GM Service Manual Online
For 1990-2009 cars only

Object Number: 1663975  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. Remove the HVAC module assembly. Refer to HVAC Module Assembly Replacement .
  2. Remove the auxiliary blower motor assembly from the HVAC module. Refer to Auxiliary Blower Motor Replacement .
  3. Remove the blower motor assembly from the HVAC module. Refer to Blower Motor Replacement .
  4. Remove the left hand floor air outlet duct. Refer to Floor Air Outlet Duct Replacement - Left Side .
  5. Remove the heater core. Refer to Heater Core Replacement .
  6. Important: Leave the recirculation actuator attached to the air inlet housing assembly.

  7. Remove the air inlet housing assembly. Refer to Air Inlet Assembly Replacement .
  8. Remove the thermal expansion valve from the evaporator core. Refer to Thermal Expansion Valve Replacement .
  9. Remove the blower motor resistor. Refer to Blower Motor Resistor Replacement .
  10. Remove the auxiliary blower motor resistor. Refer to Auxiliary Blower Motor Resistor Replacement .

1

Blower Case Clip (Qty: 2)

2

Air Distributor Case Screw (Qty: 6)

Tighten
1.5 N·m (14 lb in)

3

Heater and Air Conditioning Case Assembly

4

Air Distributor Case Assembly

5

Air Distributor Case Assembly Screw (Qty: 8)

Tighten
1.5 N·m (14 lb in)

6

Air Distributor Case - Left

7

Air Distributor Case - Right

8

Air Distributor Case - Center

9

Mode Valve Assembly