GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2002 🢒 Yukon XL - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L80-E 🢒 Vehicle Output Speed Sensor Replacement

Removal Procedure

    Object Number: 686957 Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

    2. Important: This procedure is for 2WD vehicles. If the vehicle is equipped with 4WD, the output speed sensor is located on the transfer case.

  2. Disconnect the output speed sensor (2) electrical connector.
  3. Remove the output speed sensor bolt.
  4. Remove the output speed sensor (2) and the bracket assembly from the case.
  5. Inspect the output speed sensor assembly (2) for any evidence of damage.

Installation Procedure

    Object Number: 686957 Size: SH
  1. Lubricate the output speed sensor seal with automatic transmission fluid.
  2. Install the output speed sensor (2) and the bracket assembly.

    3. 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.

  3. Install the bolt.

    4. Tighten
    Tighten the bolt to 11 N·m (96 lb in).

  4. Connect the output speed sensor electrical connector.
  5. Lower the vehicle.