I was told they had an upgrade for the 1999 computer , not sure on this one trying to get more info and maybe have the chip re flashed !?!?
To through another curve I have a Super Chip installed , My mechanic says the only other code he has found is one pertaining to the cam and the chip !
Yes I am losing mileage , seems to shift into OD but with the slightest acceleration it drops back down to 3rd
