Diagnostic Aids
WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect the OSS senor, harness, and connector for metallic debris.
- Proper torque of the OSS sensor mounting bolt is critical to proper OSS sensor operation.
- If the scan tool ISS/OSS Supply Voltage indicates out of range, the fault could also be caused by the transmission input shaft speed sensor.