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 MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 658 (ENGINE COOLING SYSTEM)REPAIR INSTRUCTIONSCOOLANT HEATER REPLACEMENT (3.1 L)INSTALLATION PROCEDURE

2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8

Installation Procedure

2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Installation Procedure

WARNING: This page is about a different car, the 2003 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

Apply GM P/N 12346004
(Canadian P/N 10953480) or the equivalent to the following:
- The engine block heater seal
- The cleaned surface of the engine block heater hole
Position the engine coolant heater element at the 3 o'clock position (2).
Install the engine coolant heater.
Final installed position between 2 o'clock (1) and 4 o'clock (3) is acceptable.

NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the engine coolant heater bolt.
Tighten

Tighten the bolt to 2 N.m (18 lb in).

Fig 1: Positioning Engine Coolant Heater Element At 3 O'Clock Position
Courtesy of GENERAL MOTORS CORP.
Connect the engine coolant heater cord to the engine coolant heater.
Lower the vehicle.
Fill the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM .

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.