2003 Pontiac Grand Prix Windshield wiper fluid

Check for 12V at motor connector with wash ON, if voltage then replace motor, if not then fuse.

then either the fuse is blown or the motor is faulty or possibly loose plug, the motor is usually located at the bottom of the reservoir, just take a quick peek and see if its plugged in then if it is, then check the fuse, then if all checks out, change the motor, its very simple to change. pretty self explanatory