GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 LaCrosse 🢒 HVAC 🢒 Heating, Ventilation, and Air Conditioning 🢒 Heater Core Cover Replacement

Removal Procedure
  1. Remove the right hand (RH) instrument panel closeout/insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Right Side.
  2. Remove the left hand (LH) instrument panel closeout/insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Left Side.
  3. Remove the floor carpet. Refer to Front Floor Panel Carpet Replacement.
  4. Remove the communication interface module. Refer to Communication Interface Module Replacement.
  5. Remove the rear floor air outlet duct from the holes in the floor reinforcement.
  6. Disconnect the rear floor air outlet duct from the heater air outlet cover.
  7. Remove the rear floor air outlet duct.

    8. Object Number: 1197427 Size: SH
  8. Remove the heater air outlet cover screws (2).
  9. Remove the heater air outlet cover heat stakes (1) with a small chisel.
  10. Remove the heater air outlet cover from the HVAC module assembly.

    11. Object Number: 1197437 Size: SH
  11. Remove the heater core cover screws (2).
  12. Remove the heater core cover heat stakes (1) with a small chisel.
  13. Remove the heater core cover from the HVAC module assembly.

Installation Procedure
  1. From the inside of the heater core cover, drill the dimples adjacent to the heat stakes using a 5.5 mm (7/32 in) drill bit.

    2. Object Number: 1197437 Size: SH
  2. Install the heater core cover to the HVAC module assembly.

    3. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the heater core cover screws (2).

    4. Tighten
    Tighten all screws to 1.5 N·m (13 lb in).

  4. From the inside of the heater air outlet cover, drill the dimples adjacent to the heat stakes using a 5.5 N·m (7/32 in) drill bit.

    5. Object Number: 1197427 Size: SH
  5. Install the heater air outlet cover.
  6. Install the heater air outlet cover screws (2)

    7. Tighten
    Tighten the screws to 1.5 N·m (13 lb in).

  7. Connect the rear floor air outlet duct to the heater air outlet cover.
  8. Install the rear floor air outlet duct to the holes in the floor reinforcement.
  9. Install the communication interface module. Refer to Communication Interface Module Replacement.
  10. Install the floor carpet. Refer to Front Floor Panel Carpet Replacement.
  11. Install the RH instrument panel closeout/insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Left Side.
  12. Install the LH instrument panel closeout/insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Right Side.