GM Full-Size Trucks 1988-1998 Repair Information

Radiator

Print

REMOVAL & INSTALLATION




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.

Gasoline Engines

See Figures 1, 2, 3 and 4

  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.
  18.  



Click image to see an enlarged view

Fig. Fig. 1: Remove the radiator upper panel fasteners



Click image to see an enlarged view

Fig. Fig. 2: Remove the radiator upper panel



Click image to see an enlarged view

Fig. Fig. 3: Disconnect the transmission cooler lines

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.  



Click image to see an enlarged view

Fig. Fig. 4: After the fasteners are removed, lift the radiator from the vehicle

Diesel Engines
early model vehicles
  1. Drain the cooling system.
  2.  
  3. Remove the air intake snorkel.
  4.  
  5. Remove the windshield washer bottle.
  6.  
  7. Remove the hood release cable.
  8.  
  9. Remove the upper fan shroud.
  10.  
  11. Disconnect the upper radiator hose.
  12.  
  13. Disconnect the transmission cooler lines.
  14.  
  15. Unplug the low coolant sensor wire.
  16.  
  17. Disconnect the overflow hose.
  18.  
  19. Disconnect the engine oil cooler lines.
  20.  
  21. Disconnect the lower radiator hose.
  22.  
  23. Remove the brake master cylinder. See Brakes .
  24.  
  25. Remove the fasteners securing the radiator, then remove the radiator from the vehicle.
  26.  

To install:
  1. Position the radiator at its mounting points and install its retainers. Tighten to 71 inch lbs. (9 Nm).
  2.  
  3. Install the brake master cylinder.
  4.  
  5. Connect the lower radiator hose.
  6.  
  7. Connect the engine oil cooler lines.
  8.  
  9. Connect the overflow hose.
  10.  
  11. Engage the low coolant sensor wire.
  12.  
  13. Connect the transmission cooler lines.
  14.  
  15. Connect the upper radiator hose.
  16.  
  17. Install the upper fan shroud.
  18.  
  19. Install the hood release cable.
  20.  
  21. Install the windshield washer bottle.
  22.  
  23. Install the air intake snorkel.
  24.  
  25. Fill the cooling system.
  26.  

late model vehicles

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.

  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.
  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.  

 
label.common.footer.alt.autozoneLogo