One problem related to crankshaft position sensor has been reported for the 2001 Saturn LS. The most recently reported issues are listed below.
Saturn lw300 crankshaft position sensor failure (3/05) - replaced body control module failure (11/05) - replaced mass air flow sensor failure (11/05) - replaced oil cooler leak (11/05) - resealed battery failure (just over 1 year old, 11/05) - replaced under warranty.