Colorado 2WD V8-5.3L (2009)
Thermostat Housing: Service and Repair
Engine Coolant Thermostat Housing Replacement (With LH8) (5.3L)
Removal Procedure
1. Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill) (See: Service and Repair)Cooling System Draining and
Filling (Vac N Fill) (See: Service and Repair).
2. Remove the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement (See: Engine/Tune-up and Engine Performance
Checks/Air Cleaner Housing/Air Cleaner Fresh Air Duct/Hose/Service and Repair).
3. Reposition the radiator outlet hose clamp (1) at the water pump inlet.
4. Remove the radiator outlet hose (2) from the water pump inlet.
5. Remove the water pump inlet bolts (1).
6. Remove the water pump inlet from the water pump.
7. Remove and discard the water pump inlet seal.
