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
Replacing Flexplate, what else is needed
- Thread starter DFletch
- Start date
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SpareParts
Full Access Member
I would also change the rear main seal.
wjburken
Supporting Member
Charlie207
Full Access Member
What's wrong with the flex plate?
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.
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
Resident Resident
I've cracked 2 flex plates--2 different GM vehicles. It sux. Good move on replacing it now rather then later.
strutaeng
Full Access Member
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.
Just ensure torque converter is seated all the way in when reinstalling it.
