I'm not sure about labor costs, but you can get a reman 6l80 for about $2500. But i have seen from Monster Transmission a built up one for around $5500. Somewhere around that price anyways. I would suggest if you are thinking about a new trans, if budget allows, get a built up one and never have to worry about it again. If I run into this down the road I will probably go this route. Sent from my SM-N975U using Tapatalk