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09 2500- How Many People Have The 2-3 Shift Flair?

233monte

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233monte Enthusiast

233monte

Posted
Posted

6 speed trans. Only does it every now and then and only the first shift after start up. I know there is a TSB on this condition. Has anyone taken theirs back to have this fixed? I really dread letting the dealer rip apart my trans.

K20and2500HD Enthusiast

K20and2500HD

Posted
Posted

I had it until the latest update on my Predator fixed it. It is weird but never thought to much about it but it was annoying when it happened. I wouldn't worry about it, mine only did it once or twice a day if any at all, after warm ups and cool downs. I mainly think that it goes away with the more miles you put on it also, I know it has to do with torque mgmt., and that the tranny is still learning. IMO

Shatterz Enthusiast

Shatterz

Posted
Posted

My truck used to have this condition and it would happen all the time. Since about 9,000 miles it 2-3 flare has stopped and now I have a 3-4 shift flare (worse then the 2-3). Trips to 3 different dealers to try and replicate the problem have resulted in no progress. GM Customer Service Center is my next step. I shouldn't have to wait until it blows up to get this resolved, but that is exactly the response I am getting from the dealership retards.

 

To put it simply, I think the 6l90E trans has a lot of unresolved issues that GM is not thoroughly addressing. It is WAY overcomplicated and that usually equals problems in my experience. Never have I had a truck with such shifting problems like this one. This is coming from someone who has always believe that GM transmissions were the most reilable and well built.

 

I am so frustrated with this that I'd be willing to drive to GM powertrain (wherever they are in the country) and have the GM engineers tear into it and see what is wrong with this transmission.

5-0stank Enthusiast

5-0stank

Posted
Posted

I've gotten the flair only maybe 10-12 times since I owned my truck I would say. I'm not really too worried about it lol. After my buddy tweaked some of the settings w/ hp tuners, the trans/shifting is a lot better than stock.

  • 1 month later...
focijoe Enthusiast

focijoe

Posted
Posted

What exactly is a shift "flair" ? My tranny acts wierd after it shifts into 3rd. It almost feels like slight slipping. I took it to the dealer right after I bought it and a tech drove it and said everything was fine. Is this the shift "flair" ?

jandersinc Enthusiast

jandersinc

Posted
Posted

When it shifts from say 2nd to 3rd the RPM's will "flair" or shoot up briefly before getting into 3rd gear. Almost like it briefly hit neutral. Briefly slipping is another way to kind of describe what it feels like.

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