One problem related to brake drum wheel cylinder has been reported for the 2000 Saturn LS. The most recently reported issues are listed below.
The rear brakes slide off the wheel cylinder causing the brake peddle to go to the floor. If you look at the Saturn 2000 Ls1 the wheel cylinders has a flat surface which the brakes set on and after driving for a period of time the brakes slip off the wheel cylinder which then it goes to the floor. On the Saturn 2000 sl1 the wheel cylinder has slots on the wheel cylinder which holds the brakes in place,they need to have the wheel cylinders replaced for ones with slots. It is totally unsafe to drive. It happends about every 6 months having to take apart and fix one day someone will get killed if it hasn't happen yet.