I have a suzuki sidekick and every time I hit a bump it dies. Any ideas?

Check all ignition connections:

. Ignition switch--check for wear and pitting.
. Ignition Control Module--crimp connectors with pliers, if necessary.
. Coil
. Battery cables--clean battery terminals and connections. Check condition of cables, particularly the main ground.

Basically, I would clean all electrical connections, apply dielectric grease, and ensure they are tight.