94 c1500 4.3 4l60e
swapped a slipping trans for a known good one. i know the guy that did the swap didn't unplug the battery for the swap. not sure if that makes a difference but i am now getting a code 22 low voltage to tps.
other than the slipping trans there were no codes or problems before the swap.
any ideas?

 

Clear the codes and drive it. If the code comes back you'll have to deal with that tps.

One has absolutely nothing to do with the other.

Allan