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.
Rear Wheel Speed Sensor Replacement
2012 Chevrolet Sonic L4-1.8LSECTION Rear Wheel Speed Sensor Replacement
Rear Wheel Speed Sensor Replacement
Removal Procedure
Warning:
Refer to Brake Dust Warning Brake Dust Warning.
1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle Service and Repair.
2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation Service and Repair.
3. Remove the rear wheel speed sensor harness connector cover nuts (1).
4. Remove the rear wheel speed sensor harness connector cover (1).
5. Clean the rear drum brake area around the wheel speed sensor of any accumulated dirt and debris.
6. Disconnect the wheel speed sensor electrical connector (1) and release the connector from the wheelhouse bracket.
7. Release the wheel speed sensor harness retainer (2) from the wheel cylinder brake pipe.
8. Release the wheel speed sensor harness grommets (3) from the bracket.
9. Remove the wheel speed sensor bolt (1).
10. Remove the wheel speed sensor (1) from the rear drum brake spacer by pulling the sensor straight upward using a slight twisting motion.
Installation Procedure
1. Install the wheel speed sensor (1) to the rear drum brake spacer.
Caution:
Refer to Fastener Caution Fastener Caution.
2. Install the wheel speed sensor bolt (1) and tighten to 8 Nm (71 lb in).
3. Connect the wheel speed sensor electrical connector (1) and install the connector to the wheelhouse bracket.
4. Install the wheel speed sensor harness retainer (2) to the wheel cylinder brake pipe.
5. Install the wheel speed sensor harness grommets (3) to the bracket.
6. Install the rear wheel speed sensor harness connector cover (1).
7. Install the rear wheel speed sensor harness connector cover nuts (1) and tighten to 2 Nm (18 lb in).
8. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation Service and Repair.
9. Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle.
RENDER: 1.0x
NO RELATED
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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.