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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 326 (Engine Mechanical - 3.0L (LGY) - Repair Instructions) >> Repair Instructions >> Oil Pan Overhaul (RWD) >> Inspection Procedure

Inspection Procedure

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Fig 1: Identifying Oil Pan Inspection Areas (RWD)
GM5337997Courtesy of GENERAL MOTORS COMPANY
  1. Inspect the oil pan for the following conditions:
    • Damage to the engine oil level switch mounting holes (1)
    • Damage to the lower oil pan mounting holes (2)
    • Gouges or damage to the lower oil pan sealing surfaces (3)
    • Damage to the brace mounting bosses (4)
    • Gouges or damage to the upper oil pan sealing surfaces (5)
    • Damage to the positive crankcase ventilation separator drain bolt hole (6)
    • Damage to the high pressure part seal area (7)
    • Damage to the engine oil cooler mount area (8)
  2. Repair or replace the oil pan and/or oil pan components as necessary.
  3. Replace the lower oil pan if removed from the upper oil pan.