AOD Upshift

I use it as a loaner vehicle and I like shifting but some can't, won't or other
 

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If the AOD is stuck in first, most likely the forward clutch is welded up...does it go forward in neutral? there was some checks you could do to see, I can't remember what they were, but mine was new, and stuck in forwards...
 
The problem I had when my AOD's were not coming out of first was the valve body was getting contaminents... And the reason it would'nt shift ouf of OD was the governer had the same problem. this was using all new parts (converter included) and after having the housing and valve bodies cleaned. lasted 1 week. had identical problems to my old AOD which I did not use any parts from. Out it came and in went the 5 speed. If you are stuck on the AOD idea use some of the updates from the AOD-E. That is a much better tranny.