Replacing Flexplate, what else is needed

[DFletch]

I have a 2008 Yukon XL Denali AWD with a 6L80 trans and a 6.2L engine. Since I’m going to be replacing the Flex Plate is there anything I should replace since I’m going to be in there? Also if there’s another Thread that already covered this please point me in its direction because I couldn’t find it

 

[SpareParts]

I would also change the rear main seal.

 

[wjburken]

I would also change the rear main seal.

^^^^^^^THIS^^^^^^^

Might also consider getting an upgraded torque convertor.

 

[Charlie207]

^^^^^^^THIS^^^^^^^

Might also consider getting an upgraded torque convertor.

I have a 2008 Yukon XL Denali AWD with a 6L80 trans and a 6.2L engine. Since I’m going to be replacing the Flex Plate is there anything I should replace since I’m going to be in there? Also if there’s another Thread that already covered this please point me in its direction because I couldn’t find it

This is a decent upgrade/replacement: https://www.summitracing.com/parts/ccv-tqbu60fhd

 

[DFletch]

Thank you for the advice everyone, it is greatly appreciated. Should I do anything with any of these parts as well, aside from the RMS?

 

[Doubeleive]

I have a 2008 Yukon XL Denali AWD with a 6L80 trans and a 6.2L engine. Since I’m going to be replacing the Flex Plate is there anything I should replace since I’m going to be in there? Also if there’s another Thread that already covered this please point me in its direction because I couldn’t find it

What's wrong with the flex plate?

 

[j91z28d1]

Thank you for the advice everyone, it is greatly appreciated. Should I do anything with any of these parts as well, aside from the RMS?View attachment 443747

yeah, what's called out as 519. the cover gasket. pretty common leak. most get the new plate with the rear main already installed too.

watch some videos, there's a little bit of alignment to watch our for. they sell alignment tools, but I'm not sure it's needed. Just make sure the rear main is centered before tightening down that plate



if you have it apart enough to get the oil pan down. replace that gasket too. they all leak at some point.

 

[DFletch]

What's wrong with the flex plate?

Recently took it into a transmission shop to get the transmission programmed and they said that the sound the trans was making was from a crack in the flex plate. They said that it shouldn’t be a problem for a while but it’ll be annoying as all heck lol. That’s why I want to replace it

 

[Tonyrodz]

Recently took it into a transmission shop to get the transmission programmed and they said that the sound the trans was making was from a crack in the flex plate. They said that it shouldn’t be a problem for a while but it’ll be annoying as all heck lol. That’s why I want to replace it

I've cracked 2 flex plates--2 different GM vehicles. It sux. Good move on replacing it now rather then later.

 

[strutaeng]

I replaced the transmission torque converter lock-up O ring and front main seal when I did the RMS on my 06 Suburban LQ4/4L80e.

Just ensure torque converter is seated all the way in when reinstalling it.