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Home >> Chevrolet >> 2014 >> Express 1500 LS, AWD >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Repair Instructions >> Catalytic Converter Replacement (LGH) >> Removal Procedure

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
    2. Fig 1: Identifying Engine Harness Connector And Emission Reduction Fluid Injector Connector
    GM2369500Courtesy of GENERAL MOTORS COMPANY
  2. Disconnect the engine harness connector (1) and the emission reduction fluid injector connector (2), from the catalytic converter.
    3. Fig 2: Identifying Exhaust Temperature Sensor 2 Position Connector
    GM2369496Courtesy of GENERAL MOTORS COMPANY
  3. Disconnect the exhaust temperature sensor-position 2 connector from the lower right side of the transmission.
    4. Fig 3: Identifying catalytic converter to particulate filter nuts
    GM1862863Courtesy of GENERAL MOTORS COMPANY
  4. Remove the catalytic coverter to diesel particulate filter nuts (3)
    5. Fig 4: View Of exhaust pipe clamp
    GM1862851Courtesy of GENERAL MOTORS COMPANY
  5. loosen the turbocharger exhaust pipe-to-catalytic converter clamp (1).
    6. Fig 5: View Of Catalytic Converter Hanger-To-Transmission Bolts
    GM2369497Courtesy of GENERAL MOTORS COMPANY
  6. Remove the catalytic converter hanger to transmission bolts (1).
  7. With the catalytic converter hanger attached, lower the catalytic converter (2).
  8. If replacing catalytic converter, transfer the hanger bracket and the exhaust temperature sensor.
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