GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Disable the SIR system. Refer to SIR Disabling and Enabling.
  2. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.
  3. Remove the heater hoses from the heater core. Refer to Heater Inlet Hose Replacement and Heater Outlet Hose Replacement.
  4. Remove the air conditioning lines from the thermal expansion valve. Refer to Liquid Line Replacement and Evaporator Outlet Hose Replacement.

  5. Object Number: 1868605  Size: SH
  6. Remove the nuts (1) securing the HVAC module to the mod plate.
  7. Remove the front seats. Refer to Front Seat Replacement - Bucket.
  8. Remove the front floor console. Refer to Front Floor Console Replacement.
  9. Remove the front floor console extension panel assembly. Refer to Front Floor Console Extension Panel Replacement.
  10. Remove the transmission control bracket. Refer to Transmission Control Bracket Replacement for the 4T45-E transaxle or Transmission Control Bracket Replacement for the 6T70/6T75 transmission.
  11. Remove the windshield pillar garnish moldings. Refer to Windshield Pillar Garnish Molding Replacement.
  12. Remove the front floor carpet retainers. Refer to Front Carpet Retainer Replacement.

  13. Object Number: 1874784  Size: SH
  14. Remove the brake pedal bracket to tie bar bolt (1).
  15. Remove the steering column assembly. Refer to Steering Column Replacement.

  16. Object Number: 2084719  Size: SH
  17. Remove the nuts (1) securing the instrument tie bar to the mod plate.
  18. Remove the instrument panel cluster assembly. Refer to Instrument Cluster Replacement.
  19. Remove the radio. Refer to Radio Replacement.
  20. Important: Note the location and routing of the electrical harness prior to disconnecting or removing in order to ensure the proper reinstallation.

  21. Disconnect the instrument panel wiring harness connectors and ground straps at the following locations.
  22. • At both windshield pillars
    • At both "H" pillars
    • At the steering column bracket
  23. Remove the instrument panel electrical center. Refer to Instrument Panel Wiring Harness Junction Block Replacement.

  24. Object Number: 1868606  Size: SH
  25. Remove the instrument panel bolt covers (1).
  26. Remove the instrument panel bolts (2).
  27. With the aid of an assistant remove the instrument panel assembly from the vehicle.
  28. Once the assembly is outside the vehicle, adequately support the assembly to avoid damage.

Installation Procedure

Important: Installing the instrument panel assembly to the vehicle requires 3 people. Two within the passenger compartment and one in the engine compartment.

  1. The two people within the passenger compartment will be supporting the assembly, while aligning it to the vehicle.
  2. Slowly push the assembly forward while the person in the engine compartment guides the heater core tubes, thermal expansion valve and the HVAC module locating studs through the openings in the mod plate.
  3. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1868606  Size: SH
  4. Install the instrument panel bolts (2).
  5. Tighten
    Tighten the bolt to 20 N·m (15 lb ft).

  6. Install the instrument panel bolt covers (1).
  7. Install the instrument panel electrical center. Refer to Instrument Panel Wiring Harness Junction Block Replacement.
  8. Connect the instrument panel electrical connectors and ground straps at the following locations.
  9. • At the steering column bracket
    • At both "H" pillars
    • At both windshield pillars
  10. Install the radio. Refer to Radio Replacement.
  11. Install the instrument panel cluster assembly. Refer to Instrument Cluster Replacement.

  12. Object Number: 2084719  Size: SH
  13. Install the instrument panel tie bar to mod plate nuts (1).
  14. Tighten
    Tighten the nuts to 25 N·m (18 lb ft).

  15. Install the steering column. Refer to Steering Column Replacement.

  16. Object Number: 1874784  Size: SH
  17. Install the brake pedal bracket to instrument panel tie bar bolt (1).
  18. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).

  19. Install the front carpet retainers. Refer to Front Carpet Retainer Replacement.
  20. Install the windshield pillar garnish moldings. Refer to Windshield Pillar Garnish Molding Replacement.
  21. Install the transmission control bracket. Refer to Transmission Control Bracket Replacement for the 4T45-E transaxle or Transmission Control Bracket Replacement for the 6T70/6T75 transmission.
  22. Install the front floor console extension panel assembly. Refer to Front Floor Console Extension Panel Replacement.
  23. Install the front floor console. Refer to Front Floor Console Replacement.
  24. Install the front seats. Refer to Front Seat Replacement - Bucket.

  25. Object Number: 1868605  Size: SH
  26. Install the HVAC module nuts (2).
  27. Tighten
    Tighten the bolt to 4 N·m (35 lb in).

  28. Install the air conditioning lines to the thermal expansion valve. Refer to Liquid Line Replacement and Evaporator Outlet Hose Replacement.
  29. Install the heater hoses to the heater core. Refer to Heater Inlet Hose Replacement and Heater Outlet Hose Replacement.
  30. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.
  31. Enable the SIR system. Refer to SIR Disabling and Enabling.
  32. Reprogram the HVAC system, radio and body control module. Refer to Control Module References.

Removal Procedure

  1. Disable the SIR system. Refer to SIR Disabling and Enabling.
  2. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.
  3. Remove the heater hoses from the heater core. Refer to Heater Inlet Hose Replacement and Heater Outlet Hose Replacement.
  4. Remove the air conditioning lines from the thermal expansion valve. Refer to Liquid Line Replacement and Evaporator Outlet Hose Replacement.

  5. Object Number: 1868605  Size: SH
  6. Remove the nuts (1) securing the HVAC module to the mod plate.
  7. Remove the front seats. Refer to Front Seat Replacement - Bucket.
  8. Remove the front floor console. Refer to Front Floor Console Replacement.
  9. Remove the front floor console extension panel assembly. Refer to Front Floor Console Extension Panel Replacement.
  10. Remove the transmission control bracket. Refer to Transmission Control Bracket Replacement for the 4T45-E transaxle or Transmission Control Bracket Replacement for the 6T70/6T75 transmission.
  11. Remove the windshield pillar garnish moldings. Refer to Windshield Pillar Garnish Molding Replacement.
  12. Remove the front floor carpet retainers. Refer to Front Side Door Opening Floor Carpet Retainer Replacement.

  13. Object Number: 1874784  Size: SH
  14. Remove the brake pedal bracket to tie bar bolt (1).
  15. Remove the steering column assembly. Refer to Steering Column Replacement.

  16. Object Number: 2084719  Size: SH
  17. Remove the nuts (1) securing the instrument tie bar to the mod plate.
  18. Remove the instrument panel cluster assembly. Refer to Instrument Cluster Replacement.
  19. Remove the radio. Refer to Radio Replacement.
  20. Note: Note the location and routing of the electrical harness prior to disconnecting or removing in order to ensure the proper reinstallation.

  21. Disconnect the instrument panel wiring harness connectors and ground straps at the following locations.
  22. • At both windshield pillars
    • At both "H" pillars
    • At the steering column bracket
  23. Remove the instrument panel electrical center. Refer to Instrument Panel Wiring Harness Junction Block Replacement.

  24. Object Number: 1868606  Size: SH
  25. Remove the instrument panel bolt covers (1).
  26. Remove the instrument panel bolts (2).
  27. With the aid of an assistant remove the instrument panel assembly from the vehicle.
  28. Once the assembly is outside the vehicle, adequately support the assembly to avoid damage.

Installation Procedure

Note: Installing the instrument panel assembly to the vehicle requires 3 people. Two within the passenger compartment and one in the engine compartment.

  1. The two people within the passenger compartment will be supporting the assembly, while aligning it to the vehicle.
  2. Slowly push the assembly forward while the person in the engine compartment guides the heater core tubes, thermal expansion valve and the HVAC module locating studs through the openings in the mod plate.
  3. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1868606  Size: SH
  4. Install the instrument panel bolts (2).
  5. Tighten
    Tighten the bolt to 20 N·m (15 lb ft).

  6. Install the instrument panel bolt covers (1).
  7. Install the instrument panel electrical center. Refer to Instrument Panel Wiring Harness Junction Block Replacement.
  8. Connect the instrument panel electrical connectors and ground straps at the following locations.
  9. • At the steering column bracket
    • At both "H" pillars
    • At both windshield pillars
  10. Install the radio. Refer to Radio Replacement.
  11. Install the instrument panel cluster assembly. Refer to Instrument Cluster Replacement.

  12. Object Number: 2084719  Size: SH
  13. Install the instrument panel tie bar to mod plate nuts (1).
  14. Tighten
    Tighten the nuts to 25 N·m (18 lb ft).

  15. Install the steering column. Refer to Steering Column Replacement.

  16. Object Number: 1874784  Size: SH
  17. Install the brake pedal bracket to instrument panel tie bar bolt (1).
  18. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).

  19. Install the front carpet retainers. Refer to Front Side Door Opening Floor Carpet Retainer Replacement.
  20. Install the windshield pillar garnish moldings. Refer to Windshield Pillar Garnish Molding Replacement.
  21. Install the transmission control bracket. Refer to Transmission Control Bracket Replacement for the 4T45-E transaxle or Transmission Control Bracket Replacement for the 6T70/6T75 transmission.
  22. Install the front floor console extension panel assembly. Refer to Front Floor Console Extension Panel Replacement.
  23. Install the front floor console. Refer to Front Floor Console Replacement.
  24. Install the front seats. Refer to Front Seat Replacement - Bucket.

  25. Object Number: 1868605  Size: SH
  26. Install the HVAC module nuts (2).
  27. Tighten
    Tighten the bolt to 4 N·m (35 lb in).

  28. Install the air conditioning lines to the thermal expansion valve. Refer to Liquid Line Replacement and Evaporator Outlet Hose Replacement.
  29. Install the heater hoses to the heater core. Refer to Heater Inlet Hose Replacement and Heater Outlet Hose Replacement.
  30. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.
  31. Enable the SIR system. Refer to SIR Disabling and Enabling.
  32. Reprogram the HVAC system, radio and body control module. Refer to Control Module References.