Grand Prix V6-191 3.1L VIN M SFI (1998)
Thermostat: Service and Repair
Thermostat Bypass Pipes Replacement
REMOVAL PROCEDURE
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Tools Required
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J 38185 Hose Clamp Pliers
1. Drain the engine coolant from the cooling system. Refer to Draining and Filling Cooling System in Service and Repair.
2. Carefully disconnect the throttle body air inlet duct.
3. Remove the LH engine mount strut. Refer to Engine Mount Strut Replacement (Left) in Engine Mechanical - 3.1L.
4. Remove the spark plugs wires at the left bank. Refer to Spark Plug Wire Harness Replacement (3100 L82 (VIN M)) in Starting and Charging.
5. Use the J 38185 in order to reposition the radiator inlet hose clamp at the thermostat housing.
6. Disconnect the inlet hose at the thermostat housing.
7. Disconnect the heater outlet hose from the thermostat bypass pipe (2).
8. Disconnect the throttle body inlet and outlet hoses from the thermostat bypass pipe (1).