Yes, only if they have the same engine.
already have it loose
Best bet is to replace the radiator.
Remove and bring to radiator repair shop or replace at 1-800Radiator
yes
You need to replace the thermostat and flush the system of crud.
how to change radiator 1995 jeep grand Cherokee Laredo
Yes
How do I replace water pump on 2004 jeep grand Cherokee
The thermostat on a 1996 Jeep Grand Cherokee 5.2L is replaced by draining the coolant and disconnecting the radiator hose. The housing is then unbolted, the thermostat removed, and a new unit put in its place.
Should be a plug either at the bottom or rear of radiator
It is in front of the radiator.
It is built into the radiator.