For 1990-2009 cars

### Removal Procedure

Warning: Refer to Battery Disconnect Warning in the Preface section.

1. Disconnect the negative battery cable.
2. Disconnect the output shaft speed (OSS) sensor electrical connector.
3. Remove the OSS sensor retaining bolt.
4. Remove the OSS sensor from the transaxle.

### Installation Procedure

Note: Lubricate the O-ring with T-IV Automatic Transmission Fluid GM P/N 88900925 (Canadian P/N 22689186).

1. Install a new O-ring on the OSS sensor.

Caution: Refer to Fastener Caution in the Preface section.

2. Install the OSS sensor.
3. Install the OSS sensor bolt and tighten to 7 N·m (62 lb in).
4. Connect the OSS sensor electrical connector.
5. Connect the negative battery cable.