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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 467 (ENGINE EXHAUST SYSTEM)REPAIR INSTRUCTIONSEXHAUST MANIFOLD REPLACEMENT - RIGHTINSTALLATION 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 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

Important:  To assist in installing the exhaust manifold to the engine, the tabs at the bolt holes on a NEW exhaust manifold gasket will hold the bolts and the gaskets in place.

  1. Sub-assemble the bolts, spark plug wire shields, and NEW gaskets to the exhaust manifold.
  2. Ensure that the exhaust manifold bolts are held in place by the tabs on the exhaust manifold gaskets.
    Fig 1: Identifying New Exhaust Manifold Gasket
    G01979410Courtesy of GENERAL MOTORS CORP.
  3. Install the exhaust manifold.
  4. Install the spark plug wire shields.
  5. If reusing the fasteners, apply threadlock GM P/N 12345493 (Canadian P/N 10953488) or equivalent to the threads of the exhaust manifold bolts.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  6. Install the exhaust manifold bolts.

    Tighten 

    1. 6.1. Tighten the exhaust manifold bolts on the first pass to 15 N.m (11 lb ft).
    2. 6.2. Tighten the exhaust manifold bolts on the final pass to 30 N.m (22 lb ft).
  7. Install the spark plug wires to the spark plug wire retainers.
  8. Install the spark plug wires onto the spark plugs.
    Fig 2: Installing Bolt For Oil Level Indicator Tube
    G01979411Courtesy of GENERAL MOTORS CORP.
  9. Raise the vehicle. Refer to JACKING AND LIFTING in General Information.
  10. Connect the exhaust pipe to the exhaust manifold. Refer to Exhaust Manifold Pipe Replacement   .
  11. Lower the vehicle.
  12. Install the bolt for the oil level indicator tube.

    Tighten 

    Tighten the oil level indicator tube bolt to 12 N.m (106 lb in).

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.