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Home >> Chevrolet >> 2024 >> Tahoe Commercial, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Repair Instructions (1 Of 2)) >> Repair Instructions >> High Pressure Diesel Fuel Feed to Rail Pipe Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Turn OFF the engine for 30 seconds before proceeding. This will purge the fuel pressure from the complete fuel system.
  2. Plenum Front Panel Outer Reinforcement - Remove - Plenum Front Panel Outer Reinforcement Removal and Installation
  3. GM5171779Courtesy of GENERAL MOTORS COMPANY

    Oil Filler Cap - Remove

  4. Intake Manifold Cover Bolt (1) - Remove
  5. Intake Manifold Cover (2) - Remove
  6. Install the oil filler cap after removal of the intake manifold cover to prevent debris from falling into the engine.
  7. GM5150211Courtesy of GENERAL MOTORS COMPANY

    Air Cleaner Outlet Front Duct Clamp (1) - Loosen [2x]

  8. Air Cleaner Outlet Front Duct (2) - Remove
  9. GM5150241Courtesy of GENERAL MOTORS COMPANY

    Air Cleaner Outlet Duct Clamp (1) - Loosen

  10. Air Cleaner Outlet Duct (2) - Remove
  11. GM5170071Courtesy of GENERAL MOTORS COMPANY

    Remove the 3 rear engine wiring harness channel nuts (1).

  12. Position the rear engine wiring harness channel (2) out of the way.
  13. GM5193255Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Outlet Pipe Bracket Bolt (1) - Remove

  14. GM5204431Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Note: Support the exhaust gas recirculation pipe when loosening/tightening the bolts to ensure the pipe is not deformed.

    Remove the 2 exhaust gas recirculation cooler bolts (1).

  15. GM5206053Courtesy of GENERAL MOTORS COMPANY

    Remove the turbocharger coolant feed pipe bolt (3) and position the turbocharger coolant feed pipe (2) out of the way.

  16. GM5204427Courtesy of GENERAL MOTORS COMPANY

    Remove the turbocharger coolant return hose clip (1) and position the turbocharger coolant return hose out of the way.

  17. Remove the exhaust gas recirculation pipe bolt (2).
  18. GM5204428Courtesy of GENERAL MOTORS COMPANY

    Remove the 2 exhaust gas recirculation pipe bolts (1).

  19. GM5628860Courtesy of GENERAL MOTORS COMPANY

    Exhaust Gas Recirculation Pipe (1) - Remove

  20. Exhaust Gas Recirculation Pipe Seal (2) - Remove and DISCARD
  21. Exhaust Gas Recirculation Cooler Inlet Pipe Gasket (3) - Remove and DISCARD
  22. GM5624867Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) @Nitrogen Oxides Sensor - Disconnect

  23. Wiring Harness Retainer (2) @Charge Air Cooler - Remove [3x]
  24. Electrical Connector (3) @Charge Air Cooler - Disconnect [2x]
  25. Engine Wiring Harness (4) - Position aside
  26. GM5216906Courtesy of GENERAL MOTORS COMPANY

    Wiring Harness Retainer (4) @Charge Air Cooler - Remove

  27. GM5211335Courtesy of GENERAL MOTORS COMPANY

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

  28. Charge Air Cooler Outlet Air Hose (2) - Remove
  29. GM5211389Courtesy of GENERAL MOTORS COMPANY

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

  30. Charge Air Cooler Inlet Air Hose (2) - Remove
  31. GM5217133Courtesy of GENERAL MOTORS COMPANY

    Charge Air Cooler Bolt (1) - Remove [4x]

  32. GM5217156Courtesy of GENERAL MOTORS COMPANY

    Reposition charge air cooler (1) with coolant hoses attached.

  33. GM5187895Courtesy of GENERAL MOTORS COMPANY

    Upper Intake Manifold Brace Nut (1) - Remove [3x]

  34. Reposition the upper intake manifold bracket (2) with the nitrogen oxides sensor.
    GM5185361Courtesy of GENERAL MOTORS COMPANY
  35. Turbocharger Heat Shield Bolt (1) - Remove [2x]
  36. Turbocharger Heat Shield Nut (2) - Remove
  37. GM5185371Courtesy of GENERAL MOTORS COMPANY

    Reposition the turbocharger heat shield (1) with the exhaust gas recirculation temperature sensor attached.

  38. GM5219691Courtesy of GENERAL MOTORS COMPANY

    Release the retaining spring (1).

  39. Intake Manifold Resonator (2) - Remove
  40. GM5138644Courtesy of GENERAL MOTORS COMPANY

    Turbocharger Bracket Bolt (1) - Remove

  41. GM5499646Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Bracket Nut (1) - Remove [2x]

  42. Engine Wiring Harness Bracket (3) - Reposition
  43. GM5217555Courtesy of GENERAL MOTORS COMPANY

    Oil Filler Tube Support Stud (1) - Remove

  44. GM5499644Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Air Bleed Hose Clip (1) - Remove

  45. GM5217574Courtesy of GENERAL MOTORS COMPANY

    Charge Air Cooler Bolt (1) - Remove [5x]

  46. Charge Air Cooler Bracket (2) - Remove
  47. GM5149255Courtesy of GENERAL MOTORS COMPANY

    Reposition harness and hoses, and connect electrical connectors as needed.

  48. Exhaust Gas Recirculation Pipe Bracket Bolt (1) - Remove
  49. Exhaust Gas Recirculation Pipe Bracket (5) - Remove
  50. GM5135087Courtesy of GENERAL MOTORS COMPANY
    WARNING:

    The noise cancelling foam component MUST be replaced if it has been exposed to engine fluids. Failure to replace the noise canceling foam component that has been exposed to engine fluids may result in an engine fire resulting in catastrophic engine damage, and possible injury or death.

    Camshaft Housing Cover Insulator (1) - Remove

  51. Front Wheelhouse Liner-Left Side - Remove - Front Wheelhouse Liner Replacement
  52. GM5153904Courtesy of GENERAL MOTORS COMPANY

    Fuel Feed Pipe Clip Bolt (1) - Remove

  53. GM5153945Courtesy of GENERAL MOTORS COMPANY

    Fuel Pump Fuel Feed Hose (1) - Reposition

  54. GM5154341Courtesy of GENERAL MOTORS COMPANY

    Diesel Fuel Separator Bracket Bolt (1) - Remove

  55. GM5154342Courtesy of GENERAL MOTORS COMPANY

    Diesel Fuel Separator (1) - Reposition

  56. GM5156838Courtesy of GENERAL MOTORS COMPANY

    Disconnect the 2 high pressure diesel fuel feed to rail pipe fittings (1) from the high pressure diesel fuel pump.

  57. GM5156840Courtesy of GENERAL MOTORS COMPANY

    Remove the 2 high pressure diesel fuel feed to rail pipe bracket bolts (1).

  58. GM5156855Courtesy of GENERAL MOTORS COMPANY

    Remove the 2 high pressure diesel fuel feed to rail pipe bracket bolts (1).

  59. Unclip the fuel injector fuel return pipe retainer (2).
  60. GM5156867Courtesy of GENERAL MOTORS COMPANY

    Disconnect the 2 high pressure diesel fuel feed to rail pipe fittings (1) from the high pressure diesel fuel injection rail.

  61. GM5628961Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Do NOT reuse the high pressure diesel fuel feed pipes.

    High Pressure Diesel Fuel Feed to Rail Pipe (2) - Remove and DISCARD