So I have a 2001 Blazer, I just did the PWM to Batt. Reference conversion on the alternator, which solved alot of voltage twitching problems but showed me one other slight problem

Under hard acceleration (merging into detroit freeways), the transmission will not shift and I noticed is that the voltage gauge drops all the way down to the 1/4 mark (11.5V) before the transmission will shift and the voltage gauge will go back to its normal resting place of 1 notch above center (~14.6V).

I have no error codes for the transmission just the stupid P0410 A.I.R. Pump crap