GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 GMC C Sierra - 2WD 🢒 Engine 🢒 Engine Mechanical - 8.1L 🢒 Oil Pan Installation

    Object Number: 677833 Size: SH

    Important: The oil pan must be installed within 5 minutes of the sealer being applied or the sealer begins to cure, causing an inadequate seal.

  1. Apply sealant GM P/N 12346141 (Canadian P/N 10953433) to the side of the front cover (1) and rear crankshaft bearing cap (2), on both the left and right sides, 4 locations total.

    2. Object Number: 1309994 Size: SH
  2. Install the new oil pan gasket (404) into the oil pan groove.
  3. Install the oil pan (400).

    4. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 677869 Size: SH
  4. Install the oil pan bolts (1-12).
  5. Tighten the oil pan bolts in sequence.

    6. Tighten

    1. Tighten the oil pan bolts (1-12) a first pass in sequence to 10 N·m (89 lb in).
    2. Tighten the oil pan bolts (1-12) a final pass in sequence to 25 N·m (18 lb ft).

    Object Number: 635648 Size: SH
  6. Install the oil pan drain plug.

    7. Tighten
    Tighten the oil pan drain plug to 28 N·m (21 lb ft).


    Object Number: 1310051 Size: SH
  7. Lubricate the oil level sensor O-ring with engine oil.
  8. Install the oil level sensor.

    9. Tighten
    Tighten the oil level sensor to 20 N·m (15 lb ft).