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HiCustomer Thank you for asking your question on Just Answer.
Can you tell me what engine you have?
I have 2.2L (4 cylinder) and 3.0L (6 cylinder) list.
Here is the procedure for changing the water pump. This is a PDF file that you should be able to view on your computer and print. This should give you a good idea as to what is involved.
Replace Water Pump
The file is about 700 KBytes, so it might take a little while to get.
Please let me know if you need more information.
Take Care, Greg A.
Sorry about that. Yes, there is a special tool, as shown in the diagrams below.
Here is the tool in place, right before step 13 in the procedure.
According to my information, this should take about 2.7 hours by a "Moderately Skilled" service tech. This assumes that they have all the right tools and are fairly comfortable with the vehicle.
If it was me, I would have it done by one of the better techs at the shop, so that it would fit within the "flat rate" time I mentioned.
I personally do not have the tool shown above (at home), so I would take it in to have it done by the pros. That also gives you a warranty on the work that is done, just in case.
I hope this helps.