Buy 2005 Gmc Sierra 2500 HD SLT Extended Cab Pickup Fleetside 6.6L Duramax V8 DIESEL A/T 4WD Radiator - OEM Gmc Part # 25687288

Seal. Radiator.
Seal used on the Radiator. Air. Panel. Side.

Radiator Air Seal

Fits Deville

Radiator - Repair or Replace
Typical symptoms for a failed radiator include both an overheating engine and a coolant leak. But some radiator failures can also result in burned or dark transmission fluid. If the cooling system in your 2005 GMC Sierra 2500 HD needs attention, contact a factory-trained GMC technician.