GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
2001
🢒
Envoy - 4WD
🢒
Engine
🢒
Engine Cooling
🢒 Radiator Drain Cock Replacement
Removal Procedure
Raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle
in General Information.
Drain the cooling system. Refer to
Cooling System Draining and Filling
.
Turn the drain cock counterclockwise until the metal pin on the drain cock is aligned with the opening slot.
Pull the drain cock straight out of the radiator.
Installation Procedure
Align the metal pin on the drain cock with the opening slot on the radiator.
Push the drain cock into the radiator slot.
Turn the drain cock clockwise until fully seated.
Fill the cooling system. Refer to
Cooling System Draining and Filling
.