HVAC Control Module Replacement

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of HVAC Control Assembly & Screws

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedure Remove the instrument panel accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement (Except Cadillac) or Instrument Panel Accessory Trim Plate Replacement (Cadillac) . Remove the accessory switch assembly. Refer to Accessory Switch Replacement (Except Cadillac) or Accessory Switch Replacement (Cadillac) . Disconnect the electrical connectors.
1	Screw, Control Assembly - Heater and Air Conditioning (Qty: 4) NOTE: Refer to Fastener Notice . Tighten: 1.5 N.m (13 lb in)
2	Control Assembly, Heater and Air Conditioning Tip: The HVAC control module must be reprogrammed. Refer to Control Module References .

Callout

Component Name

Preliminary Procedure

Remove the instrument panel accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement (Except Cadillac) or Instrument Panel Accessory Trim Plate Replacement (Cadillac) .
Remove the accessory switch assembly. Refer to Accessory Switch Replacement (Except Cadillac) or Accessory Switch Replacement (Cadillac) .
Disconnect the electrical connectors.

Screw, Control Assembly - Heater and Air Conditioning (Qty: 4)

NOTE: Refer to Fastener Notice .

Tighten: 1.5 N.m (13 lb in)

Control Assembly, Heater and Air Conditioning
Tip: The HVAC control module must be reprogrammed. Refer to Control Module References .