V6 has a 42re V8 has a 46re
No.
A 1999 Dodge Ram transmission does not have an input speed sensor.
No
No
It comes with a 4L60E or 4L80E
The transmissions are the same. The torque converters are different.
No. The control solenoid and sensors are not the same.
It is inside the transmission, on the valve body.
You need to put a little more detail in. What engine do you have, and what engine did the 99 have?
You add the fluid down the dipstick tube.
Mopar ATF+4
A 1999 Ram automatic uses ATF+4.