you need to refer to your manual on this one, if you were to tow a 4x4 Chevy tracker i know that you have to put the transfer case in neutral as well as the transmission, if you do not have 4x4 just...
If it is an 4 cylinder engine,the spark plugs are directly on top,of the engine.if you'll look,you'll see,little black boxes,that has screws in them,remove the screws,and wiggle the box,while pulling...
standing facing the Tracker, in front, there is a big black hose looking thing connected to a black box. This box has 4 latches. And when you take it off...there is your air filter.
on the front of the engine you will see where the rad hoses connect. It is located on the lower one that has a pipe bolted to it. It is expensive like 30 -35$$