Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2012CORVETTE V8-6.2LREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTENGINECYLINDER BLOCK ASSEMBLYENGINE BLOCK HEATERSERVICE AND REPAIRCOOLANT HEATER REPLACEMENT
2012 Chevrolet Corvette V8-6.2L
Coolant Heater Replacement
2012 Chevrolet Corvette V8-6.2LSECTION Coolant Heater Replacement
Coolant Heater Replacement
Removal Procedure
1. Drain the cooling system. Refer to Cooling System Draining and Filling (GE 47716) Cooling System Draining and Filling (GE 47716)Cooling System Draining and Filling (Static Fill) Cooling System Draining and Filling (Static Fill).
2. Remove the tire and wheel, if necessary. Refer to Tire and Wheel Removal and Installation Service and Repair.
3. Disconnect the engine coolant heater cord from the engine coolant heater.
Note:
Take care not to damage the surface of the opening in the engine block.
4. Remove the engine coolant heater.
5. Clean the opening in the engine block, remove any burrs, sealing compound, or paint.
Installation Procedure
Note:
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.
Caution:
Refer to Fastener Caution Fastener Caution.
3. Tighten the engine coolant heater.
Tighten the engine coolant heater to 40 Nm (30 lb ft).
4. Install the engine coolant heater cord to the engine coolant heater.
5. Install the tire and wheel, if necessary. Refer to Tire and Wheel Removal and Installation Service and Repair.
6. Fill the cooling system. Refer to Cooling System Draining and Filling (GE 47716) Cooling System Draining and Filling (GE 47716)Cooling System Draining and Filling (Static Fill) Cooling System Draining and Filling (Static Fill).
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.