Always replace the timing chain, sprockets and tensioner rails whenever you remove the head.
The S series Saturn does not use a timing belt; all four cylinder Saturn's use a timing chain.
You are correct that the SL2 uses a timing chain. However, since it uses a timing chain it does not need to be replaced as does the timing BELT. In general, a timing chain should last the life of the engine.
The V6 uses a timing belt. The 4 cylinder uses a timing chain.
All of the 4 cylinder Saturns used a timing chain. The V6 engines used a timing belt.
How much does it cost for labor to change a timing chain in a 2001 Alltima ?
You don't. It has a Timing Chain
this specific year came with a timing belt instead of a chain, even though it has the v6 engine, which surprised me as well
There is no belt to change; it uses an internal timing chain.
Unless you have other problems, you should only need to change the timing chain whenever you rebuild the engine or remove the head or have other needs to take the front off the engine.
the 2001 does not have a timing belt,instead a timing chain,which does not required replacement as often as belt
There is no external timing marks on 2001 Saturn.
It does not have a timing belt, it has a timing chain that requires no maintenance.