gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Thermostat Housing Crossover Replacement|Page 3080 > < Thermostat Housing Crossover Replacement|Page 3078
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Thermostat: Service and Repair
Thermostat Replacement

REMOVAL PROCEDURE 

1. Remove the air cleaner and the duct assembly.
2. Partially drain the coolant.
3. Remove the coolant recovery reservoir.
4. Disconnect the radiator hose from the thermostat housing.

5. Remove the bolts attaching the thermostat housing to the thermostat.
6. Remove the thermostat housing.
7. Remove the thermostat.
8. Clean the gasket mating surfaces.

INSTALLATION PROCEDURE  

NOTICE:  Refer to Coolant Addition Notice in Service Precautions.

Thermostat Housing Crossover Replacement|Page 3080 > < Thermostat Housing Crossover Replacement|Page 3078