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Home >> Chevrolet >> 2021 >> Trailblazer RS, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls And Fuel - 1.0L (L4B L4F L4G LIJ) Or 1.2L (L4H L4K LIF LIH) - Repair Instructions) >> Repair Instructions >> Heated Oxygen Sensor Replacement - Sensor 2 >> Installation Procedure

Installation Procedure

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  1. GM5392501Courtesy of GENERAL MOTORS COMPANY

    Use the J-39194-C  wrench to install the heated oxygen sensor (1) and tighten to 42 N.m (31 lb ft).

  2. Electrical Connector - Connect
  3. GM5482122Courtesy of GENERAL MOTORS COMPANY

    Catalytic Converter Heat Shield (3) - Install - Catalytic Converter Heat Shield Replacement (LIH Lower)

  4. Exhaust Front Muffler - Install Exhaust Front Muffler Replacement (FWD)
  5. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection
  6. Perform the HO2S heater resistance learned values reset. HO2S Heater Resistance Learned Values Reset