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Home >> Cadillac >> 2006 >> STS Base, 3.6 7, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Control System - 4.6L (LH2) - Introduction (2 Of 2)) >> Repair Instructions >> Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
NOTE: Refer to Oxygen Sensor Notice.
IMPORTANT:
  • Bank 1 on the LH2 engine in this vehicle is the right side of the engine while sitting in the driver seat.
  • Sensor 1 is the sensor closest to the engine, or farthest forward toward the front of vehicle.
  • A special anti-seize compound is used on the oxygen sensor threads. New service sensors should already have the compound applied to the threads. Coat the threads of a reused sensor with anti-seize compound P/N 5613695 or equivalent.
    Fig 1: View Of HO2S Electrical Connector - Bank 1, Sensor 1
    GM887916Courtesy of GENERAL MOTORS CORP.
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
  2. Disconnect the oxygen sensor electrical connector from the engine wiring harness connector at the rear of the right head.
  3. Note the wire routing and attachment points for reassembly.
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
    5. Fig 2: View Of HO2S - Bank 1, Sensor 1
    GM887903Courtesy of GENERAL MOTORS CORP.
  5. Remove oxygen sensor from the exhaust manifold.
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