First, disconnect the negative battery cable.
Next, drain the engine cooling system.
Relieve the belt tension at the tensioner and remove the accessory drive belt.
Remove the water pump pulley.
Remove the water pump mounting bolts.
Once the bolts are removed, the pump will come off.
Reverse sequence to replace.
As far as the thermostat, if you follow the upper radiator hose back to the engine, it will attach to the thermostat housing. Once the coolant is drained, remove the hose then unbolt the housing. Once the bolts are removed, the housing will come off and the thermostat will be under it. Make sure to pay attention to the positioning of the thermostat so you replace the new one the same way.
I have a question, are you sure the water pump is bad? I ask because it is hard to access it due to space limitations. Let me know why you feel it is bad. Also, the engine size is either a 3.5 or a 3.9. If you have other specific questions, let me know which one you have. There is no 3.8L in this vehicle.
Saturday, December 6th, 2014 AT 6:10 PM