Heated Oxygen Sensor Replacement - Sensor 1

Fig 1: Heated Oxygen Sensor - Sensor 1

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedures Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection . Raise the vehicle by its full height. Refer to Lifting and Jacking the Vehicle . Disconnect the heated oxygen sensor-1 connector.
1	Heated Oxygen Sensor-1 CAUTION: Refer to Fastener Caution . Procedure Remove the heated oxygen sensor-1. Tighten 42 (31 lb ft) Special Tools EN-48259 Installer/Remover For equivalent regional tools, refer to Special Tools (Diagnostic Tools) .

Callout

Component Name

Preliminary Procedures

Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
Raise the vehicle by its full height. Refer to Lifting and Jacking the Vehicle .
Disconnect the heated oxygen sensor-1 connector.

Heated Oxygen Sensor-1

CAUTION:

Refer to Fastener Caution .

Procedure
Remove the heated oxygen sensor-1.
Tighten
42 (31 lb ft)
Special Tools
EN-48259 Installer/Remover
For equivalent regional tools, refer to Special Tools (Diagnostic Tools) .