Yes. There is a switch on the tranny. First, check switch wiring. Make sure it didn't become unplugged or damaged. You don't need a part #. Just call a parts store and ask for a new switch.
No, they will not interchange.
Pinched or blocked transmission cooling lines
Cherokee Laredo, no. Grand Cherokee Laredo, yes.
You add the fluid down the dipstick tube.
There is no such thing as a 2002 Cherokee Laredo. The last year for the Cherokee was 2001, and the last year it came with the Laredo trim was 1992. I have a 2003 Cherokee Laredo so this awnser makes no sense at all. Do you have a GRAND Cherokee Laredo? Those are still being made. They are not the same as the Cherokee.
the reverse switch in the transmission
No, they will not interchange.
No
A Cherokee would have the AW4. A Grand Cherokee would have a 44RE.
It is built into the radiator.
Chrysler 42RE.
The transmission solenoids are inside the transmission on top of the valve body.
The 4.0L has 42re The 5.2L has a 44re
Mopar ATF+4
42RE42RE
Pinched or blocked transmission cooling lines
A 1998 Jeep Grand Cherokee has a four speed automatic transmission.