01 Grand Am won't start

[gmtech1]

If it's happening when hitting bumps, you need to be checking connections, like grounds, on the motor and on the frame.

[thephantom1492]

Next time, start your own thread, don't steal other's threads that are also dead.

But yeah check for lose connections. Also check the crankshaft sensor wiring and harness (some car have 2 sensors I've hear).

Might want to use a test light to see if you get any sparks.

Might also want to remove the spark plug and see if they are wet (could be a flooded engine since you keep cranking (read dumping fuel))

Be sure that the battery terminals are well screwed (you shouln't be able to move them).

Also, check to be sure that no fuses are blow (who knows, doubtfull, but could happend).

But start by the sensors... some small animals love to chew on them, specially the section behind the engine.