GM Camaro/Firebird 1993-1998 Repair Guide

Water Pump

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REMOVAL & INSTALLATION




CAUTION
When draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.

3.4L ENGINE

See Figures 1 and 2

  1. Disconnect the negative battery cable.
  2.  
  3. Drain the cooling system into a suitable container.
  4.  
  5. Remove the air intake duct.
  6.  
  7. Remove the top coil of the ignition coil pack.
  8.  
  9. Loosen the tensioner pulley bolt/screw.
  10.  
  11. Disconnect the heater hose from the water pump.
  12.  
  13. Loosen the water pump pulley bolts/screws.
  14.  
  15. Unfasten the power steering bracket bolts/screws.
  16.  
  17. Remove the serpentine drive belt.
  18.  
  19. Remove the water pump pulley.
  20.  
  21. Remove the power steering pump bracket and swing the bracket and pump aside. Do NOT disconnect the power steering lines from the pump.
  22.  
  23. Unfasten the water pump and engine front cover bolts/screws, then remove the water pump assembly from the vehicle.
  24.  
  25. Remove and discard the gasket and thoroughly clean the gasket mating surfaces.
  26.  



Click image to see an enlarged view

Fig. Fig. 1: Exploded view of the water pump mounting - 3.4L engine

To install:
  1. Position a new water pump gasket, then install the pump. Secure using all of the water pump retaining bolts/screws, except the bottom three, and tighten to 33 ft. lbs. (45 Nm).
  2.  
  3. Install the engine front cover bolts/screws and tighten to 16 ft. lbs. (21 Nm) for 1993-94 vehicles, or to 97 inch lbs. (11 Nm) for 1995 vehicles.
  4.  



Click image to see an enlarged view

Fig. Fig. 2: Water pump retaining bolt tightening sequence

  1. Install the three bottom water pump retaining screws and tighten to 89 inch lbs. (10 Nm).
  2.  
  3. Place the power steering pump into position and install the pump bracket.
  4.  
  5. Install the water pump pulley.
  6.  
  7. Install the serpentine drive belt.
  8.  
  9. Install the power steering pump bracket retaining bolts and tighten to 30 ft. lbs. (40 Nm).
  10.  
  11. Connect the heater hose to the water pump.
  12.  
  13. Install the top coil to the ignition coil pack.
  14.  
  15. Attach the electrical connector to the alternator.
  16.  
  17. Install the air inlet duct and air cleaner assembly.
  18.  
  19. Connect the negative battery cable.
  20.  
  21. Fill the cooling system. Start the engine and check for leaks.
  22.  

3.8L Engine

See Figure 3

  1. Disconnect the negative battery cable.
  2.  
  3. Drain the cooling system into a suitable container.
  4.  
  5. Remove the serpentine belt.
  6.  
  7. Disconnect the radiator inlet hose from the water pump.
  8.  
  9. Unfasten the water pump pulley bolts/screws and remove the pulley.
  10.  
  11. Remove the water pump pulley retaining bolts, then remove the pump from the vehicle.
  12.  
  13. Remove and discard the gasket and thoroughly clean the gasket mating surfaces.
  14.  



Click image to see an enlarged view

Fig. Fig. 3: Exploded view of the water pump mounting - 3.8L engine

To install:
  1. Position a new water pump gasket, then install the pump. Secure using the water pump retaining bolts/screws and tighten to 11 ft. lbs. (15 Nm), plus an additional 80 degree rotation.
  2.  
  3. Install the water pump pulley and retaining bolts. Tighten to 115 inch lbs. (13 Nm).
  4.  
  5. Install the serpentine drive belt.
  6.  
  7. Connect the radiator inlet hose to the water pump.
  8.  
  9. Connect the negative battery cable.
  10.  
  11. Fill the cooling system. Start the engine and check for leaks.
  12.  

5.7L ENGINE

See Figures 4, 5, 6 and 7

  1. Unplug the electrical connector from the cooling fan.
  2.  
  3. For 1993-95 vehicles, remove the right side cooling fan.
  4.  
  5. For 1996-98 vehicles, remove both cooling fan assemblies.
  6.  
  7. Place a suitable drain pan under the vehicle, then remove the block coolant drain plug and the knock sensor. Drain the radiator.
  8.  
  9. Install the drain plug and knock sensor.
  10.  
  11. Remove the air intake duct and air cleaner.
  12.  
  13. Disconnect the upper and lower radiator hoses from the water pump.
  14.  
  15. Remove the heater hoses from the water pump and throttle body.
  16.  
  17. Unplug the electrical connector from the coolant sensor.
  18.  



Click image to see an enlarged view

Fig. Fig. 4: After disconnecting the hoses, detach the connector from the coolant sensor

  1. Unfasten the retainers and reposition the ignition coil and bracket.
  2.  
  3. If equipped, remove the air pump and bracket.
  4.  
  5. Unfasten the water pump attaching bolts, then remove the water pump and discard the gasket. Remove the shaft coupling and water pump driveshaft seals, if necessary.
  6.  



Click image to see an enlarged view

Fig. Fig. 5: Unfasten the water pump retaining bolts ...



Click image to see an enlarged view

Fig. Fig. 6: ... then remove the water pump from the front of the engine

  1. Thoroughly clean the gasket mating surfaces
  2.  



Click image to see an enlarged view

Fig. Fig. 7: Exploded view of the water pump mounting and related components - 5.7L engine

To install:
  1. If removed, install the shaft coupling and water pump driveshaft using J 39089 or equivalent water pump driveshaft O-ring installer.
  2.  
  3. Install the water pump with a new gasket. Tighten the bolts to 30-32 ft. lbs. (41-43 Nm).
  4.  
  5. If equipped, install the air pump and bracket.
  6.  
  7. Reposition and secure the ignition coil and bracket.
  8.  
  9. Attach the coolant sensor connector.
  10.  
  11. Connect the heater hoses to the water pump and throttle body.
  12.  
  13. Connect the upper and lower radiator hoses to the water pump.
  14.  
  15. Install the air cleaner and air inlet duct.
  16.  
  17. Install the electric cooling fan(s), then attach the electrical connector.
  18.  
  19. Refill the cooling system.
  20.  
  21. Connect the negative battery cable, then start the engine and check for leaks.
  22.  

 
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