Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Chevrolet Impala LSFACTORY OEM SERVICE PROCEDURE
Removal Procedure
- Raise and support the vehicle on a suitable hoist. Refer to Lifting and Jacking the Vehicle in General Information.
- Remove the front tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
- Disconnect the front wheel speed sensor jumper harness electrical connector (1).
- Remove the hub and bearing assembly (2). Refer to Wheel Bearing/Hub Replacement - Front in Front Suspension.
IMPORTANT:
The front wheel speed sensors and rings are integral with the hub and bearing assemblies.
If a speed sensor or a ring needs replacement, replace the entire hub and bearing assembly. Do not service the harness pigtail individually because the harness pigtail is part of the sensor. Refer to Wheel Bearing/Hub Replacement - Front in Front Suspension.
If a speed sensor or a ring needs replacement, replace the entire hub and bearing assembly. Do not service the harness pigtail individually because the harness pigtail is part of the sensor. Refer to Wheel Bearing/Hub Replacement - Front in Front Suspension.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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