Transmission flush.. checklist!

[HiHoeSilver]

Find the post where a guy on here installed the Vette servo and then his transmission let loose. Make sure she's up to the task before doing the mod.

His let loose due to a faulty install.

 

[HiHoeSilver]

No need to put anything on the trans gasket , there are tabs on the pan that line it up and keep it in place . Get a new gasket it's peace of mine and easy to replace while everything is out .

I used the lubelocker and it was awesome.

 

[97audia4]

His let loose due to a faulty install.

There is no servo in the 6l80e it's electronic controlled no need for it .

 

[HiHoeSilver]

There is no servo in the 6l80e it's electronic controlled no need for it .

Good point, but the OP has an 07. I may be wrong, but I think that means he could have a 4l60.

 

[JonnyTahoe]

I bought the vehicle used 10/18 with 130K+ miles, 07 Yukon Denali w/6L80, it's not new anymore.

While I had it out, Why not? and, Preventative maintenance. Proactive not reactive. I'm a retired pilot so I come from the school of fix it BEFORE it breaks. Also I called a tranny expert who told me the TC is the weak link.
I also installed a new frt input shaft seal GM#24219390, and a new frt pump seal GM#24237531 while I was in that deep.

I never knew they could fail but after calling around they are replaced every time shops do a rebuild.

 

[Rocket Man]

There is no servo in the 6l80e it's electronic controlled no need for it .

It’s likely a 4l60. My 08 Silverado with a 4.8 has a 4l60. They were used in a lot of the NNBS.