Auto Zone.com has a repair info guide to help you out. Be advised that is a lot of work.
Chain
Chain.
The 24L in a 2010 Dodge Avenger has a timing chain, not a belt. The timing chain should last the life of the car.
Yes
Belt
It has a timing chain.
It can.
No, it has a chain.No, it has a chain.
Your 2.5 liter V6 engine has a timing BELT ( also , it is an interference engine )
replace it. when they go bad you can't fix them.
2.4L and 2.7L have a chain. 3.5L has a belt.
It will last the life of the engine. It shouldn't need replaced.