The NP-249 uses Dextron II or ATF Plus/Type 7176 (or their superceding fluid type) automatic trans fluid.
Dextron III
That is 80 weight.
ATF. Usually Dexron III. For heavy duty (off roading) I use 80/90 gear oil. Royal Purple is the best in my opinion
ATF+4
Valvoline 80W-90 gear oil.
Motorcraft MERCON automatic transmission fluid is used in the transfer case for the 4x4 and all wheel drive systems
The automatic transmission takes Motorcraft MERCON - " V " - automatic transmission fluid The transfer case takes Motorcraft MERCON - automatic transmission fluid
Motorcraft MERCON automatic transmission fluid in the transfer case ( according to the Owner Guide )
The Pontiac Grand AM does not have a transfercase. A transfercase is on a 4x4 truck or on a All Wheel Drive vehicle.
Yes.
There are 2 threaded plugs on the back side of the transfer case. The upper one is the fill plug, lower one is the drain plug.
According to my Haynes Ford Explorer repair manual : ( MERCON automatic transmission fluid is used in the transfer case of a 1993 Ford Explorer )