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Home >> GMC >> 2011 >> Terrain SLT, 3.0 5, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 3.0L - Repair Instructions >> Repair Instructions >> Heated Oxygen Sensor Replacement - Bank 1 Sensor 1

Heated Oxygen Sensor Replacement - Bank 1 Sensor 1

Fig 1: Identifying Heated Oxygen Sensor - Bank 1 Sensor 1
GM2197495Courtesy of GENERAL MOTORS CORP.
Callout Component Name

Preliminary Procedures

  1. If equipped with FWD, raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. If equipped with AWD, lower the front suspension frame. Refer to Drivetrain and Front Suspension Frame Replacement .
1 Heated Oxygen Sensor
CAUTION: Refer to Heated Oxygen and Oxygen Sensor Caution .
CAUTION: Refer to Fastener Caution .

Tip:  A special anti-seize compound is used in the HO2S threads. The compound consists of liquid graphic and glass beads. The graphic 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-sieze compound applied before reinstallation.

Procedure

  1. Disconnect the heated oxygen sensor harness connector.
  2. If reinstalling the old sensor, coat the threads with anti-sieze compound. Refer to Adhesives, Fluids, Lubricants, and Sealers .

Tighten:  42 N.m (31 lb in)
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