GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 GMC C Sierra - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - Allison 🢒 Transmission Fluid Filter Adapter Replacement

Removal Procedure

    Object Number: 659018 Size: SH

    Important: 

       • DO NOT drain the fluid if only the transmission external oil filter adapter is being replaced.
       • Use a standard strap-type filter wrench to remove or install the transmission external oil filter.

  1. Remove the transmission external oil filter (4) by rotating in the counterclockwise direction.
  2. Remove the magnet (2) from the transmission external oil filter adapter (1) in the converter housing or from the filter element.
  3. Clean any metal debris from the magnet. Presence of any metal pieces larger than dust may indicate that transmission replacement or overhaul is required.
  4. Remove the filter adapter (1) from the converter housing.

Installation Procedure

    Object Number: 659017 Size: SH
  1. Install the transmission external oil filter adapter (1).

    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.

    Tighten
    Tighten the adapter to 30 N·m (22 lb ft).

  2. Reinstall the magnet (2) onto the filter adapter (1).
  3. Lubricate the gasket (3) on the transmission external oil filter with transmission fluid.
  4. Install, by hand, the transmission external oil filter (4) until the gasket on the filter touches the converter housing.

    5. Notice: Turning the transmission external oil filter more than ONE FULL TURN after gasket contact will damage the filter and may cause fluid leakage.

  5. Turn the filter ONE FULL TURN ONLY after gasket contact.

    6. Notice: Use only clean and approved transmission fluid.

  6. Check the transmission fluid level. Refer to Transmission Fluid Check .