1995 Chevy Astro Tranny wont shift into high gear

Heres the scoop: After replacing a heaterhose (w/ metal tube) I put everything back together and the transmission doesnt shift into high gear. The speedometer does not register speed while moving and the antilock brake light stays on.
The batter was disconnected for 2 days while waiting on the heater hose from dealer.
I had takin the van to a shop to get it on an analyser but not able to communicate with it. The shop sugeested changeing the speed sensor on transmission so I did but no change at all. Still no speedometer, no shifting to high and anti lock light stays on.
Anyone ever experience this sort of problem and had it fixed. I sure would appreciate some info here.
UnkaJoe