Sierra, Silverado 2006-2007

Removal & Installation

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CAUTION
Never open, service or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. Also, when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.

Diesel Engines



  1. Drain the cooling system.
  2.  
  3. Unfasten the upper fan shroud bolts and remove the upper fan shroud.
  4.  
  5. If equipped, remove the upper panel fasteners and the panel.
  6.  
  7. If equipped, remove the upper insulators and brackets.
  8.  
  9. Disconnect the radiator upper and lower hoses and, if applicable, the transmission coolant lines.
  10.  
  11. Remove the coolant recovery system line, if so equipped.
  12.  
  13. Remove the oil coolant lines, if equipped.
  14.  
  15. Remove the lower fan shroud bolts and the lower fan shroud.
  16.  
  17. Remove radiator from the lower brackets and insulators.

    Click image to see an enlarged view

    Fig. Exploded view of the radiator mounting-diesel engines

  18.  

To install:

  1. Install the radiator on the lower brackets and insulators.
  2.  
  3. Install the lower fan shroud and its retaining bolts. Tighten the shroud bolts to 71 inch lbs. (9 Nm).
  4.  
  5. Attach and tighten the engine oil cooler pipe bolts to 18 ft. lbs. (24 Nm) and the transmission oil cooler bolts to 19 ft. lbs. (26 Nm).
  6.  
  7. Attach the lower and upper radiator hoses..
  8.  
  9. Install the upper insulators, the upper fan shroud and fan shroud bolts. Tighten the shroud bolts to 71 inch lbs. (9 Nm).
  10.  
  11. Attach the coolant recovery system line, if so equipped.
  12.  
  13. If equipped, install the upper panel fasteners.
  14.  
  15. Refill the cooling system.
  16.  

Gasoline Engines



  1. Drain the cooling system.
  2.  
  3. Unfasten the upper fan shroud bolts and remove the upper fan shroud.
  4.  
  5. If equipped, remove the upper panel fasteners and the panel.
  6.  
  7. If equipped, remove the upper insulators and brackets.
  8.  
  9. Disconnect the radiator upper and lower hoses and, if applicable, the transmission coolant lines.
  10.  
  11. Remove the coolant recovery system line, if so equipped.
  12.  
  13. Remove the oil coolant lines, if equipped.
  14.  
  15. Remove the lower fan shroud bolts and the lower fan shroud.
  16.  
  17. Remove radiator from the lower brackets and insulators.

    Click image to see an enlarged view

    Fig. Exploded view of the radiator mounting-gasoline engines



    Click image to see an enlarged view

    Fig. Remove the radiator upper panel fasteners



    Click image to see an enlarged view

    Fig. Remove the radiator upper panel



    Click image to see an enlarged view

    Fig. Disconnect the transmission cooler lines

  18.  

To install:

  1. Install the radiator on the lower brackets and insulators.
  2.  
  3. Install the lower fan shroud and its retaining bolts. Tighten the shroud bolts to 71 inch lbs. (9 Nm).
  4.  
  5. Attach and tighten the engine oil cooler pipe bolts to 18 ft. lbs. (24 Nm) and the transmission oil cooler bolts to 19 ft. lbs. (26 Nm).
  6.  
  7. Attach the lower and upper radiator hoses..
  8.  
  9. Install the upper insulators, the upper fan shroud and fan shroud bolts. Tighten the shroud bolts to 71 inch lbs. (9 Nm).
  10.  
  11. Attach the coolant recovery system line, if so equipped.
  12.  
  13. If equipped, install the upper panel fasteners.
  14.  
  15. Refill the cooling system.

    Click image to see an enlarged view

    Fig. After the fasteners are removed, lift the radiator from the vehicle

  16.  

 
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