The correct automatic transmission fluid for that vehicle is written on the transmission dipstick.
Dexron III automatic Transmission fluid should be used in a 2000 Pontiac Grand AM. This can be picked up at almost any general store.
Dry....6.9 quats
On the top of the transmission there is a red cap. that cap comes off and you add fluid through there.
Fluid is added through the dip stick reciever.
You add the fluid down the dipstick tube.
It is ATF+4.
Mopar ATF+4
Unfortunately there isn't one.
Mopar ATF+4
Down the tube that holds the trans dipstick. - Use a special trans funnel, correct size, long and flexible, cheap in Walmart.
Automatic transmission, correct? The fluid is added through the dipstick tube, and you need a funnel to pull it off.