GM Service Manual Online
For 1990-2009 cars only

Object Number: 1659644  Size: MF

Callout

Component Name

Notice: Refer to Fastener Notice in the Preface section.

Fastener Tightening Specifications: Refer to Fastener Tightening Specifications .

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 Air Conditioning Evaporator Hose Assembly Replacement .
  4. Remove the heater hoses from the heater core. Refer to Heater Hoses Replacement .
  5. Remove the brake pedal bracket assembly. Refer to Brake Pedal Assembly Replacement .
  6. Pull back and reposition the carpet.
  7. Remove the lower instrument panel (I/P) support brace. Refer to Instrument Panel Center Support Bracket Replacement .
  8. Reposition the auxiliary air distribution duct. Refer to Auxiliary Air Distributor Duct Replacement .
  9. Remove the instrument panel carrier. Refer to Instrument Panel Carrier Replacement .
  10. Disconnect the HVAC module assembly electrical connectors.

1

HVAC Module Assembly Nut (Qty: 5)

Tip
Tighten the nuts in sequence.

Tighten
9 N·m (80 lb in)

2

HVAC Assembly Module