Century, Grand Prix, Impala, Intrigue, Lumina, Monte Carlo, Regal 2001-2005

Removal & Installation

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3.1L & 3.4L Engines



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Accessory drive belt guard
     
    Water pump pulley bolts, loosen
     
    Accessory drive belt
     
    Water pump pulley
     
    Water pump

    Click image to see an enlarged view

    Fig. Water pump assembly mounting-3.1L and 3.4L engines

     

  6.  

To install:

  1. Install or connect the following:

    Water pump with a new gasket and torque the bolts to 89 inch lbs. (10 Nm)
     
    Water pump pulley and torque the bolts to 18 ft. lbs. (25 Nm)
     
    Accessory drive belt
     
    Drive belt guard
     

  2.  
  3. Fill the cooling system.
  4.  
  5. Start the engine and check for leaks, repair if necessary.
  6.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Accessory drive belt guard
     
    Water pump pulley bolts, loosen
     
    Accessory drive belt
     
    Water pump pulley
     
    Water pump
     

  6.  

To install:

  1. Install or connect the following:

    Water pump with a new gasket and torque the bolts to 89 inch lbs. (10 Nm)
     
    Water pump pulley and torque the bolts to 18 ft. lbs. (25 Nm)
     
    Accessory drive belt
     
    Drive belt guard
     

  2.  
  3. Fill the cooling system.
  4.  
  5. Start the engine and check for leaks, repair if necessary.

    Click image to see an enlarged view

    Fig. Water pump assembly mounting-3.1L and 3.4L engines

  6.  

3.4L Engine



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Accessory drive belt guard
     
    Water pump pulley bolts, loosen
     
    Accessory drive belt
     
    Water pump pulley
     
    Water pump

    Click image to see an enlarged view

    Fig. Water pump assembly mounting-3.4L engines

     

  6.  

To install:

  1. Install or connect the following:

    Water pump with a new gasket and torque the bolts to 89 inch lbs. (10 Nm)
     
    Water pump pulley and torque the bolts to 18 ft. lbs. (25 Nm)
     
    Accessory drive belt
     
    Drive belt guard
     

  2.  
  3. Fill the cooling system.
  4.  
  5. Start the engine and check for leaks, repair if necessary.
  6.  

3.5L & 3.9L Engines



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Partially drain the cooling system.
  4.  
  5. Remove or disconnect the following:
    NOTE
    The water pump is attached to the engine with both long and short bolts, be sure to note their locations.



    Surge tank outlet hose
     
    Drive belt
     
    Idler pulley
     
    Water pump pulley
     



    Water pump

    Click image to see an enlarged view

    Fig. Be sure to install the 5 long water pump bolts in the correct locations-3.5L engine



    Click image to see an enlarged view

    Fig. Water pump mounting-3.5L engine

     

  6.  

To install:

  1. Install or connect the following:

    Water pump using a new gasket and torque the bolts to 124 inch lbs. (14 Nm)
     
    Water pump pulley and torque the bolts to 106 inch lbs. (12 Nm)
     
    Idler pulley and torque the bolt to 37 ft. lbs. (50 Nm)
     
    Drive belt
     
    Surge tank hose
     

  2.  
  3. Refill the cooling system.
  4.  
  5. Start the engine and check for leaks.
  6.  

3.5L Engine



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Partially drain the cooling system.
  4.  
  5. Remove or disconnect the following:
    NOTE
    The water pump is attached to the engine with both long and short bolts, be sure to note their locations.



    Surge tank outlet hose
     
    Drive belt
     
    Idler pulley
     
    Water pump pulley
     



    Water pump

    Click image to see an enlarged view

    Fig. Be sure to install the 5 long water pump bolts in the correct locations-3.5L engine



    Click image to see an enlarged view

    Fig. Water pump mounting-3.5L engine

     

  6.  

To install:

  1. Install or connect the following:

    Water pump using a new gasket and torque the bolts to 124 inch lbs. (14 Nm)
     
    Water pump pulley and torque the bolts to 106 inch lbs. (12 Nm)
     
    Idler pulley and torque the bolt to 37 ft. lbs. (50 Nm)
     
    Drive belt
     
    Surge tank hose
     

  2.  
  3. Refill the cooling system.
  4.  
  5. Start the engine and check for leaks.
  6.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Partially drain the cooling system.
  4.  
  5. Remove or disconnect the following:
    NOTE
    The water pump is attached to the engine with both long and short bolts, be sure to note their locations.



    Surge tank outlet hose
     
    Drive belt
     
    Idler pulley
     
    Water pump pulley
     



    Water pump

    Click image to see an enlarged view

    Fig. Be sure to install the 5 long water pump bolts in the correct locations-3.5L engine



    Click image to see an enlarged view

    Fig. Water pump mounting-3.5L engine

     

  6.  

To install:

  1. Install or connect the following:

    Water pump using a new gasket and torque the bolts to 124 inch lbs. (14 Nm)
     
    Water pump pulley and torque the bolts to 18 ft. lbs. (25 Nm)
     
    Idler pulley and torque the bolt to 115 inch lbs. (13 Nm)
     
    Drive belt
     
    Surge tank hose
     

  2.  
  3. Refill the cooling system.
  4.  
  5. Start the engine and check for leaks.
  6.  

3.8L Engine



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Drain the engine coolant.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable.
     
    Drive belt
     
    Water pump pulley
     
    Power steering pump and move it aside
     
    Water pump

    Click image to see an enlarged view

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

     

  6.  

To install:

  1. Install or connect the following:

    Water pump using a new gasket and torque the long bolts to 25 ft. lbs. (34 Nm) and the short bolts to 16 ft. lbs. (22 Nm)
     
    Water pump pulley and torque the bolts to 115 inch lbs. (13 Nm)
     
    Power steering pump and torque the bolts to 25 ft. lbs. (34 Nm)
     
    Drive belt
     
    Negative battery cable
     

  2.  
  3. Fill the cooling system.
  4.  
  5. Start the vehicle and check for leaks, repair if necessary.
  6.  

5.3L Engine



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove the battery and battery tray.
  6.  
  7. Remove the drive belt.
  8.  
  9. Remove the water pump bolts (3).
  10.  
  11. Remove the water pump (1) and gasket (2). Discard the gasket.
  12.  
  13. Clean and inspect the water pump gasket mating surfaces.

    Click image to see an enlarged view

    Fig. Water pump mounting-5.3L engine

  14.  

To install:

  1. Install the water pump (1) and a NEW gasket (2).
  2.  
  3. Tighten the water pump bolts (3). Tighten the bolts to 89 inch lbs. (10 Nm).
  4.  
  5. Install the drive belt.
  6.  
  7. Install the battery tray and battery.
  8.  
  9. Fill the cooling system.
  10.  

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove the battery and battery tray.
  6.  
  7. Remove the drive belt.
  8.  
  9. Remove the water pump bolts (3).
  10.  
  11. Remove the water pump (1) and gasket (2). Discard the gasket.
  12.  
  13. Clean and inspect the water pump gasket mating surfaces.

    Click image to see an enlarged view

    Fig. Water pump mounting-5.3L engine

  14.  

To install:

  1. Install the water pump (1) and a NEW gasket (2).
  2.  
  3. Tighten the water pump bolts (3). Tighten the bolts to 89 inch lbs. (10 Nm).
  4.  
  5. Install the drive belt.
  6.  
  7. Install the battery tray and battery.
  8.  
  9. Fill the cooling system.
  10.  

 
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