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Engine Flywheel Cleaning and Inspection (Automatic Transmission)

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Clean the engine flywheel in solvent.
    2. CAUTION: Refer to Safety Glasses Caution in Cautions and Notices.
  2. Dry the engine flywheel with compressed air.
  3. Inspect the engine flywheel for the following conditions:
    • Stress cracks around the engine flywheel-to-torque converter mounting bolt hole locations (1) and/or engine flywheel-to-crankshaft (2, 3)
      • IMPORTANT: Do not attempt to repair the welded areas that retain the ring gear to the engine flywheel plate. Install a new engine flywheel.
    • Cracks at welded areas that retain the ring gear onto the engine flywheel (4)
    • Damaged or missing ring gear teeth (5)
    4. Fig 1: Flywheel Inspection Areas (Automatic Transmission)
    GM381965Courtesy of GENERAL MOTORS CORP.
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