Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Install the right temperature door (2) to the upper HVAC module case (1).

Fig 1: Removing Right Temperature Door To Upper HVAC Module Case (Visteon)
Courtesy of GENERAL MOTORS CORP.
Install the upper HVAC module case (1) to the lower HVAC module case (2).

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the screws to the HVAC module.
Tighten: Tighten the screws to 2 N.m (18 lb in).
Install the wiring harness to the HVAC module.
Install the lower recirculation housing (1) to the HVAC module (2).

Fig 2: Upper HVAC Module Case And Lower HVAC Module Case
Courtesy of GENERAL MOTORS CORP.
Install the screws to the lower recirculation housing (1).
Tighten: Tighten the screws to 2 N.m (18 lb in).

Fig 3: View Of Upper And Lower Recirulation Housing
Courtesy of GENERAL MOTORS CORP.
Install the upper recirculation housing (1) to the HVAC module (2).

Fig 4: View Of Upper Recirculation Housing And HVAC Module Assembly

Courtesy of GENERAL MOTORS CORP.

Install the screws to the upper recirculation housing (1).
Tighten: Tighten the screws to 2 N.m (18 lb in).
Install the air distribution housing (1) to the HVAC module (2).

Fig 5: Removing/Installing Air Distribution Housing (Visteon)
Courtesy of GENERAL MOTORS CORP.
Install the screws to the air distribution housing (1).
Tighten: Tighten the screws to 2 N.m (18 lb in).
Install the wiring harness to the air distribution housing (1).
Install the mode actuator (4) to the HVAC module (1).

Fig 6: View Of Mode Actuator
Courtesy of GENERAL MOTORS CORP.
Install the screws to the mode actuator (4).
Tighten: Tighten the screws to 2 N.m (18 lb in).
Connect the electrical connector (3) to the mode actuator (4).
Install the HVAC module. Refer to HVAC Module Assembly Replacement .