2003 mitsubishi montaro sport ,w, trany problems

2003 mitsubishi montaro sport ,w, trany problems
the problem is intermentant.

the D light on the instrument panle does not light up half the time, and its a tricky son gun to get in gear.

when you first start driving there is an RPM range fomm 2,000 to 3,000,that shakes the hole truck. as you progres down the road that range in which the vehical vibrates becomes larger and larger 2,000 to 3,500 , 2,000 to 4,000.
The trany will only shift if you baby the throtel, but normaly it will only shift if you get the RPM's above 3g ,let off the gas feed, feel it shift then get back on the throtle.

i tried to pull the codes for the 03 mitisubishi montaro sport,W, the first time i got: abs, po155,(o2 sensor), and some kind of short to front, and short to left.
the second time: there was no data link, and i couldnt get ****.

the following lights are lit on the dash: check engine , transmission, abs, and front wheel

any help, or ideas would be great