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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN K2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 4 (ENGINE MECHANICAL - 8.1L)REPAIR INSTRUCTIONSON-VEHICLE REPAIR INSTRUCTIONSENGINE REPLACEMENTREMOVAL PROCEDURE
2006 Chevrolet Suburban K2500, 6.0 U

Removal Procedure

2006 Chevrolet Suburban K2500, 6.0 USECTION Removal Procedure
WARNING: This page is about a different variant/trim than selected.
    Fig 1: Identifying Hood Hinge Normal And Service Position Bolt Holes
    GM310799Courtesy of GENERAL MOTORS CORP.
  1. Open the hood.
  2. Place fender covers over both fenders.
  3. Raise the hood to the service position, perform the following:
    1. Remove the hood hinge bolts (1).
    2. Raise the hood until vertical.
    3. Install the hood hinge bolts until snug in the service position (2).
    4. Fig 2: View Of Air Cleaner Outlet Duct
    GM700979Courtesy of GENERAL MOTORS CORP.
  4. Loosen the clamps at the throttle body and air cleaner.
  5. Remove the air cleaner outlet duct.
    6. Fig 3: View Of Battery Cables
    GM662092Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  7. Disconnect the positive battery cable.
  8. Remove the ignition coils. Refer to Ignition Coil(s) Replacement in Engine Controls - 8.1L.
    9. Fig 4: View Of Rear Of Engine Fuel Pipe Connections
    GM300360Courtesy of GENERAL MOTORS CORP.
  9. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure in Engine Controls - 8.1L.
  10. Disconnect the fuel feed and return pipes (1, 2) from the fuel rail. Refer to Quick Connect Fitting(s) Service (Metal Collar) in Engine Controls - 8.1L.
  11. Remove the air conditioning (A/C) compressor. Refer to Compressor Replacement (LR4, LM7, and LQ4) in Heating, Ventilation and Air Conditioning.
  12. Remove the radiator.
    13. Fig 5: View Of Throttle Actuator Control (TAC) Module Electrical Connector
    GM751290Courtesy of GENERAL MOTORS CORP.
  13. Disconnect the throttle actuator control (TAC) module electrical connector (1).
  14. Remove the vacuum lines from the engine, as required.
    15. Fig 6: View Of Ground Cable Bolt At Engine Block
    GM663475Courtesy of GENERAL MOTORS CORP.
  15. Remove the ground cable bolt at the engine block.
  16. Remove the generator. Refer to Generator Replacement (8.1L Engine) in Engine Electrical.
  17. Remove the engine electrical harness and tie out of the way.
  18. Raise and suitably support the vehicle with safety stands. Refer to Lifting and Jacking the Vehicle in General Information.
  19. Remove the starter motor. Refer to Starter Motor Replacement (8.1L Engine) in Engine Electrical.
  20. Remove the hoses from the power steering pump.
  21. Remove the exhaust manifold pipe. Refer to Exhaust Manifold Pipe Replacement (6.0L and 8.1L Engines) in Engine Exhaust.
  22. Remove the catalytic converter. Refer to Catalytic Converter Replacement (6.0L and 8.1L Engines) in Engine Exhaust.
    23. Fig 7: Identifying Six Studs & One Bolt Securing Transmission To Engine
    GM394446Courtesy of GENERAL MOTORS CORP.
  23. Remove the torque converter bolts.
  24. Remove the bolts from the transmission to the engine. Refer to Transmission Replacement in Automatic Transmission - 4L80-E.
  25. Remove the engine oil cooler lines from the engine block. Refer to Engine Oil Cooler Hose/Pipe Replacement (2WD) or Engine Oil Cooler Hose/Pipe Replacement (4WD) in Engine Cooling.
    26. Fig 8: View Of J 36857 At Right Cylinder Head
    GM66457Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.