Installation Procedure

WARNING: This page is about a different car, the 2006 GMC Sierra, 2006 GMC Cab & Chassis Sierra, 2006 Chevrolet Silverado, and 2006 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Install the mode cable to the IP carrier.
Connect the mode cable to the heater/ventilation module.

Fig 1: Connecting Mode Cable To Heater/Ventilation Module
Courtesy of GENERAL MOTORS CORP.
Install the heater control assembly.
Install the radio. Refer to Radio Replacement in Entertainment.