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.
2004 GMC Jimmy (CANADA) V6-4.3LFACTORY OEM SERVICE PROCEDURE
Vehicle Speed Sensor: Service and Repair
Vehicle Speed Sensor (VSS) Replacement
Removal Procedure
1. Raise the vehicle.
2. Place a drain pan under the vehicle.
3. Remove the electrical connector from the sensor.
4. Remove the bolt (2).
5. Using a twisting and pulling motion, remove the vehicle speed sensor (1) from the case.
6. Remove and discard the O-ring seal (3).
Installation Procedure
1. Install the new O-ring seal (3) on the vehicle speed sensor (1).
2. Coat the O-ring seal (3) with clean transmission fluid.
3. Install the vehicle speed sensor (1) into the transmission case.
Notice: Refer to Fastener Notice in Service Precautions.
4. Install the bolt (2).
Tighten the bolt to 11 Nm (97 inch lbs.).
5. Connect the wiring harness electrical connector to the vehicle speed sensor.
6. Remove the drain pan.
7. Lower the vehicle.
8. Fill the transmission to the proper level with DEXRON-III transmission fluid.
Removal Procedure
1. Raise the vehicle.
2. Place a drain pan under the vehicle.
3. Remove the electrical connector from the sensor.
4. Remove the bolt (2).
5. Using a twisting and pulling motion, remove the vehicle speed sensor (1) from the case.
6. Remove and discard the O-ring seal (3).
Installation Procedure
1. Install the new O-ring seal (3) on the vehicle speed sensor (1).
2. Coat the O-ring seal (3) with clean transmission fluid.
3. Install the vehicle speed sensor (1) into the transmission case.
Notice: Refer to Fastener Notice in Service Precautions.
4. Install the bolt (2).
Tighten the bolt to 11 Nm (97 inch lbs.).
5. Connect the wiring harness electrical connector to the vehicle speed sensor.
6. Remove the drain pan.
7. Lower the vehicle.
8. Fill the transmission to the proper level with DEXRON-III transmission fluid.
Factory Service Tools
Use the Manual With the Right Hardware
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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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