07 up Suburban trans info needed

[J Lee]

We are looking for an 07 up suburban 4x4 for my wife and need some info from those who either have one or are a tech at a dealership.

My mother has an 07 Suburban 1500 2wd and has already had the trans replaced under warranty once. Actually it took the dealership 3 tranmissions from GM to get one that worked. The first replacement trans wouldn't even get the truck off the rack, The second dropped a gear on the tech during the test drive, and the third trans now has less than 50,000 on it and is acting up. This is unacceptable to me, although I feel GM has never been able to build a decent OD trans. Ok the 4l80 or whichever one is the turbo 400 with an OD seems to be alright.


Saying all that to say I see the '10 and up Subs have a 6 speed auto trans are they holding up better? What is everyones experience with them?

Jeff Lee