HVAC Control Module Replacement

WARNING: This page is about a different car, the 2012 GMC Sierra, 2012 GMC Cab & Chassis Sierra, 2012 Chevrolet Silverado, and 2012 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: HVAC Control Module

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedure Remove the instrument panel accessory trim plate. Refer to Instrument Panel Accessory Trim Plate Replacement (with RPO SLT) , Instrument Panel Accessory Trim Plate Replacement (without RPO SLT) . Remove the accessory switch assembly. Refer to Accessory Switch Replacement (without RPO SLT) , Accessory Switch Replacement (with RPO SLT) . 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 (with RPO SLT) , Instrument Panel Accessory Trim Plate Replacement (without RPO SLT) .
Remove the accessory switch assembly. Refer to Accessory Switch Replacement (without RPO SLT) , Accessory Switch Replacement (with RPO SLT) .
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 .