Nikki

recently changed the transmission in my 2000 suburban, now the speedo is not working, abs light is on. Will not go into...

I am a mechanic which is why I am stumped, the trans has been pulled out, checked, and placed back in. Computer is throwing only one code which is the vss sensor. Replaced that but still no luck. Would like to add that I put a new computer in today. I am not getting any voltage to the sensor but cannot find any reason for it?