Auxiliary Mode Valve Actuator Replacement (Behr)

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: Locating Auxiliary Mode Valve Actuator

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
CAUTION: In order to avoid actuator damage, DO NOT apply power to the actuator when it is not installed in the HVAC module. Preliminary Procedure Remove the right rear quarter trim panel. Refer to Rear Quarter Trim Panel Replacement - Right Side (Extended Wheelbase) , Rear Quarter Trim Panel Replacement - Right Side (Standard Wheelbase) . Reposition auxiliary HVAC module inward to gain access to the mix door actuator. Disconnect the electrical connector from the mix door actuator.
1	Mix Door Actuator Screws (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 2.5 N.m (16 lb in)
2	Auxiliary Mix Door Actuator Procedure Re-calibrate the mode actuator. Refer to Actuator Recalibration .

Callout

Component Name

CAUTION:

In order to avoid actuator damage, DO NOT apply power to the actuator when it is not installed in the HVAC module.

Preliminary Procedure

Remove the right rear quarter trim panel. Refer to Rear Quarter Trim Panel Replacement - Right Side (Extended Wheelbase) , Rear Quarter Trim Panel Replacement - Right Side (Standard Wheelbase) .
Reposition auxiliary HVAC module inward to gain access to the mix door actuator.
Disconnect the electrical connector from the mix door actuator.

Mix Door Actuator Screws (Qty: 2)

CAUTION:

Refer to Fastener Caution .

Tighten
2.5 N.m (16 lb in)

Auxiliary Mix Door Actuator
Procedure
Re-calibrate the mode actuator. Refer to Actuator Recalibration .