Mode Valve Actuator 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 Mode Actuator & Screws

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 knee bolster. Refer to Knee Bolster Replacement (Except Cadillac) , Knee Bolster Replacement (Cadillac) . Remove the air outlet duct - floor LH. Refer to Floor Air Outlet Duct Replacement - Left Side . Disconnect the electrical connector from the mode actuator.
1	Mode Actuator Screw (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 1.6 N.m (14 lb in)
2	Mode Actuator Procedure Re-calibrate the mode actuator. Refer to Actuator Recalibration . NOTE: Mode actuator cam is now accessible. Apply Dielectric Nyogel 760G grease to the electrical connector. Dispense grease on the connector to cover all holes in the connector.

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 knee bolster. Refer to Knee Bolster Replacement (Except Cadillac) , Knee Bolster Replacement (Cadillac) .
Remove the air outlet duct - floor LH. Refer to Floor Air Outlet Duct Replacement - Left Side .
Disconnect the electrical connector from the mode actuator.

Mode Actuator Screw (Qty: 2)

CAUTION:

Refer to Fastener Caution .

Tighten
1.6 N.m (14 lb in)

Mode Actuator
Procedure
Re-calibrate the mode actuator. Refer to Actuator Recalibration .

NOTE:

Mode actuator cam is now accessible.
Apply Dielectric Nyogel 760G grease to the electrical connector. Dispense grease on the connector to cover all holes in the connector.