K 1500 Truck 4WD V8-6.5L DSL Turbo VIN S (1999)
Thermostat: Service and Repair
Thermostat Replacement (Gasoline)
REMOVAL PROCEDURE
1. Drain the coolant until the radiator coolant level is below the thermostats. Refer to Draining and Filling Cooling System.
2. For 5.0L and the 5.7L only, remove the following items:
2.1.
The bolts or studs
2.2.
The coolant outlet
2.3.
The thermostat from the housing
2.4.
The gasket, If needed
3. For the 7.4L only, remove the following items:
3.1.
The bolts or studs
3.2.
The coolant outlet
3.3.
The thermostat from the housing
3.4.
The gasket, if needed
4. Clean the thermostat housing and the cooling outlet sealing surfaces.
INSTALLATION PROCEDURE
