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water pump swap question

This is a discussion on water pump swap question within the General Help forums, part of the LSx Technical Help Section category; Is there a sticky on changing my water pump on my 99 SS if not how hard is it, and ...

  1. #1
    Senior Member doberman 152's Avatar
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    water pump swap question

    Is there a sticky on changing my water pump on my 99 SS if not how hard is it, and what to look for while changing it out.

  2. #2
    None Shall Pass Knight's Avatar
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    Step 1
    Remove the drain plug to the block coolant and the knock sensor. Place a drain pan underneath the radiator. When the engine is cool, drain the cooling system from the radiator into the pan.

    Step 2
    Disconnect the negative battery cable.

    Step 3
    Take apart the electrical connector from the cooling fan and disconnect the intake air temperature sensor electrical connector and the mass airflow sensor electrical connector.

    Step 4
    Remove the air intake duct, the air cleaner assembly and both cooling fan assemblies.

    Step 5
    Take apart the water pump, the inlet hose, the water outlet and the outlet hose.

    Step 6
    Remove the air cleaner assembly, both cooling fan assemblies, the drive belt tensioner pulley and the drive belt.

    Step 7
    Disconnect the inlet hose and the vent hose and the radiator.

    Step 8
    Loosen and remove the water pump pulley and water pump bolts and remove both parts from the engine.

    Attach the New Pump

    Step 1
    Install the drain plug.

    Step 2
    Put in the new water pump, equipped with a new gasket, tightening the bolts to 22 foot pounds on the year 2000 or higher and 18 foot pounds (25 Nm) on the 1999 models.

    Step 3
    Reattach the water pump pulley, tightening the bolts to 18 foot pounds (25 Nm).

    Step 4
    Reattach and reinstall all components in reverse order to their removal, tightening the belt tensioner pulley bolts to 37 foot pounds (50 Nm) and the air cleaner assembly bolts to 106 inch pounds (12 Nm).

    Step 5
    Reattach the negative battery cable and refill the cooling system. Start the car and check for leaks when the engine reaches normal operating temperature.

  3. #3
    Senior Member doberman 152's Avatar
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    Cool thanks, thats an all day project for me.

  4. #4
    Life in the Fast lane sunsetorangess's Avatar
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    Met. Sunset Orange
    01 SS

    Shouldnt take long at all, Personaly i would change the thermostat while your in there. Few dollar insurance but either way its your call. Also ensure you get all of the old gasket material off the block.
    J
    2001 SS, Its not the car its the Driver that matters....

  5. #5
    Senior Member doberman 152's Avatar
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    Quote Originally Posted by sunsetorangess View Post
    Shouldnt take long at all, Personaly i would change the thermostat while your in there. Few dollar insurance but either way its your call. Also ensure you get all of the old gasket material off the block.
    J
    Ok thanks

  6. #6
    Member Blue28's Avatar
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    1999 Camaro Z28

    When I changed my water pump I didn't touch/remove the cooling fans assembly, or the pump pulley to remove it from the car, but I did remove the throttle body.

  7. #7
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    2000 formula

    i did not have to remove TB.......but had to remove fans

  8. #8
    Senior Member doberman 152's Avatar
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    Quote Originally Posted by Knight View Post
    Step 1
    Remove the drain plug to the block coolant and the knock sensor. Place a drain pan underneath the radiator. When the engine is cool, drain the cooling system from the radiator into the pan.

    Step 2
    Disconnect the negative battery cable.

    Step 3
    Take apart the electrical connector from the cooling fan and disconnect the intake air temperature sensor electrical connector and the mass airflow sensor electrical connector.

    Step 4
    Remove the air intake duct, the air cleaner assembly and both cooling fan assemblies.

    Step 5
    Take apart the water pump, the inlet hose, the water outlet and the outlet hose.

    Step 6
    Remove the air cleaner assembly, both cooling fan assemblies, the drive belt tensioner pulley and the drive belt.

    Step 7
    Disconnect the inlet hose and the vent hose and the radiator.

    Step 8
    Loosen and remove the water pump pulley and water pump bolts and remove both parts from the engine.

    Attach the New Pump

    Step 1
    Install the drain plug.

    Step 2
    Put in the new water pump, equipped with a new gasket, tightening the bolts to 22 foot pounds on the year 2000 or higher and 18 foot pounds (25 Nm) on the 1999 models.

    Step 3
    Reattach the water pump pulley, tightening the bolts to 18 foot pounds (25 Nm).

    Step 4
    Reattach and reinstall all components in reverse order to their removal, tightening the belt tensioner pulley bolts to 37 foot pounds (50 Nm) and the air cleaner assembly bolts to 106 inch pounds (12 Nm).

    Step 5
    Reattach the negative battery cable and refill the cooling system. Start the car and check for leaks when the engine reaches normal operating temperature.
    why should you remove the drain plug to the block coolant and the knock sensor, would it hurt it if i don't?

  9. #9
    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    Quote Originally Posted by doberman 152 View Post
    why should you remove the drain plug to the block coolant and the knock sensor, would it hurt it if i don't?
    You don't have to do that...in fact I'm not even sure I understand what "remove the drain plug to the block coolant and the knock sensor" means or accomplishes.

    edit: I think he meant to say remove the block coolant drain plug (which you can skip that step if you want). Not sure about the knock sensor??
    Last edited by Cutlass; 05-03-2010 at 07:15 PM.

  10. #10
    Senior Member tatertot91's Avatar
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    Sunset Orange Metalic
    2001 Camaro SS

    We did it on a friends car and the fans stayed on and it went by pretty quick

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