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
chain
there is no timing belt. it is a timing chain and doesn't need replacement unless it is damaged.
The 1997 Buick Park Avenue does not have a timing belt. It has a timing chain.