This is the vacuum hose for the heater and air conditioning controls in 2003-2009 Chevrolet Kodiak and GMC Topkick C4500, C6500, C7500, and C8500 trucks. This vacuum hose controls the heater and A/C system. This part comes with the vacuum hose Tee fitting also. Replace your old part 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 # 15012979

Other GM Part # 15733271

Item is number 4 in the GM diagram. Also includes number 5 (15733271) in the diagram.