8 Speed trans
03-22-2018, 08:47 AM
#24
TECH Regular
My denali now does it every so often, if i try to speed up in between shifts, ill feel the transfer case clunk away. Lol
03-22-2018, 04:18 PM
#25
TECH Junkie
GM is so behind with nothing to compete with a RC F150 5.0 10spd. Probably not a big seller anyway except to a truck nut like me.
03-23-2018, 08:23 AM
#26
TECH Apprentice
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Heard some interesting news today. A friend of mine was trying to do a lemon law on his truck with the 8 speed and gm today him they are working on a recall. That's all they told him. Hopefully they've figured out the problems and will be correcting it soon. Really want another Denali.
I have 2015 6.2 8 speed 4wd.
They put a new torque convertor in it at low mileage to fix poor shifting and clunks.
Worked fine since and it is tuned as well.
I would prefer a 6 speed but I don't think you can get one with a 6.2 past 2015.
There where a few 2014 and early 2015 6.2's that had them but they are hard to find.
I have a bud with a 2015 6.2 6 speed.
They put a new torque convertor in it at low mileage to fix poor shifting and clunks.
Worked fine since and it is tuned as well.
I would prefer a 6 speed but I don't think you can get one with a 6.2 past 2015.
There where a few 2014 and early 2015 6.2's that had them but they are hard to find.
I have a bud with a 2015 6.2 6 speed.
I bought a 15 denali buyback and fixed the trans under warranty. Works flawlessly. One thing to note, '15 & 16 have 5yr/100k, 17+ have 5yr/60k Powertain warranty.
03-24-2018, 04:56 PM
#29
That is sort of the goal of "adaptive shift"; you tell it how long you want the shift to take and it does the rest. If you have a "lazy" clutch pack it will keep increasing pressure until it hits its target. It does this automatically, so to "train it" you just need to drive around for a while.
