If your 2003 Grand Am accelerates without pressing the gas pedal, the throttle plate may be stuck.
A person pressing the gas pedal.
what kind of car is it
If the engine is running it is burning fuel, whether the gas pedal is pressed or not.
kick down cable is stuck
it depends on how hard your pressing the gas pedal
Maybe you arn't pressing the gas pedal?
Many cars require you to press the gas pedal when starting the car. It's quite normal.
Try pressing on the gas pedal with more force.
Could be, a plugged fuel filter, a damaged catalytic converter,
On cars with a carburetor you must press on the gas pedal to activate the choke, cars with fuel injection do not have a choke so this is not necessary.
clogged or bad catalitic converter