GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Buick
🢒
2009
🢒
Lucerne
🢒
Engine
🢒
Engine Cooling
🢒 Coolant Heater Replacement
Coolant Heater Replacement V6
Removal Procedure
Drain the cooling system. Refer to
Cooling System Draining and Filling
.
Disconnect the engine coolant heater cord (2) from the engine coolant heater.
Remove the engine coolant heater.
Clean the engine coolant heater opening.
Installation Procedure
Caution:
Refer to
Fastener Caution
in the Preface section.
Apply sealer to the threads of the engine coolant heater, if necessary. Refer to
Adhesives, Fluids, Lubricants, and Sealers
.
Install the engine coolant heater and tighten to
60 N·m (44 lb ft)
.
Connect the engine coolant heater cord (2) to the engine coolant heater.
Lower the vehicle.
Fill the cooling system. Refer to
Cooling System Draining and Filling
.
Inspect for leaks.