GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2009 🢒 SRX 🢒 Engine 🢒 Engine Controls and Fuel - 4.6L (LH2) 🢒 Heated Oxygen Sensor Replacement - Bank 2 Sensor 2

Removal Procedure

Caution: Refer to Oxygen Sensor Caution in the Preface section.

Note: 

   • Bank 2 on the LH2 engine in this vehicle is the left side of the engine while sitting in the driver seat.
   • Sensor 2 is the second sensor down stream from the engine towards the rear of the 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.


    Object Number: 1251007 Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Disconnect the oxygen sensor electrical connector.
  3. Note the wire routing and attachment points for reassembly.
  4. Remove the oxygen sensor from the exhaust pipe.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1251007 Size: SH
  1. Install the oxygen sensor to the exhaust pipe. Tighten the front heated oxygen sensor (HO2S) to 42 N·m (31 lb ft).
  2. Route and attach the wiring as noted during disassembly.
  3. Connect the oxygen sensor electrical connector.
  4. Lower the vehicle.