1) Most times, when i hit the brake, i get a little "squeek", if i take my foot off and re-apply, it goes away, and does not come back until the next time i have to make a full stop again. any ideas what this might be?

2) I have had my transmission replaced once already. and i am getting similar symptoms to what i had before. if i am driving at around 5MPH and i accelerate slowly the trans seems like it wants to shift, but instead feels like it "absorbs" power, almost like if you pushed the clutch in slightly on a manual trans. once it hits 15-20MPH it "drops" and shifts really hard, and usally jerks the car slightly. it did this before, until it basicly toasted my trans. do you think my pcm is messed up? or what else could be causing this, because they got me a"rebuilt" tranny last time i took it in. i dont want to lose the truck for 3 days, just to have the problem come back 2 months later again.