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Home >> Chevrolet >> 2004 >> Tracker 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 2.0L (Introduction) >> Repair Instructions >> Heated Oxygen Sensor Replacement - Position 2 (w/PUP-TWC) >> Removal Procedure

Removal Procedure

IMPORTANT: The heated oxygen sensor (HO2S) may be difficult to remove at temperatures above 48°C (120°F). In order to prevent damage to any threads in the exhaust manifold, allow the exhaust system to cool down before attempting to remove the HO2S.
  1. Disconnect the HO2S 2 electrical connector.
    2. CAUTION: Refer to Vehicle Lifting Caution in Cautions and Notices.
  2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the HO2S 2 (1) from the exhaust pipe below the PUP-TWC (2).
    4. Fig 1: Locating O2 Sensor
    GM472422Courtesy of GENERAL MOTORS CORP.
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