GM 6L80 Transmission Information Thread

[S33k3r]

The 6.2 rigs got the 10-speed starting in 2018.

 

[blackelky]

Oh God I just got a 1-2 flare or surge on my tahoe. Or 2-3 not sure i was too pissed.

 

[NickTransmissions]

Oh God I just got a 1-2 flare or surge on my tahoe. Or 2-3 not sure i was too pissed.

It's more than likely a 2-3 flare if you're flaring in that part of the drive cycle though a 1-2 flare could happen as well. A 1-2 flare happens when the 2-6 clutch fails to come on timely when TEHCM commands a 1-2 upshift. Mechanical problems with the 2-6 clutch are relatively rare. Most often, a 1-2 flare is either TEHCM or valve body. 2-3 flares are usually base welds at the 3-5-R drum leaking, causing 3-5-R clutch pack slip & burn-up.

 

[blackelky]

It's more than likely a 2-3 flare if you're flaring in that part of the drive cycle though a 1-2 flare could happen as well. A 1-2 flare happens when the 2-6 clutch fails to come on timely when TEHCM commands a 1-2 upshift. Mechanical problems with the 2-6 clutch are relatively rare. Most often, a 1-2 flare is either TEHCM or valve body. 2-3 flares are usually base welds at the 3-5-R drum leaking, causing 3-5-R clutch pack slip & burn-up.

thank God for warranties. How much time I got doc? only does it sometimes under load when cold.

 

[S33k3r]

thank God for warranties. How much time I got doc? only does it sometimes under load when cold.

What ATF are you running?

 

[NickTransmissions]

thank God for warranties. How much time I got doc? only does it sometimes under load when cold.

That's impossible to predict as it can let go at any time, to be honest. I'd recommend trying to diagnose it asap so you'd know for sure if you do have to yank it and it doesnt strand you some place. Warranty will take care of the rest...fluid-wise you should have Dex 6 full synthetic in there (the 8-speeds take a different type of fluid).

 

[blackelky]

What ATF are you running?

The oem stuff just had the filter changed and about 7 quarts.

 

[blackelky]

That's impossible to predict as it can let go at any time, to be honest. I'd recommend trying to diagnose it asap so you'd know for sure if you do have to yank it and it doesnt strand you some place. Warranty will take care of the rest...fluid-wise you should have Dex 6 full synthetic in there (the 8-speeds take a different type of fluid).

Ok I'll have the dealer do a flush the transmission filter was done about about 2k miles ago so only 5-7 quarts came out.

 

[Doug118]

To convert an awd trans to rwd, is it as simple as using the Camaro tail housing extension and having a driveshaft made? I live in south florida so there’s absolutely no need for awd but if it’s a huge hassle then I’ll just remove all the awd stuff and buy a 2wd trans. Just trying to avoid pulling the trans

 

[89Suburban]

To convert an awd trans to rwd, is it as simple as using the Camaro tail housing extension and having a driveshaft made? I live in south florida so there’s absolutely no need for awd but if it’s a huge hassle then I’ll just remove all the awd stuff and buy a 2wd trans. Just trying to avoid pulling the trans

I would like to know this as well. Also what changes need to be made to stop codes from being thrown from missing components, actuators etc. If the AWD even has such things. Do the AWD have any selection options for different traction modes like full 4wd lock, or a low range?