New 6.2/ 8 speed. Stage 1-2 shift.

m3n00b · February 18, 2016

So yesterday morning I started my truck up cold, had 490 miles on it. Pulled out of the driveway slowly and the trans shifted from 1 to 2 so slowly that it allowed the revs to climb 2-3k higher in neutral causing a jolt when it finally made it into 2nd gear.

Anyone else have this happen?

-tapa

joshc64311 · February 18, 2016

Yep sounds like a flair shift. Mine does it when it is cold

m3n00b · February 18, 2016

Yep sounds like a flair shift. Mine does it when it is cold

Never experienced this on any of my other autos. Is it something to be concerned about?

-tapa

joshc64311 · February 18, 2016

GM says it is normal. Let me know if you hear differently

robvas · February 18, 2016

Hard to see but mine did the same thing

https://www.youtube.com/watch?v=kUB96IcLe1s

07Softail · February 19, 2016

yes they all have the crappy shifting program problem... even the 6speeds.

RT

emeryz28 · February 19, 2016

If I remember that 8 speed transmission isn't supposed to fully be out of "learn mode" until around 1000 miles. Mine shifts much better now that I am at 1500 miles than it did when I first got the truck, although I never had the flare shift. I do live in a warm climate so that might be part of it

Willshire · February 19, 2016

I can't imagine an eight speed with dual exhaust. bahhhhhh!, Bahhhh!, bahhh!, bahhh! bahhhhhh!, Bahhhh!, bahhh!, bahhh! LMAO

m3n00b · February 20, 2016

If I remember that 8 speed transmission isn't supposed to fully be out of "learn mode" until around 1000 miles. Mine shifts much better now that I am at 1500 miles than it did when I first got the truck, although I never had the flare shift. I do live in a warm climate so that might be part of it

Thanks for the info. Been driving around in M7 in town. I'm in socal and it's been 90 here so cold isn't the issue.

-tapa

Silver ice 6.2 · February 22, 2016

I can't imagine an eight speed with dual exhaust. bahhhhhh!, Bahhhh!, bahhh!, bahhh! bahhhhhh!, Bahhhh!, bahhh!, bahhh! LMAO

Who makes a lamb muffler?

Willshire · February 22, 2016

Who makes a lamb muffler?

What does dual exhaust sound like if you had to type it? Lol

Silver ice 6.2 · February 22, 2016

What does dual exhaust sound like if you had to type it? Lol

Lmao...

redwngr · February 27, 2016

Mine doesn't do it on upshift, but I still have the occasional harsh downshift.

Badass69 · February 27, 2016

My first shift from a cold start is always a slow soft one that would probably flare if I were on the throttle. It hasn't changed one bit in 15000 miles so I don't really care. Same for the delay from park.... it annoys me but again... not enough to care. The trans clunks the odd the time but otherwise shifts really good so I don't want anyone playing with it.