2009 Hummer H3 Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Front Wheel Speed Sensor Replacement

Fig 1: Replacing Front Wheel Speed Sensor
GM1851953Courtesy of GENERAL MOTORS CORP.
Callout Component Name

Preliminary Procedures

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation .
  3. Remove the front disc brake rotor. Refer to Front Brake Rotor Replacement .
1 Wheel Speed Sensor Electrical Connector
Procedure: 
Disconnect the electrical connector and release the clip from the vehicle body.
2 Wheel Speed Sensor Wiring Harness Retaining Clip
3 Wheel Speed Sensor Harness Clip Bolt (if equipped)
CAUTION: Refer to Fastener Caution .

Tip:  If equipped with a wheel speed sensor wire harness clip, release the clip from the upper control arm.

Tighten:  9 N.m (80 lb in)
4 Wheel Speed Sensor Wiring Harness Retaining Clip
5 Wheel Speed Sensor Mounting Bolt

Tighten:  18 N.m (13 lb ft)
6 Wheel Speed Sensor
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.