what would ignition switch have to do with tranny not shifting properly.
when you are driving in beginning its fine shifts normally as it heats up
truck feels like it is straining to go but if u shift it to low and then back into regular drive once you are doing about 25-30 it runs at that speed fine until u have to stop again
so you think that its electrical from what i am describing and not the transmission itself
as i said power test came up fine is there anyway to see if pcm is working properly
i don't know if this matters but just replaced the engine no codes come up on the engine
and no check light