Your AODE tranny is computer controlled for shift points. I'd pull codes to see if any pop up for a bad sensor, etc. I'm not familiar with the SN stuff, so maybe I'm way off on this, if it'll show codes for the tranny or not. Someone will jump in here and let you know. Good luck, and welcome to the forum. Hope we can help you out.
306 with all bolt ons, letter cam, ported E7's, T5 swap, full exhaust, 3:55's, 2" drop, and the worst paint you'll ever see or feel.
Dyno'd 300/316, 2745lbs-track scale
Best ET………12.4@108, 1.66 60ft on 8" ET Drags.
24 mpg (combined)