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Exhaust Manifold Replacement - Right Side: Notes

    Fig 1: View Of Exhaust Manifold, Gasket & Catalytic Converter
    GM1708617Courtesy of GENERAL MOTORS CORP.
  1. Drain the cooling system, if equipped with rear air conditioning (A/C). Refer to Draining and Filling Cooling System .
  2. Remove the ignition coils. Refer to Ignition Coil Replacement .
  3. Remove the spark plugs. Refer to Spark Plug Replacement .
  4. Remove the oil level indicator tube. Refer to Oil Level Indicator and Tube Replacement .
  5. Remove the heated oxygen sensor (HO2S). Refer to Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (1500 Series) or Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (2500 Series) .
  6. Remove the catalytic converter to exhaust manifold nuts. (1500 series shown, 2500 series similar).
  7. Lower the vehicle.
    8. Fig 2: View Of Radiator Surge Tank Outlet Hose, Clamp & Water Pump
    GM1697283Courtesy of GENERAL MOTORS CORP.
  8. If equipped with rear A/C perform the following steps, otherwise proceed to step 15.
  9. Reposition the radiator surge tank outlet hose clamp at the water pump (1).
  10. Remove the radiator surge tank outlet hose (2) from the water pump.
  11. Reposition the outlet hose out of the way.
    12. Fig 3: View Of Heater Inlet Hose, Clamp & Waterpump
    GM1697282Courtesy of GENERAL MOTORS CORP.
  12. Reposition the heater inlet hose clamp (1) at the water pump.
  13. Remove the heater inlet hose (2) from the water pump.
  14. Reposition the inlet hose out of the way.
    15. Fig 4: View Of Exhaust Manifold, Gasket & Bolts
    GM1708618Courtesy of GENERAL MOTORS CORP.
  15. Remove the exhaust manifold bolts and exhaust manifold.
  16. Remove and discard the exhaust manifold gasket.
  17. Remove the exhaust seal from the exhaust manifold.
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