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.
4T45-E - Automatic Transmission
2009 Chevrolet HHR L4-2.4LSECTION 4T45-E - Automatic Transmission
Vehicle Speed Sensor Replacement
Removal Procedure
Warning: Refer to Battery Disconnect Warning (Service Precautions).
1. Disconnect the negative battery cable from the battery negative terminal.
2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (Service and Repair).
3. Remove the electrical connector at the vehicle speed sensor.
4. Remove the retaining stud and the sensor. Pull straight out in order to avoid damage to the case.
Installation Procedure
1. Clean and dry the vehicle speed sensor.
Caution: Refer to Fastener Caution (Fastener Caution).
2. Install the vehicle speed sensor and the retaining bolt.
Tighten the stud to 12 Nm (97 lb in).
3. Install the electrical connector at the sensor.
4. Remove the safety stands.
5. Lower the vehicle.
6. Connect the negative battery cable.
Tighten the terminal bolt to 15 Nm (11 lb ft).
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.