while driving at 45mph, upon acceleration, engine slips out of gear and over-revs. then it will continue to slip out of gear momentarily. a code comes up as 'crankshaft position sensor' (code: PO335) thought it was the torque converter until i had the code read. Needless to say, i'm now confused.....any help? Thanx, Court66. 2001 Blazer auto-trans, V-6.