There is no cam belt it is driven by a chain.
Never. The Saturn S series vehicles used a timing chain instead of a timing belt. And the chain is inside the engine, bathed in oil to keep it lubricated. The timing chain should be replaced whenever you rebuild the engine.
Chain
Belt
Chain.
It has timing chain and gears. NO BELT
It has a chain.
ChainChain
No, a timing chain.
There is a chain for a 97 528
It does not have a timing belt. It uses a chain.
belt driven