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Home >> GMC >> 2005 >> Jimmy Part Time, Standard >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Repair Instructions >> Exhaust Manifold Replacement - Left >> Removal Procedure

Removal Procedure

    Fig 1: View Of Breather Tube At Air Cleaner Outlet Duct
    GM444792Courtesy of GENERAL MOTORS CORP.
  1. Disconnect the breather tube at the air cleaner outlet duct.
  2. Fig 2: Locating Cleaner Outlet Duct Retaining Wingnut
    GM312278Courtesy of GENERAL MOTORS CORP.
  3. Remove the air cleaner outlet duct retaining wingnut.
  4. Fig 3: Locating IAT Sensor Harness Connector
    GM10940Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the IAT sensor harness connector.
  6. Fig 4: Air Intake Tube Routing
    GM424556Courtesy of GENERAL MOTORS CORP.
  7. Remove the air cleaner outlet duct from the throttle body.
  8. Remove the intermediate steering shaft. Refer to Intermediate Steering Shaft Replacement - Lower in Steering Wheel and Column.
  9. Fig 5: Locating Engine Coolant Temperature (ECT) Sensor Electrical Connector
    GM246797Courtesy of GENERAL MOTORS CORP.
  10. Disconnect the engine coolant temperature (ECT) sensor electrical connector.
  11. Fig 6: View Of Radiator Inlet Hose Support Bracket & Nut
    GM341247Courtesy of GENERAL MOTORS CORP.
  12. Remove the radiator inlet hose support bracket and nut.
  13. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  14. Disconnect the exhaust pipe from the exhaust manifold. Refer to Exhaust Manifold Pipe Replacement .
  15. Lower vehicle.
  16. Remove the front tire to gain access to the rear exhaust manifold bolts. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  17. Fig 7: View Of Wheelhouse Extension
    GM303008Courtesy of GENERAL MOTORS CORP.
  18. Remove the fender wheelhouse extension.
  19. Working through the wheel house opening disconnect the spark plug wires from the spark plugs.
    1. Rotate the spark plug wire boot one half turn.
    2. Pull outward on the spark plug wire boot to release from the spark plug.
  20. Fig 8: View Of Exhaust Manifold Bolts & Stud
    GM341362Courtesy of GENERAL MOTORS CORP.
  21. Remove the exhaust manifold bolts and the stud.
  22. Lower the vehicle.
  23. From under the hood remove the exhaust manifold and the spark plug wire shields from the engine.
  24. Fig 9: Removing Exhaust Manifold Gaskets
    GM328540Courtesy of GENERAL MOTORS CORP.
  25. Remove and discard the exhaust manifold gaskets.
  26. Clean all gasket surfaces. Refer to Exhaust Manifold Cleaning and Inspection in Engine Mechanical - 4.3L Unit Repair.