how to replace water pump? on 2007 Saturn Outlook

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my 07 outlook just overheated for thr the first time. i am very mechanically inclined and i believr it is the waterpump or the thermostat is not opening. any advise would be greatly appreciated. if it is water pump i have replaced one in a vue how much more difficult is it in the outlook?
(1) Answer
I am a fan of getting repair manual from parts stores for this vehicle to answer your question. Usually about $25 to $30.