HVAC Control Module Replacement

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2009 GMC Yukon XL, 2009 GMC Yukon, 2009 Chevrolet Tahoe, 2009 Chevrolet Suburban, and 2009 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 (Cadillac) or Instrument Panel Accessory Trim Plate Replacement (Except Cadillac) . Remove the accessory switch assembly. Refer to Accessory Switch Replacement (Except Cadillac) or Accessory Switch Replacement (Cadillac) . Disconnect the electrical connectors.
1	Control Assembly - Heater and Air Conditioning Screw (Qty: 4) CAUTION: Refer to Fastener Caution . Tighten: 1.5 N.m (13 lb in)
2	Heater and Air Conditioning Control Assembly 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 (Cadillac) or Instrument Panel Accessory Trim Plate Replacement (Except Cadillac) .
Remove the accessory switch assembly. Refer to Accessory Switch Replacement (Except Cadillac) or Accessory Switch Replacement (Cadillac) .
Disconnect the electrical connectors.

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

CAUTION: Refer to Fastener Caution .

Tighten: 1.5 N.m (13 lb in)

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