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.
2012 Chevrolet Express 2500 V8-4.8LFACTORY OEM SERVICE PROCEDURE
Vehicle Speed Sensor: Service and Repair
Vehicle Speed Sensor Replacement
Removal Procedure
1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle Service and Repair.
2. Remove the electrical connector from the speed sensor.
3. Remove the bolt.
4. Remove the speed sensor and the O-ring seal.
5. Inspect the seal and the transmission case. Replace the seal, if necessary.
Installation Procedure
1. Install the speed sensor and the O-ring seal into the transmission.
Caution:
Refer to Fastener Caution Fastener Caution.
2. Install the bolt and tighten to 11 Nm (97 lb in).
3. Install the electrical connector to the speed sensor.
4. Lower the vehicle.
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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