To change the thermostat in a Saturn SL2, start by draining the coolant from the radiator. Next, remove the thermostat housing, which is typically secured by bolts, and take out the old thermostat. Clean the mating surfaces, install the new thermostat in the correct orientation, and reattach the housing. Finally, refill the cooling system with coolant and check for leaks.
http://youtube.com/watch?v=DrCSJpbDCiI
The Saturn sl2 does not have a timing belt, it has a timing chain. And under most conditions it does not need replacing.
I am prettysure you can change the motor as long as the body structure is the same and you have skill in this sort of thing.
1993 Saturn sl2
With tools
Are you asking how to??
Follow the top radiator hose to the engine, what that mounts to is the thermostat housing, remove this and there is your thermostat. * ** *** **** ***** Actually, on my 1997 SL2, the thermostat is on the bottom radiator hose. I would check the "Saturn Thermostat Pictures" link below, which also has installation and removal instructions.
on the passenger side of engine, below ac compressor. coming from bottom radiator hose.
....Suree. More information is needed
See link below
4 quarts with filter change
The Thermostat is inside the goose neck, just follow the hose from the radiator to the goose neck, unbolt the goose neck. Look inside the goose neck and you will find the thermostat.