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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 >> Glow Plug Replacement - Cylinder 2 >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Oil Filler Cap - Remove
  2. GM5171779Courtesy of GENERAL MOTORS COMPANY

    Intake Manifold Cover Bolt (1) - Remove

  3. Intake Manifold Cover (2) - Remove
  4. Install the oil filler cap after removal of the intake manifold cover to prevent debris from falling into the engine.
  5. GM5211335Courtesy of GENERAL MOTORS COMPANY

    Charge Air Cooler Outlet Air Hose Clamp (1) - Loosen until disengaged [2x]

  6. Charge Air Cooler Outlet Air Hose (2) - Remove
  7. GM5612777Courtesy of GENERAL MOTORS COMPANY

    Disconnect the throttle body electrical connector.

  8. Throttle Body Bolt (1) - Remove [3x]
  9. Throttle Body (2) - Remove
  10. Throttle Body Gasket (3) - Remove and DISCARD
  11. GM5480508Courtesy of GENERAL MOTORS COMPANY

    Disconnect the wiring harness connector (1).

  12. Clean around the diesel engine combustion air heater glow plug.
  13. GM5612989Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Ensure each glow plug is fully intact when removed from the cylinder head. A broken tip could remain within the combustion chamber, which may not be obvious during removal. Damage to the engine may result if a broken glow plug tip remains within the engine.

    NOTE:
    • Diesel engine combustion air heater glow plugs must be DISCARDED whenever removed, and replaced with NEW.
    • If the cylinder head is removed, the accompanying diesel engine combustion air heater glow plug must be DISCARDED and replaced with NEW.
    • Do not use power tools to install diesel engine combustion air heater glow plug.
    • Cylinder head removal may be required to retrieve a broken tip.

    Remove and DISCARD the diesel engine combustion air heater glow plug (1) from the cylinder head.

  14. Inspect each glow plug tip and ensure the glow plug is not broken. If a broken tip is suspected, inspect the combustion chamber for the glow plug tip.