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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1136 (Engine Cooling System) >> Repair Instructions >> Radiator Replacement (LY7 Standard Cooling) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the coolant. Refer to Cooling System Draining and Filling (GE 47716)  or Cooling System Draining and Filling (Static Fill) .
  2. Remove the electric cooling fan assembly. Refer to Engine Cooling Fan Replacement .
  3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
    4. Fig 1: View Of Condenser Lower Bracket Bolts
    GM1349581Courtesy of GENERAL MOTORS CORP.
  4. Remove the lower condenser mounting bolts.
    5. Fig 2: Locating Upper Condenser Mounting Bolts
    GM1349583Courtesy of GENERAL MOTORS CORP.
  5. Remove the upper condenser mounting bolts.
    6. Fig 3: View Of Transmission Oil Cooler (TOC) Mounting Bolts
    GM1350217Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Reposition the condenser to access the transmission oil cooler mounting bolts.
  6. Remove the transmission oil cooler mounting bolts.
    7. Fig 4: View Of Radiator Support Brackets
    GM1334986Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the lower retainer pins of the side air baffle from the radiator.
  8. Lower the vehicle.
  9. Remove the radiator support bracket bolts.
  10. Remove the radiator support brackets.
  11. Use J 38778  to remove the radiator/condenser upper support.
    12. Fig 5: Identifying Surge Tank Inlet Hose
    GM1334989Courtesy of GENERAL MOTORS CORP.
  12. Use J 38185  to disconnect the surge tank inlet hose from the radiator. See Special Tools . Reposition the hose aside.
    13. Fig 6: View Of Radiator Inlet Hose
    GM1334988Courtesy of GENERAL MOTORS CORP.
  13. Using J 38185  disengage tension on the radiator inlet hose clamp and disconnect the hose from the radiator. See Special Tools .
  14. Using J 38185  disengage tension on the radiator outlet hose clamp and disconnect the hose from the radiator. See Special Tools .
  15. Disconnect the upper retainer pins on the side air baffle from the radiator.
  16. Remove the radiator.
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