The timing chain does not have a service interval. It only needs replaced if there is a failure.
BELT
Chain
2.7L has a chain 3.2 and 3.5L have a belt. The chain does not have a service interval. Replace the belt around 100,000 miles
2.4L - belt 3.3L and 3.8L - chain
If the timing chain is off, you will probably have bent valves.
2002 and up four cylinders have a timing chain no belt.
You can replace a timing chain on a 2002 Pontiac Sunfire by visiting a local mechanic and having him take care of it for you. This is a tricky part to change yourself.
75000 miles
there is no timing belt -- only a timing chain that does not need to be replaced
Belt that must be replaced every 60,000 miles.
No.
Chain. if it is a 4.7 engine it has 3 All engines in a 2002 Ram 1500 have chains.