To loosen the front brakes on a 1993 Chevy S-10 pickup, you'll need a
wrench (likely a 7/16" or 9/16" depending on the caliper design and bolt size) to loosen the caliper guide pin bolts. You might also need a
C-clamp or
brake caliper tool to compress the piston back into the caliper to allow for pad replacement or adjustments. Finally, a
socket set and a
ratchet might be useful to remove the caliper mounting bolts.
It's crucial to remember that you'll also need a jack and jack stands to safely lift the truck and secure it before working on the brakes. Safety should always be the top priority when working on your vehicle's braking system.