How do you change the timing chain on a 2001 Isuzu trooper?

to change timing chain is pretty involved if you are not mechanically inclined take it to a mechanic. you need to remove radiator, water pump and anything else like alternator a/c pump etc to give you access to front of engine. then remove timing case cover remove timing gears and chain. replace with new ones at correct settings put engine back to ther now if your engine is an over head cam there are more instructions