gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Relays and Modules - Computers and Control Systems > < Heated Oxygen Sensor (HO2S) Replacement Bank 1 Sensor 1|Page 3487
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1. If reinstalling the old sensor, coat the threads with anti-seize compound GM P/N 12377953, or equivalent.

NOTE:  Refer to Component Fastener Tightening Notice in Service Precautions.

2. Install the HO2S (2).

Tighten
Tighten the sensor to 42 N.m (31 lb ft).

3. Connect the HO2S electrical connector (1).
4. Install the CPA retainer.
5. Lower the vehicle.

Relays and Modules - Computers and Control Systems > < Heated Oxygen Sensor (HO2S) Replacement Bank 1 Sensor 1|Page 3487