9. Remove heater core. Refer to Heater Core Replacement.
  10. Remove blower motor. Refer to Blower Motor Replacement.
  11. Remove heater and blower and air conditioning control module. Refer to Heater and Blower and Air Conditioning Control Module Replacement.

  12. Object Number: 2027829  Size: SH
  13. Remove heater and air conditioning evaporator case (2) from heater and blower and air conditioning control module (1).
  14. Remove 10 heater and air conditioning evaporator case bolts (3).

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 2027829  Size: SH
  1. Install heater and air conditioning evaporator case (2) to heater and blower and air conditioning control module (1).
  2. Install 10 heater and air conditioning evaporator case bolts (3) and tighten to  XX N·m (XX lb in).

  3. Install heater and blower and air conditioning control module. Refer to Heater and Blower and Air Conditioning Control Module Replacement.
  4. Install blower motor. Refer to Blower Motor Replacement.
  5. Install heater core. Refer to Heater Core Replacement.

  6. Object Number: 2027609  Size: SH
  7. Install air conditioning module wiring harness.
  8. Connect electrical connectors.


    Object Number: 2027821  Size: SH
  9. Install instrument panel tie bar (2).
  10. Install 4 instrument panel tie bar bolts (3 4) and tighten to  22 N·m (16 lb in).

    Install 2 instrument panel tie bar nuts (1) and tighten to  XX N·m (XX lb in).


    Object Number: 2027818  Size: SH
  11. Install instrument panel wiring harness (2) from instrument panel tie bar (1).
  12. Connect electrical connectors.

  13. Install instrument panel compartment assembly. Refer to Instrument Panel Compartment Replacement.