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HOMESERVICE MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 639 (ENGINE COOLING SYSTEM)REPAIR INSTRUCTIONSRADIATOR REPLACEMENT (LY7)REMOVAL PROCEDURE
1998 Chevrolet Suburban K2500, 7.4 J, Part Time

Removal Procedure

1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Removal Procedure
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
  1. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging in Heating, Ventilation and Air Conditioning.
  2. Drain the cooling system. Refer to Draining and Filling Cooling System .
  3. Remove the cooling fans with the cooling fan shroud. Refer to Cooling Fan Replacement - Electric (LA1)  or Cooling Fan Replacement - Electric (LY7) .
    4. Fig 1: Locating Radiator Inlet/Outlet Hose
    GM1462694Courtesy of GENERAL MOTORS CORP.
  4. Use J 38185  to reposition the hose clamp at the engine. See Special Tools and Equipment .
  5. Disconnect the radiator outlet hose from the engine.
  6. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  7. Use J 38185  to reposition the hose clamp at the radiator. See Special Tools and Equipment .
  8. Disconnect the radiator outlet hose from the radiator.
  9. Remove the radiator outlet hose.
  10. Disconnect the lower TOC line from the radiator. Refer to Transmission Fluid Cooler Line Quick Connect Fitting in Automatic Transaxle - 4T65-E.
  11. Lower the vehicle.
    12. Fig 2: Locating A/C Discharge Hose From Condenser Block
    GM628885Courtesy of GENERAL MOTORS CORP.
  12. Remove the nut which secures the A/C discharge hose to the condenser block.
  13. Disconnect the A/C discharge hose from the condenser block.
  14. Remove and discard the sealing washer.
    15. IMPORTANT: Cap or tape off the open A/C hose immediately to prevent system contamination.
  15. Cap or tape off the A/C discharge hose.
    16. Fig 3: Identifying Evaporator Inlet Tube To Condenser Block
    GM825404Courtesy of GENERAL MOTORS CORP.
  16. Remove the bolt which secures the evaporator inlet tube to the condenser block.
  17. Disconnect the evaporator inlet tube from the condenser block.
  18. Cap or tape off the evaporator inlet tube.
    19. Fig 4: View Of Radiator And Condenser Assembly
    GM825405Courtesy of GENERAL MOTORS CORP.
  19. Remove the radiator and condenser assembly.
  20. Remove the condenser tube clip bolt.
  21. Remove the condenser mounting bolts.
  22. Remove the condenser from the radiator.
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.