Transmission slipping again

I have a 2007 Yukon Denali AWD with 175k ± miles and I just had the transmission rebuilt and now, about a month or so after getting it rebuilt all the same issues are returning at an increasing rate. It started off driving fine, they I would feel a slight slip, then it got worse and while it’s not as bad as it was when it first started, it is none the less getting worse. Is there something I should tell these guys to look for? And yes they are transmission specialist that my beloved mechanic has used for years. It has a year warranty that I of course plan to take advantage of but I should mention I took it back to my mechanic and he in turn sent it back to them and of course at the time (about 2 weeks after getting it back the first time) they couldn’t find an issue. I’d like to get this straight since I live in Jersey and plan on driving it and a trailer of my stuff to Dallas. Any suggestions?

Yeah, take it directly to the transmission specialist and SHOW them your complaint. The hear-say chain is a sure way to confuse the issue. The direct route is the way to get this solved.

The last thing you want is a blown transmission in God-Knows-Where, Ohio needing a new trans that you’ll have to pay for to continue your trip.


I really like watching the videos from precision transmission. He loves to tear down “rebuilt” trans. Part A? Not changed. Part B? Not changed. And so on up to part xyz. He says customers pay $2000 for overhaul same as his charges but he actually replaces the known worn GM parts. He says normally he puts $1000 in parts into his trans. I swear every part he looks at has not been replaced.
The shop by my house charges 3500 for their overhauls though.

Yeah I paid 2450 for mine.

Yeah that’s my plan, I just wanted to know if there was something I should tell them to look for but I guess they really should know.