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Home >> Chevrolet >> 2022 >> Tahoe SSV >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Engine Mechanical - 3.0L (Lm2) Diesel - Repair Instructions (1 Of 11)) >> Repair Instructions >> Lower Crankcase Extension Replacement (2WD, with RC1, with F47) >> Cleaning and Inspection Procedure - Required

Cleaning and Inspection Procedure - Required

WARNING: This page is about a different variant/trim than selected.
  1. GM5044132Courtesy of GENERAL MOTORS COMPANY

    Clean the automatic transmission flex plate (3) in solvent.

    2. WARNING:

    Refer to Safety Glasses and Compressed Air Warning

  2. Dry the automatic transmission flex plate (3) with compressed air.
  3. Inspect the automatic transmission flex plate (3) for the following conditions:
    1. Stress cracks around the automatic transmission flex plate to torque converter mounting bolt hole locations (1) and automatic transmission flex plate to crankshaft (2, 4)
      2. NOTE:

      Do not attempt to repair the welded areas that retain the ring gear to the automatic transmission flex plate. Install a NEW automatic transmission flex plate.

    2. Cracks at welded areas that retain the ring gear onto the automatic transmission flex plate (3)
    3. Damaged or missing ring gear teeth (5)
  4. GM5845387Courtesy of GENERAL MOTORS COMPANY

    Clean the crankshaft pulley (1).

  5. Inspect the crankshaft pulley (1) for damage to belt drive surface and to crankshaft pulley hub.
  6. Inspect the crankshaft pulley (1) hub groove for damage or wear.
  7. Replace the crankshaft pulley (1) if any damage is found.
  8. GM5845392Courtesy of GENERAL MOTORS COMPANY

    Clean the timing chain lower cover (1).

  9. Clean the timing chain lower cover mating surfaces.
  10. Inspect the timing chain lower cover mating surfaces for damage.
  11. Inspect the crankshaft rear oil seal bore for damage.
  12. Inspect the fuel pump access hole cover (2) for damage.
  13. Replace the timing chain lower cover (1) if damaged.
  14. GM5845381Courtesy of GENERAL MOTORS COMPANY

    Inspect the oil pump pipe tube (1) for cracks, imperfections, and/or damage.

  15. Inspect the mounting surface (2) for possible leakage paths.
  16. Inspect the oil pump screen (3) for blockage, foreign material, tears, cracks and/or damage.
  17. Clean the oil pump suction pipe with solvent.
  18. Clean the oil pump suction pipe mating surfaces.
  19. GM5863031Courtesy of GENERAL MOTORS COMPANY

    Inspect the timing belt (1) for grooves, pitting, fraying, or missing teeth.

  20. Replace the timing belt (1) if damaged.
  21. GM5863028Courtesy of GENERAL MOTORS COMPANY

    Clean the oil pump sprocket (1) surfaces.

  22. Inspect the oil pump sprocket (1) for grooves, scoring, scratches, pitting, or embedded bearing material.
  23. Replace the oil pump sprocket (1) if damaged.
  24. GM5845394Courtesy of GENERAL MOTORS COMPANY

    Clean the engine oil cooler (1, 2).

  25. Inspect the engine oil cooler (1, 2).
  26. Replace the engine oil cooler (1, 2) if any damage is found.
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