GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2001 🢒 DeVille 🢒 Engine 🢒 Engine Mechanical - 4.0L 🢒 Oil Pan Cleaning and Inspection

Cleaning Procedure
  1. Clean the oil pan in solvent.

    2. Caution: Wear safety glasses in order to avoid eye damage.

  2. Dry the oil pan with compressed air.

Inspection Procedure

    Object Number: 578644 Size: SH
  1. Inspect the exterior of the oil pan for the following conditions:
    2. • 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

    Object Number: 578649 Size: SH
  2. Inspect the interior of the oil pan for the following conditions:
    3. • 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.