This is the transfer case shift control module for 2005-2009 Chevrolet Kodiak and GMC Topkick C4500 trucks. This module controls the transfer case shift control. Replace your old, faulty module with this brand new factory original part from GM at a fraction of the dealer price.

New. Never Installed. OEM part. Bulk Overstock

GM part # 12577018 (number on the item)

Alternate GM Part # 12576126

Item is number 9 in the GM diagram