96 suburban

i have a 1996 suburban that i had a rebiult trans put in and now it has no power. anyone know what could be wrong?

Transmission trying to operate in two gear ranges at the same time? with the bare bones info you have given all I can come up with is far fetched WAG’s.

sorry, when i go in drive its like i have to mash the gas to get it to go. but if i put it in low and shift manualy it has power that way. even when i put it in reverse it has no power. can i ajust it some way?

No adjustment on that transmission. There is an internal problem. Its going to have to come out and be disassembled.

transman