Where is the circuit breaker for power locks and trunk release on a 1994 buick park avenue?

There isn't a dedicated circuit breaker for just the power locks and trunk release on a 1994 Buick Park Avenue (or most cars, for that matter). These functions are typically controlled by fuses, not circuit breakers.

To find the relevant fuses, you'll need to consult your owner's manual. It will have a fuse box diagram showing which fuse(s) control the power locks and trunk release. There's usually one fuse box under the hood and another inside the car (often under the dashboard). Check both locations.

If your owner's manual is unavailable, you can often find a downloadable version online by searching for "[Year] Buick Park Avenue owner's manual PDF".