Owner's manual: Dealer, Salvage Yard, E-Bay, and many on-line sites are sources. One good site is: http://www.samarins.com/maintenance/manual.html
The 2001 prizm has a timing chain.
Prizm's had a timing belt up until 1998 when they then switched to a timing chain.
1994 Geo Prizm has a timing belt.
it has a chain.
Chain
The '99 Chevy Prizm has a timing chain, not a timing belt, so it does not need to be replaced.
replacing serpentine belt on 2000 chevy prizm need help
belt
1998 uses a chain... earlier versions use a belt.
I have a 1992 Camry LE and its a belt
timing chain
it has a timing chain NEUTZ