Removal Procedure

Tools Required: 

J 39194-C  Oxygen Sensor Wrench

1. Remove the exhaust manifold heat shield. Refer to Exhaust Manifold Replacement (LSJ) or Exhaust Manifold Replacement (L61) in Engine Exhaust.
Fig 1: Removing & Installing Exhaust Manifold Heat Shield
Courtesy of GENERAL MOTORS CORP.
2. Disconnect the oxygen sensor harness connector.
3. Remove the oxygen sensor using J 39194-C  .
Fig 2: Oxygen Sensor & Harness Connector
Courtesy of GENERAL MOTORS CORP.