There are 3 “Generations” of Saturn S-Series:
(Generations denote major changes. These major changes could be seen in the exterior design, interior design, and electronics systems)
Exterior design generations
SC (coupes):
1st Gen: 1991-1996
2nd Gen: 1997-2000
3rd Gen: 2001-2002
SL (sedans):
1st Gen: 1991-1995
2nd Gen: 1996-1999
3rd Gen: 2000-2002
SW (wagons):
1st Gen: 1993-1995
2nd Gen: 1996-1999
3rd Gen: 2000-2002
Interior design generations:
1st Gen: ’91-’94
2nd Gen: ’95-’99
3rd Gen: ’00-’02
Electronics systems generations:
1st gen: ’91-’94 (OBD1)
2nd gen: ’95-’99 (OBD2)
3rd gen: ’00-’02 (OBD2 with new PCM/BCM design)