Shop 2006 Cadillac Escalade EXT HVAC Heater Core. Ext & crew cab. Silverado, Sierra Hybrid; w/o Aux Temp - OEM Cadillac Part # 25906908 (15887363)

HVAC Heater Core.
Exc.Dual Zone Climate Control. HVAC Heater Core.

HVAC Heater Core

Fits Sierra 1500, Sierra 2500 HD, Sierra 3500 HD, Silverado

Ext & crew cab. Silverado, Sierra Hybrid; w/o Aux Temp Controls. Silverado, Sierra; w/o Aux Temp Controls.
Heater Core - Repair or Replace
Your vehicle’s heater core handles hot water from your engine’s cooling system and transfers the heat to the cabin in the form of comforting heat from your vents. A failed heater core can leak that water—which is also called coolant or antifreeze—onto the floor on the passenger side. If your needs to have the heater core replaced, it's a job best left to a trained technician.