Thanks for the info Willwren , I do have T2V , I ordered the correct pump from Pine Ridge part # 2042832 it comes in tomorrow, still have to switch over the valve from the old pump.
They told me the complete unit is not avalable .
I had no luck with the GM dealer I will have to return the pump I bought from them , they were sure that it was the correct one but it wasn't.
The car is up on stands , can't seem to get it out from the bottom I've tried all sorts of ways very frustrating. I going to try and remove the pulley where it is .