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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 INSTRUCTIONSENGINE FLYWHEEL CLEANING & INSPECTION
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8

Engine Flywheel Cleaning & Inspection

2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Engine Flywheel Cleaning & Inspection
WARNING: This page is about a different variant/trim than selected.
  1. Clean the engine flywheel (1 or 2) in cleaning solvent.
  2. Dry the engine flywheel with compressed air.

    Important:  Do not attempt to repair the welded areas, if present, that retain the ring gear to the engine flywheel plate. Always install a NEW engine flywheel.

  3. Inspect the engine flywheel, automatic transmission, if equipped, for the following:
    • Stress cracks around the engine flywheel-to-torque converter bolt hole locations (1)
    • Missing balance weights
    • Stress cracks around the engine flywheel-to-crankshaft bolt hole locations (2 or 3)
    • Welded areas that retain the ring gear onto the engine flywheel for cracking (4), if present
    • Damaged ring gear teeth (5)
  4. Inspect the engine flywheel, manual transmission, if equipped, for loose or improperly installed flywheel weights, if applicable. A properly installed flywheel weight should be installed until flush or below flush with the face of the engine flywheel.
    Fig 1: Flywheel Weight
    G02502904Courtesy of GENERAL MOTORS CORP.
  5. Inspect the engine flywheel, manual transmission, if equipped, for the following:
    • Pitted friction surface (1)
    • Scoring or grooves (2)
    • Rust or other surface damage (3)
    • Damaged ring gear teeth (4)
    • Loose or improperly positioned ring gear. The ring gear has an interference fit onto the engine flywheel and the ring gear should be positioned completely flat against the flange of the engine flywheel.
    6. Fig 2: Inspecting Engine Flywheel (M/T)
    G02502905Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

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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.