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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1311 (Engine Controls And Fuel - 4.8L, 5.3L, 6.0L, 6.2L - Introduction (1 Of 2)) >> Repair Instructions >> Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (2500 Series) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Engine Wiring Harness Electrical Connectors, (CPA) Retainers & Engine Harness Clips
    GM1704006Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Heated Oxygen and Oxygen Sensor Caution
  1. Remove the right wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Right Side (Chevrolet) or Front Wheelhouse Liner Replacement - Right Side (GMC) .
  2. Remove the connector position assurance (CPA) retainer (2).
  3. Disconnect the HO2S electrical connector (7) from the engine wiring harness electrical connector (1).
  4. Remove the HO2S clip (8) from the engine wiring harness.
    5. Fig 2: Identifying Exhaust System Components
    GM1851870Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Excessive Force and Oxygen Sensor Caution
  5. Remove the HO2S (2).
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