I just got my transmisson rebuilt. I put the transmission in yesterday. I took it for a ride and the first couple of shifts we fine. But a few minutes later the car will stay in first gear. No shift into 2nd. Its has reverse, park, nuetral and drive, but only 1st gear in drive.I believe I have the TV cable adjusted right. I called the tranny shop and they said to make sure I didn't get the cable stuck between the bell housing. They also said crap might of got stuck in the tv valve. What do you guys think. I need help I had the car for a month and only drove it for 2 weeks. oh forgot to say its a 700r-4

 

who did the rebuild. if a shop did it then take it back and see what they say. did your VSS plug come loose. did you put fluid in it

 

check the governor, look to see if the gear is worn or broken, also check to see if it is sticking.

 

Your no shift conditions sounds like a stuck govenor. Its usually pretty easy get at and remove.
What you should do is drive by the Trans shop and have them take a look at it. Most shops will usually make any adjustments necessary for you free of charge if its one of thier over-the-counter rebuilds.
There are warrenty issues there, so be sure to bring it by and have them check it over.