GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2001 🢒 Catera 🢒 Brakes 🢒 Antilock Brake System 🢒 Rear Wheel Speed Sensor Replacement

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

    2. Object Number: 174343 Size: SH
  2. Remove the bolt/screw (2) from the differential housing (3).
  3. Remove the wheel speed sensor (1) from the differential housing (3).

    4. Object Number: 174852 Size: SH
  4. Remove the wiring harness/wheel speed connector from the clip on the vehicle under-body.
  5. Remove the wheel speed connector (2) from the wiring harness connector.
  6. Remove the wheel speed sensor (1) from the vehicle.

Inspection Procedure
   • 
  • Inspect for the following on the sensor face:
    •    - Inspect for an accumulation of metallic particles.
       - Clean the sensor as required.
       - Inspect for an accumulation of dirt.
       - Clean the sensor as required.
       - Inspect for an accumulation of grease.
       - Clean the sensor as required.
       - Inspect for an accumulation of other contaminants.
       - Clean the sensor as required.
       • 
  • Inspect the sensor face for evidence of damage. Inspect the sensor for contact with the toothed sensor ring. The sensor should not contact the toothed sensor ring. Determine and correct the cause of the damage when damage is evident. Replace the sensor if damage interferes with proper operation. Check the axle bearing for excessive wear.

    • Installation Procedure

    Notice: The wheel speed sensor is a tight fit and is to be pushed in by hand. DO NOT force the sensor into position, as damage to the sensor could result.

    Notice: Wheel speed sensors must be given an anti corrosion coating before installation to prevent corrosion. Use silicone grease P/N 12345579 or equivalent.


      Object Number: 174852 Size: SH
    1. Install the wheel speed connector (2) to the wiring harness connector.
    2. Install the wiring harness/wheel speed connector into the clip on the vehicle under-body.

      3. Object Number: 174343 Size: SH
    3. Install the wheel speed sensor (1) into the differential housing (3).

      4. 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.

    4. Install the speed sensor bolt/screw (2).

      5. Tighten
      Tighten the bolt/screw to 8 N·m (71 lb in).

    5. Lower the vehicle.
    6. Perform the Diagnostic System Check - ABS .