The engine computer is also the voltage regulator.
this is called transmission fluid
Not a definitive answer for your question, but according to the title for my 1988 B350, my van's scale weight is 4176.
Pull the transmission dip stick out and read it. It will tell you what fluid to use and how to check it. With the older Chrysler automatics, they want the engine running and the transmission in neutral to get an accurate reading. ATF+4
Take off your grill and radiator , radiator support ,hood and pull engine out the front of van.
Press the set buttons for hour and minute.
you have to put the front of van on ramps and take off the grill header and bumper with van on ramps it will give you clearance to pull engine with cherry picker
The easiest is to disconnect all the usual things, and drop the subframe from the van.
can not have to pull the engine
chain
If your meaning the cube van then you have to pull the cab right off the frame.
Under hood in power distribution center near battery