How does the fuse box open on a 2002 Pontiac grand am?

under the dash or in the glove box

look in the glove compartment on left hand side should be a little door. if not it would be under the dash board by the brake peddle. if not there, look under the hood for the relay.

The fuse box is located under the hood. There is component map printed on the inside of the cover. This tells you on your model where the fuse or relay is located

It's under the hood, on the driver's side, under a square, black box with a lightning symbol on it. Loosen the flower-shaped screw that holds the lid of the box down, remove the lid, flip it upside down and when you look at the inside of the lid, you'll see a map of all your car's fuses. There's also a fuse diagram on the very end of the dash, but it's accessible only when you open the driver's side door. When you're driving, that end of the dash is blocked by the closed door.

I don't know if this will work for you, but you might want to try what works for other vehicles turn the ignition key to the run position not start push down on the gas pedal three times slow then turn off the key. Again, this works for several other GM vehicles, hopefully it works for yours.