Shifting is rough the rmp will jump about 400 rpm in between every shif..also my speedometer does not light up completely. my chrome bumper is starting to rust right by the headlights where the plastic painted bumper is suppose to clip onto the chrome part of the bumper. thanks!

Shifting--sorry to tell you, but as a mechanic who has rebuilt MANY 4L60E transmissions, I can promise you that your transmission is dead and needs to be completely rebuilt. Tell the builder that as a minimum over a stock rebuild you want: A hardened input shaft, The Beast sun shell, all Alto Red Eagle frictions and full-thickness Kolene steels, a new reverse drum and an extra-wide Carbon Fiber power band, the Sonnax "Super Hold" 1-2 and 3-4 servos, the Sonnax Heavy Duty 2-3 Shift Valve, the Sonnax .490" Boost Valve, and the Transgo valve body seperator plate. This will cost about 600 bucks more than a stock build, but the new transmission will be bullet-proof and will last until you get rid of the truck.
You can replace the dash lights yourself; the cover snaps off the fron of the dash, there are a few 9/32nds bolts that hold the instrument panel onto the dash, and the bulbs replace from the rear.
The rust, well, you can use metal polish and a fine cotton scrap and polish it off--but it will come back; for chrome to rust, there is a defect in the dip, or a non-stainless metal in continuous contact with it.