Remove water pump from 2002 cadalac

Please see my tip at http://www.fixya.com/cars/r5929960-s_thermostat . These are generic instructions. Specific instructions from autozone.com for your car are pasted below. If you get stuck, please get back to me.

1. If equipped with an automatic transmission, remove the exhaust manifold.
2. Drain the cooling system.
3. Remove the thermostat housing to water pump feed pipe bolts.

Remove the thermostat housing to water pump feed pipe.

Fig. Remove the thermostat

Remove the thermostat.

To install:

1. Install the thermostat.

Install the thermostat housing to water pump feed pipe.

Fig. Install the thermostat housing to water pump feed pipe

1. Install the thermostat housing to water pump feed pipe bolt and tighten the thermostat housing to water pump feed pipe bolt to 89 lb inches (10 Nm).
2. If equipped with an automatic transmission, install the exhaust manifold.
3. Fill the cooling system.

1. Drain the cooling system until the coolant is below the level of the water pump. 2. Remove the drive belt guard. 3. Loosen the water pump pulley bolts. 4. Remove the drive belt. 5. Remove the water pump pulley bolts. 6. Remove the water pump pulley. 7. Remove the water pump bolts. 8. Remove the water pump. 9. Remove the water pump gasket. 10. Clean the water pump mating surfaces. Installation Procedure 1. Install the water pump gasket. 2. Install the water pump Notice: Refer to Fastener Notice in Service Precautions. 3. Install the water pump bolts. Tighten the bolts to 10 Nm (89 inch lbs.). 4. Install the water pump pulley. 5. Install the water pump pulley bolts. 6. Install the drive belt. Tighten the water pump pulley bolts to 25 Nm (18 inch lbs.). 7. Install the drive belt guard. 8. Fill the cooling system

hi from uk the 626 water pump is not driven by timing belt but by another drive belt so easy to change after removal of under wing cover to access /see pump b4 you remove drive belt would advise you to slacken off the water pump pully 1st while it is held by drive belt to prevent turning ? then with belt off /pully removed pump is more accessable hope this helps?

It could be the fuel pump pressurizing the system. Does the sound stop after a few seconds? If it is the fuel pump then it is a normal sound. Fuel pumps will resonate in the tank when you are low on gas, making them sound louder. If it is more than a hum then I would get it checked out.

Hi:
Once you get the timing belt removed, the water pump is relatively easy to remove. It has approx 5 bolts.

Removal & Installation

2.2L Engine

1. Before servicing the vehicle, refer to the precautions section.
2. Disconnect the negative battery cable.
3. Drain the engine coolant.
4. Remove or disconnect the following:
   Exhaust manifold, if equipped with n automatic transaxle Right front wheel Splash shield Water pump sprocket access plate from the timing cover
   
   
   
   Fig. Remove the water pump sprocket access plate from the timing cover -2.2L engine
   
5. Attach Water Pump Sprocket Holding Tool J 43651to the sprocket using the access plate bolts to secure the tool to the engine front cover.
   Sprocket to water pump bolts Engine block to water pump bolt Engine front cover to water pump bolt Thermostat housing to water pump feed pipe 2 water pump to engine block bolts Water pump
   
   
   
   Fig. Water pump mounting-2.2L engine
   

To install:

1. Use a threaded stud in the water pump hub to align the hub to the water pump sprocket.
   Water pump and bolts Thermostat housing to water pump feed pipe Engine front cover bolt and engine block to water pump bolt. Tighten the bolts to 15 ft. lbs. (20 Nm) 2 of the water pump sprocket to water pump bolts
   
2. Remove the threaded stud.
   Last water pump sprocket to water pump bolt and tighten the sprocket bolts to 89 inch lbs. (10 Nm).
3. Remove the tool.
   Water pump sprocket access plate to the timing cover and tighten the bolts to 89 inch lbs. (10 Nm) Splash shield Right front wheel Exhaust manifold, if removed
4. Fill the cooling system.
5. Connect the negative battery cable.

2.4L Engine

1. Before servicing the vehicle, refer to the precautions section.
2. Disconnect the negative battery cable.
3. Drain the cooling system.
4. Remove or disconnect the following:
   WARNING Do not rotate the flex coupling more than 4 degrees or damage may occur. Oxygen Sensor (O 2 S) electrical connector Exhaust manifold heat shield Coolant inlet housing bolt through the exhaust manifold Exhaust manifold brace-to-manifold bolt Manifold-to-exhaust pipe studs Coolant inlet housing-to-water pump cover bolt Exhaust pipe from the exhaust manifold by pulling it downward Coolant inlet pipe from the oil pan Brake vacuum pipe from the camshaft housing Exhaust manifold from the cylinder head Heater hose from the heater outlet pipe Timing chain cover and tensioner Water pump cover-to-engine bolts 3 water pump-to-timing chain housing nuts Water pump and cover assembly Water pump cover from the pump
   
   
   
   Fig. Exploded view of the water pump mounting-2.4L engine
   

continue...

Removal & Installation 3.0L (2V) To Remove:

1. Drain the engine cooling system.
2. Loosen the water pump pulley.
3. Remove the bolt and the nut and position the roll restrictor bracket out of the way.
4. Remove the accessory drive belt.
5. Remove the generator.
6. Remove the bolt and the accessory drive belt tensioner.
7. Remove the nut, the bolt and the support bracket.
8. Remove the bolts and the water pump pulley.
9. Disconnect the water pump inlet hose and the crankshaft position sensor electrical connector.
10. Remove the bolts and the water pump, and clean the sealing surfaces

To Install:

1. Install the water pump. Tighten bolts in the sequence shown:
1. Tighten numbers 1-7 to 18 ft.-lbs. (25 Nm)
2. Tighten numbers 8-12 to 89 in.-lbs. (10 Nm)
3. Connect the crankshaft position sensor electrical connector and the water pump inlet hose
4. Install the support bracket.
5. Install the accessory drive shaft tensioner.
6. Install the generator.
7. Install the roll restrictor bracket, bolt and the nut.
8. Install the water pump pulley.
9. Install the accessory drive belt.
10. Connect the battery ground cable.
11. Fill the engine cooling system.

Water pump bolt torque sequence (3.0L (2V) engine)

take everything around your water pump of and use a metric 10 box end wrench

What size motor If it is a v6 most of them you are easy drian the radiator down take the pulley of the pump and you will remove the bolt and pump

the pulley comes out with the pump..remove 3 bolts in pump hub..remove all pump bolts and you will need to pry engine back toward driver's side to remove both together..