i,m changing tbi units and the one i bought has a diferent throttle posion than mine which has a connection to butterflys 95 tahoe. will the one i am putting on work by changing the wires?

 

Yes or get an adaptor
https://www.ebay.com/itm/TPI-to-LT1-...I/151984619149

If I remember, the LT1, truck TBI, and maybe even the LS1 use the same TPS. Thirdgen TPI and TBI TPS I believe are the same and that adaptor should work.

 

TBI TPS--three wires in-line, or three in a triangle/circular connector.

 

The original had triangle plug and on bck side had slot connecting it to the tbi.
One i put on has three in row and no connection on back.
I installed it and since wires were same color cut triangle off and hooked them up.
Well that did.nt work.when i hit starter it turned little bit then went clunk. So i stopped right there.
Now what?

 

THAT part doesn't sound like a TPS problem to me.