One problem related to brake disc caliper has been reported for the 2002 Saturn SL. The most recently reported issues are listed below.
I recently purchased my Saturn and replaced the brake pads and rotors it was fine then after 200 miles the brakes started grinding then would stop. Checked the calipers they were fine had to replace the rotors again due to the grinding brakes were fine. 2 weeks later same thing then stopped it starts and stops grinding when it wants.