GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2002 🢒 GMC C Sierra - 2WD 🢒 General Information 🢒 Maintenance and Lubrication 🢒 Fluid Replacement

Removal Procedure

    Object Number: 102870 Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the oil fill plug.

    3. Object Number: 102872 Size: SH
  3. Place a suitable drain pan under the transmission in order to catch the drained transmission fluid.
  4. Remove the oil drain plug.
  5. Remove any old sealant from the transmission housing.

Installation Procedure

    Object Number: 102872 Size: SH
  1. Apply a thin bead of sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the oil drain and fill plug threads.

    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 oil drain plug.

    3. Tighten
    Tighten the oil drain plug to 37 N·m (27 lb ft).


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

    4. Object Number: 102870 Size: SH
  4. Install the oil fill plug.

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

  5. Lower the vehicle.