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Home >> Cadillac >> 2007 >> CTS V8-6.0L >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Cylinder Block Assembly >> Engine Block Heater >> Service and Repair >> Coolant Heater Replacement
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Coolant Heater Replacement



Coolant Heater Replacement (LS2)

Removal Procedure




1. Drain the cooling system. Refer to Draining and Filling Cooling System (GE 47716) Draining and Filling Cooling System (LP1, LY7 Static Fill) Draining and Filling Cooling System (LS2 Static Fill).
2. Remove the tire and wheel, if necessary.
3. Disconnect the engine coolant heater cord from the engine coolant heater.




4. Remove the engine coolant heater.

Important: Take care not to damage the surface of the opening in the engine block.

5. Clean the opening in the engine block, remove any burrs, sealing compound, or paint.

Installation Procedure

Important: The engine coolant heater sealing washer may be reused if not bent, scored or otherwise damaged.




1. Apply a 3.175 mm (0.125 in) bead of sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the engine coolant heater sealing washer.
2. Insert the engine coolant heater.

Notice: Refer to Fastener Notice.

3. Tighten the engine coolant heater.

Tighten the engine coolant heater to 40 N.m (30 lb ft).




4. Install the engine coolant heater cord to the engine coolant heater.
5. Install the tire and wheel, if necessary.
6. Fill the cooling system. Refer to Draining and Filling Cooling System (GE 47716) Draining and Filling Cooling System (LP1, LY7 Static Fill) Draining and Filling Cooling System (LS2 Static Fill).

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