The question you ask is too involved for a proper answer. You need to go to a car parts store, and get a repair manual for your car. They cost about $16.00 Or, go to a Public Library.
No it has an electric fan.
Yes it does.
It has a chain.
There is no fan belt, they have electric fans.
They have chains mate
It has a chain.
Chain.
54000 miles
For the 2.0L engine it is a chain-driven cam.
take it to a mechanic
No, it has a timing chain.
how do you do a timing belt on a Nissan primastar 2005 dci