GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 Yukon XL - 4WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - Allison 🢒 Automatic Transmission Fluid Pressure Test Hole Plug Replacement

Removal Procedure

    Object Number: 659344 Size: SH
  1. Remove the pressure tap plug (2) and O-ring (1) that is located on the bottom of the converter housing near the control main filter.
  2. Remove the O-ring from the plug and discard it.

Installation Procedure

    Object Number: 659344 Size: SH
  1. Install a new O-ring (1) on the pressure tap plug (2).

    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 plug and O-ring into the converter housing.

    3. Tighten
    Tighten the plug to 12 N·m (108 lb in).