Where is it in a 1999 dodge carvan 2.4 motor is it by the battery?
If you are talking about the computer; they had better not try to put it there. It should be in the interior of the car. Chrysler does some strange things though. The Haynes manual will show you or the owner’s manual may accidently point it out. Twenty dollars isn’t a bad thing to waste if you have a spare one. The parts store might have one with the wrapper off and some don’t mind if you look in one that is wrapped.
I think the PCM is located near the battery. The BCM is under the dash.