I am assuming you already have the timing chain off the vehicle, and you are looking for the timing marks. if not, please note, there is no manual adjustment on the timing chain. I have included a picture of the correct timing placement on my website http://thecommi.angelfire.com/index.html under Timing Chain. I hope this helps you.
The DOHC SL2 has a timing chain.
Timing chain
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 Saturn sl2 does not have a timing belt, it has a timing chain. And under most conditions it does not need replacing.
It does not work because it has a timing chain instead.
The 4 cylinder Saturn's all had timing chains.
Timing BELTS are outside the engine, run dry, and have no external lubrication. Timing BELTS should be replaced according to the manufacturers schedule. But the SL2 is not equipped with a timing belt, it uses a timing chain. Timing chains are internal, well lubricated, and designed to last as long as the rest of the engine. You shouldn't need to replace the timing chain until you rebuild the engine.
It's under the front housing. You need to take the front pulley and everything that's in the way, THEN you can get to the timing chain.
the chain keeps the camshaft/valves in time with the crankshaft in order for combustion to take place
No. There is no adjustment. The timing chain tensioner is an oil pressure driven device that adjusts the chain tension as needed. It is located on the pivot guide behind the timing chain cover.
timing cannot be altered. It is done by the PCM I think he/she meant the timing marks for the chain. No car today can have the time adjusted mechanically. You need a book for that. Go to the library if you don't find it here. in the internet