GM Service Manual Online
For 1990-2009 cars only

Object Number: 1591669  Size: MF

Callout

Component Name

Preliminary Procedure

  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  3. Remove the evaporator tube from the thermal expansion valve. Refer to Thermal Expansion Valve Replacement .
  4. Remove the heater inlet hose from the heater core. Refer to Heater Inlet Hose Replacement .
  5. Remove the heater outlet hose from the heater core. Refer to Heater Outlet Hose Replacement .
  6. Remove the instrument panel (I/P) tie bar. Refer to Instrument Panel Tie Bar Replacement .
  7. Remove the body control module. Refer to Body Control Module Replacement .
  8. Disconnect the HVAC module assembly electrical connectors.

1

Body Control Module Bracket Nut (Qty: 4)

Notice: Refer to Fastener Notice in the Preface section.

Tighten
2 N·m (18 lb in)

2

Body Control Module Bracket

3

Nut, HVAC Module Assembly (Qty: 5)

Tighten
9 N·m (80 lb in)

4

Module, HVAC Assembly

Tip
Note routing of wiring harness to ensure proper installation.