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 VARIANT/TRIMSECTION 11 (ENGINE MECHANICAL - 4.3L UNIT REPAIR)REPAIR INSTRUCTIONSEXHAUST MANIFOLD INSTALLATION - LEFT

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

Exhaust Manifold Installation - Left

2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Exhaust Manifold Installation - Left

WARNING: This page is about a different variant/trim than selected.

Install the NEW exhaust manifold gaskets.

Fig 1: Exhaust Manifold Gaskets
Courtesy of GENERAL MOTORS CORP.
Install the exhaust manifold.
Install the spark plug wire shields.
If reusing the fasteners, apply threadlock GM P/N United States 12345493, GM P/N Canada 10953488, or equivalent, to the threads of the exhaust manifold bolts and stud.
Install the exhaust manifold bolts and stud.
1. 5.1. Tighten the exhaust manifold bolts and stud on the first pass to 15 N.m (11 Lb ft).
2. 5.2. Tighten the exhaust manifold bolts and stud on the final pass to 30 N.m (22 Lb ft).
Install the spark plug wires to the spark plug wire retainers.
Install the spark plug wires onto the spark plugs.

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.