Heated Oxygen Sensor Replacement - Sensor 1

Fig 1: Heated Oxygen Sensor - Sensor 1

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedure Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
1	Heated Oxygen Sensor 1 Fastener CAUTION: Refer to Fastener Caution . Procedure Disconnect the electrical connector. Release the retainer. Remove the heated oxygen sensor 1 with CH-6179 remover/installer and GE-611 wrench. TIP: A special anti-seize compound is used in the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before reinstallation. Tighten 42 N.m (31 lb ft) Special Tools CH-6179 Oxygen Sensor Wrench Remover/Installer GE-611 Torque Wrench 3/8" For equivalent regional tools, refer to Special Tools (Diagnostic Tools) .

Callout

Component Name

Preliminary Procedure
Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .

Heated Oxygen Sensor 1 Fastener

CAUTION:

Refer to Fastener Caution .

Procedure

Disconnect the electrical connector.
Release the retainer.
Remove the heated oxygen sensor 1 with CH-6179 remover/installer and GE-611 wrench.

TIP: A special anti-seize compound is used in the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before reinstallation.
Tighten
42 N.m (31 lb ft)

Special Tools

CH-6179 Oxygen Sensor Wrench Remover/Installer
GE-611 Torque Wrench 3/8"

For equivalent regional tools, refer to Special Tools (Diagnostic Tools) .