GM Service Manual Online
For 1990-2009 cars only

Object Number: 2027720  Size: MF

Callout

Component Name

1

Heated Oxygen Sensor 1

Procedure

Disconnect the heated oxygen sensor 1 wiring harness plug.

2

Remove the heated oxygen sensor 1.

Caution: Refer to Fastener Caution in the Preface section.

Note: When re-using the heated oxygen sensor, coat the thread with assembly paste.

Tighten
40 N·m (30 lb ft)