Oldsmobile 24218077 Sensor Assembly, Automatic Transmission Input Speed

Loosen the left-front wheel lug nuts, then raise the front of the vehicle and support it securely on jackstands. Remove the wheel. Remove the inner fender splash shield. Remove the VSS hold-down bolt and clamp, then pull the sensor out of the transaxle case using a twisting motion. Installation is the reverse of removal. Be sure to lubricate the O-ring with clean transaxle lubricant before installing.

This sensor is used only on models with an automatic transaxle. Begin by turning the ignition key to OFF. Next, raise the front of the vehicle and place it securely on jackstands. Disconnect the electrical connector from the OSS sensor. Disengage the electrical harness from the bracket attached to the OSS sensor by pushing the lower half of the clip to the left with a small screwdriver until it releases from the upper half of the clip, then remove the retaining bolt to take out the OSS sensor. After that, remove the old O-ring from the OSS sensor and discard it, ensuring to use a new O-ring during installation, even if planning to reuse the old sensor. Finally, installation is the reverse of removal, making sure to tighten the OSS sensor retaining bolt securely.

Raise the front of the vehicle and secure it on jackstands.

The OSS sensor is located on the right end of the back side of the transaxle, near the right inner CV joint.

To disengage the electrical harness, push the lower half of the clip to the left with a small screwdriver until it releases from the upper half of the clip.

Use a new O-ring.

Repeat the process of raising the vehicle, disconnecting the wiring, removing the sensor bolt, and pulling out the sensor while discarding the O-ring, ensuring to use a new O-ring and securely tighten the sensor mounting bolt during reinstallation.