GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 GMC C Sierra - 2WD 🢒 General Information 🢒 Maintenance and Lubrication 🢒 Fluid Replacement

Removal Procedure

    Object Number: 102870 Size: SH
  1. If the fluid is contaminated use a suitable container under the transmission.
  2. Remove the oil fill plug.
  3. Remove the lower center PTO bolt.
  4. Drain the fluid.

Installation Procedure

    Object Number: 102872 Size: SH
  1. Apply a thin bead of sealant GM P/N 12345739 to the PTO cover bolt.

    2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  2. Install the cover bolt.

    3. Tighten
    Tighten the bolt to 41 N·m (30 lb ft).


    Object Number: 2327 Size: SH
  3. Fill the transmission to the bottom of the oil fill plug hole. Refer to Lubrication Specifications .

    4. Object Number: 102870 Size: SH
  4. Remove all of the existing sealant from the oil fill plug hole.
  5. Apply a thin bead of sealant GM P/N 12346004 to the treads of the oil fill plug hole.
  6. Install the oil fill plug.

    7. Tighten
    Tighten the oil fill plug to 37 N·m (27 lb ft).