Auxiliary Heater and Air Conditioning Control Module Replacement

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Auxiliary Heater & Air Conditioning Control Module

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedure Remove the roof rear console. Refer to Roof Rear Console Replacement (with DVD) , Roof Rear Console Replacement (w/o DVD)
1	Heater and Air Conditioning Control Assembly Screw (Qty: 4) CAUTION: Refer to Fastener Caution . Tighten 1.5 N.m (13 lb in)
2	Heater and Air Conditioning Control Assembly Procedure Disconnect the electrical connectors from the auxiliary HVAC control module. TIP: HVAC Control Module must be reprogrammed. Refer to Control Module References .