Replacing Flexplate, what else is needed

[Doubeleive]

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

What required the transmission to be programmed? Sorry just curious

 

[DFletch]

What required the transmission to be programmed? Sorry just curious

No problem, the transmission was replaced but never programmed, I found it it needed to be programmed when the tow mode wasn’t working lol

 

[Doubeleive]

No problem, the transmission was replaced but never programmed, I found it it needed to be programmed when the tow mode wasn’t working lol

Hmm, never heard of that normally the transmission will not work unless it is programmed to the vin, tow mode is standard and is just a momentary ground to the bcm, shouldn't need programming for tow mode to work. But maybe I am missing some information?

 

[Doubeleive]

@NickTransmissions ever hear of tow mode needing to be programmed separately?

 

[donjetman]

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

here what I changed when I did the job 6 yrs and 68k miles ago:
Installed rear main seal & cover – Dorman 635-518 - $43
https://www.tahoeyukonforum.com/threads/rear-main-seal-job-pan-etc-07-yukon-denali-6-2.108334/
Performed GM TSB # 10-06-01-008M:
https://f01.justanswer.com/ebrock63...il+Consumption,+MIL+ON,+Engine+Runs+Rough.pdf
and used Gunk Motor Medic $5 to do the piston combustion chamber soak, replaced:
Valve cover driverside – GM# 12570427 - $117
Oil pan gasket – GM# 12612350 - $36
Oil pickup o-ring – Felpro 72401 or GM 12584922 - $9
Torque Converter – P4646 (gopnh.com) Precision- $218
Tranny front pump seal – GM# 24237531 - $30
Tranny Input shaft seal – GM# 24219390 - $10
AFM Deflector – gm#12639759 - $8
Trans cooler line 1 – ACDelco 15779543 - $16
Trans cooler lines 2 – ACDelco 25999420 - $56
Trans cooler clips- ACDelco# 24205103 - $10
Trans cooler gasket - $7
Front lower plastic cowl - $31
Starter – 6757N - $60
dogbone/barbell rear oil galley seal