Question about 2003 Cadillac Deville

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I need to replace a water pump in a 2003 cadillac devile

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  • Mark Carrington
    Mark Carrington May 11, 2010

    Water pump replacement is a relatively straight forward job on the northstar. What do you need to know?

  • yadayada
    yadayada May 11, 2010

    WHAT IS THE QUESTION

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Weel its on the drivers side of the engine and ruuns off of a small belt that runs off the camshaft,there is a specialty socket for the waterpump that will make this job much easier,the socket is about $50

Posted on Sep 05, 2009

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Posted on Jan 02, 2017

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If you need to replace the water pump, not easy as you need a special tool to remove and insert the pump.

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Per Chilton's Repair Manual: You're dealing with aluminum so pay careful attention not to exceed recommended torque.

4.5L And 4.9L Engines
  1. Disconnect the negative battery cable.
  2. Drain and recycle the engine coolant.
  3. Remove the air filter assembly. Disconnect and remove the coolant recovery tank.
  4. Disconnect and remove the cross brace.
  5. Remove the water pump pulley bolts.
  6. Remove the serpentine drive belt and the water pump pulley.
  7. Remove the water pump-to-engine bolts and the pump.
84203050.gif Water pump assembly—4.5L and 4.9L engines
To install:
  1. Clean the gasket mounting surfaces.
  2. Place a new gasket over the water pump studs.
  3. Install the water pump. Tighten the water pump bolts as follows:
    1. Water pump-to-engine Torx® bolts to 30 ft. lbs. (40 Nm)
    2. Water pump-to-engine stud nuts to 5 ft. lbs. (7 Nm)
    3. Hex head bolts to 30 ft. lbs. (40 Nm)
    4. Remaining hex head bolts to 5 ft. lbs. (7 Nm).
  4. Install the water pump pulley. Install the water pump pulley bolts finger-tight.
  5. Install the serpentine drive belt.
  6. Tighten the water pump pulley bolts to 22 ft. lbs. (30 Nm).
  7. Install the cross brace.
  8. Install and connect the coolant recovery tank. Install the air filter assembly.
  9. Connect the negative battery cable.
  10. Fill cooling system and check for leaks. Start the engine and allow it to come to normal operating temperature. Recheck for leaks. Top-up the coolant.

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