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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 638 (Engine Mechanical - 4.0L (Unit Repair)) >> Repair Instructions >> Oil Pan Cleaning and Inspection >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect the exterior of the oil pan for the following conditions:
    • The drain plug hole for damaged threads (1)
    • Damage to the engine mount bracket mounting holes (4)
    • The oil level switch (3) hole for damaged threads
    • Dents or damage to the exterior of the oil pan (2)

      An oil pan that is dented may interfere with the position of the oil pump screen or not distribute oil properly in the pan sump area.

    • Damage to the oil pan gasket
    Fig 1: Checking Oil Pan Exterior
    G01817056Courtesy of GENERAL MOTORS CORP.
  2. Inspect the interior of the oil pan for the following conditions:
    • Gouges or damage to the oil pan sealing surfaces (1)
    • Damage to the oil pan baffle (2)
    • Damage to the oil pan bolt holes (3)
  3. Repair or replace the oil pan as necessary.
    Fig 2: Checking Oil Pan Interior
    G01817057Courtesy of GENERAL MOTORS CORP.