chevrolet Workshop Repair Guides

Chevrolet Workshop Service and Repair Manuals

All Technical Service Bulletins for Oxygen Sensor:|676540 > < MIL ON - Engine Rough, Miss, and O2 Sensor DTC's|Page 1158
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harness by cleaning or replacement of corroded terminals. DO NOT use or apply any type of sealant anywhere in the oxygen sensor connectors or
wires. Repair attempts to oxygen sensor harnesses generally result in a repeat failure.

5.

Record all DTCs encountered during problem diagnosis on the repair order. This is needed for engineering analysis of the components.

6.

Verify the symptom and/or DTC is corrected before returning the vehicle to the owner.

Important

The new jumper harness must be routed according to the Component Location Views in Section 8A of the appropriate S/T Truck Service Manual.

Parts Information

Part Number

Description

Quantity

12173753

Oxygen Sensor Wiring

1

Harness, 2WD

12173754

Oxygen Sensor Wiring

1

Harness, 4WD

Parts are currently available from GMSPO.

Warranty Information

For vehicles repaired under warranty, use:

Labor 
Operation

Description

Labor Time    

Jumper Harness,

N6271

Replace

0.5 hr

Important

Labor operation is coded to base vehicle coverage in the warranty system.

All Technical Service Bulletins for Oxygen Sensor:|676540 > < MIL ON - Engine Rough, Miss, and O2 Sensor DTC's|Page 1158