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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Mechanical - 8.1L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Engine Flywheel Cleaning and Inspection (Automatic Transmission)

Engine Flywheel Cleaning and Inspection (Automatic Transmission)

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  1. Clean the flexplate in solvent.
    2. CAUTION: Refer to SAFETY GLASSES CAUTION in Cautions and Notices.
  2. Dry the flexplate with compressed air.
    3. Fig 1: Flywheel Inspection Areas (Automatic Transmission)
    GM381965Courtesy of GENERAL MOTORS CORP.
  3. Inspect the flexplate for the following conditions:
    • Stress cracks around the engine flexplate-to-torque converter mounting bolt hole locations (1) and/or engine flexplate-to-crankshaft (2, 3)
      • IMPORTANT: Do not attempt to repair the welded areas that retain the ring gear to the flexplate plate. Install a new flexplate.
    • Cracks at welded areas that retain the ring gear onto the flexplate (4)
    • Damaged or missing ring gear teeth (5)
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