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Home >> Chevrolet >> 2022 >> Tahoe PPV, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Repair Instructions (2 Of 2)) >> Repair Instructions >> Variable Geometry Turbocharger Actuator Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
  1. GM5660020Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Use care when positioning actuator that the alignment dowels are fully seated through the heat shield and into the turbocharger housing

    Variable Geometry Turbocharger Actuator (1) - Install NEW

  2. GM5659946Courtesy of GENERAL MOTORS COMPANY

    If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:

    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the components. Adhesives, Fluids, Lubricants, and Sealers
    4. Ensure there are no gaps in the thread locking adhesive once applied to the component.
  3. Turbocharger Wastegate Actuator Bolt (1) - Install and hand tighten [3x]
  4. CAUTION:

    Refer to Fastener Caution .

    NOTE:
    • Before applying tightening torque, ensure that the alignment dowels and actuator are fully seated in the turbocharger housing.
    • Ensure to double check the turbocharger wastegate actuator bolts for proper tightening torque after initial torque to specifications and that the bolt heads are fully seated.
  5. Turbocharger Wastegate Actuator Bolt (1) - Tighten [3x] - Fastener Specifications
  6. Connect the variable geometry turbocharger actuator electrical connector.
  7. GM5675718Courtesy of GENERAL MOTORS COMPANY

    Variable Geometry Turbocharger Actuator Lever (2) - Install

  8. Using an appropriate tool, install the turbocharger wastegate actuator arm retainers (1).
  9. GM5170071Courtesy of GENERAL MOTORS COMPANY

    Install the rear engine wiring harness channel (2).

  10. Engine Wiring Harness Bracket Nut (1) - Install and tighten [3x] - Fastener Specifications .
  11. GM5185371Courtesy of GENERAL MOTORS COMPANY

    Turbocharger Heat Shield (1) - Install

  12. GM5185361Courtesy of GENERAL MOTORS COMPANY

    Turbocharger Heat Shield Nut (2) - Install and tighten - Fastener Specifications

  13. Turbocharger Heat Shield Bolt (1) - Install and tighten [2x] - Fastener Specifications