Turbocharger Removal

Special Tool 

EN-49942  Holding Wrench

For equivalent regional tools, refer to Special Tools .

1. Install the EN-49942  holding wrench (2) to the turbocharger coolant feed pipe. Guide a ratchet wrench (1) along with an extension through EN-49942  holding wrench to the turbocharger coolant feed pipe hollow screw.
   Fig 1: Holding Wrench And Ratchet Wrench

   Courtesy of GENERAL MOTORS COMPANY
2. Loosen the turbocharger coolant feed pipe hollow screw with ratchet wrench and extension (1).
   Fig 2: Ratchet Wrench, Holding Wrench And Coolant Feed Pipe

   Courtesy of GENERAL MOTORS COMPANY
   NOTE: EN-49942  holding wrench (2) should be installed to turbocharger coolant feed pipe as shown. The holding wrench should be installed to avoid twist of the turbocharger coolant feed pipe during the loosening procedure.
3. Remove the turbocharger coolant feed pipe hollow screw (3) and the 2 seal rings (1) and (2).
   Fig 3: Turbocharger Oil Return Pipe

   Courtesy of GENERAL MOTORS COMPANY
4. Disconnect the turbocharger oil return pipe (4) from the engine block.
5. Remove the turbocharger oil feed pipe bolt (5) from the oil cooler.
   Fig 4: Turbocharger Oil Feed Pipe Components

   Courtesy of GENERAL MOTORS COMPANY
6. Remove the turbocharger oil feed pipe hollow screw (4) and the 2 seal rings (1) and (3) and close the screw bore in the turbocharger.
7. Remove the turbocharger oil feed pipe (2) and the rubber seal ring.
8. Disconnect the turbocharger coolant return hose (6) from the oil cooler coolant inlet pipe and remove the turbocharger coolant return pipe bolt (7) from the oil cooler.
9. Remove the 8 turbocharger nuts (1).
   Fig 5: Turbocharger Nuts

   Courtesy of GENERAL MOTORS COMPANY
10. Remove the turbocharger assembly (1) and the turbocharger gasket (2).
    Fig 6: Turbocharger Assembly And Turbocharger Gasket

    Courtesy of GENERAL MOTORS COMPANY