Dexron IV or V, meaning 4 or 5.
When changing fluids in a car, it is important to know the fluid capacity of the car. A 1999 Pontiac Grand AM holds about 5 quarts of transmission fluid.
DextronIII
Possibility of fluid foaming and eventual transmission failure
On a 1999 Mercury Grand Marquis : The automatic transmission fluid level dipstick is in the engine compartment , near the firewall , towards the passenger side of the engine
Mopar ATF+4
I have a 1999 Potiac Grand Am SE, and I cannot find the transmission dip stick to check the transmission fluid.
Remove transmission oil pan for access to filter. Replace pan gasket, fluid and filter
Add automatic transmission fluid through the dip stick tube. No kidding!
I have a 1999 Grand am se and it dont have a dipstick but it do have a red transmission fluid top on the right side of the 3400 sign that could be unscrewed but it don't have anything on it to check the fluid but you could stick your finger in it to see if its anything in it
Mopar ATF+4
Total capacity is 9 quarts
It doesn't have one but they can check the transmission fluid at any place that does oil changes