see link below
No
About $500 to $600 for the belt, and another $150 or so for the water pump.
Yes
Planetnautique.com
see "how too replace water pump on 2002 Trailblazer"
How do I replace the water pump in my 1994 Saturn SL2 series standard twin cam.
carbertor
To change the water pump on a 2002 Saturn L200, first ensure the engine is cool and disconnect the negative battery cable. Drain the coolant from the radiator and remove the drive belt. Next, remove any components obstructing access to the water pump, such as the engine cover, and then unbolt the water pump from the engine block. Clean the mounting surface, install the new water pump with a new gasket, reassemble any removed components, refill the coolant, and reconnect the battery.
The water pump on a 94 Saturn S1 is replaced by removing the serpentine belt, engine accessories, and water hoses. The pump can then be unbolted from the engine block and a new pump put in place.
The water pump on a 1996 Saturn sl2 is located in the engine compartment. It sits below the AC compressor.
Approx. $1,000 USD from a Saturn dealer. You may want to also change the water pump at the same time.