Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 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: Mode Cable And Heater/Ventilation Module
Courtesy of GENERAL MOTORS CORP.
Install the heater control assembly.
Install the radio. Refer to Radio Replacement in Entertainment.