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And update for the better? Clunk be gone?

Ryan698

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Z45 Senior Enthusiast

Z45

Posted
Posted

If I remember correctly there should be something on the trans itself to confirm it's assembly plant..

The window sticker (lower rh corner) will tell you where the engine and trans were built.

 

DSC00341_zpsvozxlpcu.jpg

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DPetry94 Enthusiast

DPetry94

Posted
Posted

Yes, but you should still have it done as it addresses a possible transfer case shifting issue in cold temperatures

I don't have auto 4wd in my truck, I have a floor shifter. I don't think it would apply to my truck then, correct?
GsBowtie Enthusiast

GsBowtie

Posted
Posted

That's correct as far as I'm aware as your t-case should be manually shifted (i miss those days! ) i didn't know that was even an option on these new trucks.

No Tyme Senior Enthusiast

No Tyme

Posted
Posted

The window sticker (lower rh corner) will tell you where the engine and trans were built.

 

DSC00341_zpsvozxlpcu.jpg

WOW! THANKS FOR THIS!

I knew there was a way to find out and just wasn't quite sure how. This is good info to know.

DPetry94 Enthusiast

DPetry94

Posted
Posted

That's correct as far as I'm aware as your t-case should be manually shifted (i miss those days! ) i didn't know that was even an option on these new trucks.

Haha yeah, whenever anyone sees it they always like it because it is simple and reliable!
JimmyVal Enthusiast

JimmyVal

Posted
Posted

So has everyone's shifting gone back to how it was before the update? It sounded like it was going to help a lot, but if it doesn't last then I won't even bother.

I must be an exception. I've put over 1000 miles on my truck since the update and it still shifts fine. On rare occasion it gets confused between 2nd and 3rd when I let off the gas in mid shift, but otherwise, cold or hot, it's like driving a different truck. Mine was built in March 2014.

 

I agree with the comment from Greg, you should get the update done regardless.

werked Enthusiast

werked

Posted
Posted

I had about 5000 trouble free miles then....now it acts like spooked horse during acceleration and clunk during deceleration. Last oil change the dealer said I didn't have any updates that needed to be done....will definitely be bringing this up and asking for something to be done on the next oil change in a few weeks.

 

Sent from my Note 4

redwngr Senior Enthusiast

redwngr

Posted
Posted

I don't have auto 4wd in my truck, I have a floor shifter. I don't think it would apply to my truck then, correct?

 

 

That's correct as far as I'm aware as your t-case should be manually shifted (i miss those days! ) i didn't know that was even an option on these new trucks.

 

NQG Transfer case, with floor-mounted shifter
It's still the transfer case on base Sierra, and on WT, LS and 'Silverado Custom'.
The Autotrac transfer case, NQH, is not available on those trim levels.
  • 1 month later...
5150dude Enthusiast

5150dude

Posted
Posted

I have an appointment scheduled for this Saturday. I am going to revert to my stock ECM and TCM tunes using my Autocal.

 

Then after the new update is installed, I am going to scan the ECM and TCM tunes. I will then send those files over to the folks at Blackbear to compare to my originals and see if there was any difference. I will report back with my findings.

Looking forward to hear what you find out.

Silverado-Hareek Senior Enthusiast

Silverado-Hareek

Posted
Posted

My truck was amazing UNTIL I did this update. (September 2013 built truck) Now it shifts like all of the problem trucks I hear described in this forum. Basically the only way to make it shift smoothly is with slow gradual acceleration and really early breaking with a gradual slow to a stop. Any type of normal driving and this thing has the RPM rev flare when upshifting and a clunk through most gears downshifting. I'm thinking when I have some time this weekend I'm going to try the fuse pull again to put it into "learn mode" and see if I can drive for a few days and get it to reprogram its shifting parameters.

fondupot Senior Enthusiast

fondupot

Posted
Posted

Looking forward to hear what you find out.

 

Little late to the game. aye? I posted an update earlier in the thread. the Transfer case update did not effect the TCM or ECM tunes.

5150dude Enthusiast

5150dude

Posted
Posted

 

Little late to the game. aye? I posted an update earlier in the thread. the Transfer case update did not effect the TCM or ECM tunes.

Haha.Yeah I notice that later. Thanks.

 

Little late to the game. aye? I posted an update earlier in the thread. the Transfer case update did not effect the TCM or ECM tunes.

Haha.Yeah I notice that later. Thanks.

JUSTINASS Enthusiast

JUSTINASS

Posted
Posted

i have had the update for a while...i still find that it shifts better than before...however it is nothing like it should be in my opinion...

i want it to drive / shift like my 08 sierra and my 01 tahoe...like a normal driving truck.

im at 37k miles and i want to get it tuned soooo bad, yet i am still worried about powertrain warranty...ugh

chevyfranky Enthusiast

chevyfranky

Posted
Posted

i have the update since November 15 and still feel the Truck runs and shifts much better then before the update.

funny that some of you feel it opposite.

i had a Diablew custom tune on the ECM and TCM before the update and it was not much more power then now!

When i went for the update, i had made the stocktune back on. for sure. And the Truck was lazy and searching gears.

on the way home aferter the update it needed about 100 KM to run better and better. i´m happy so far.

Just a few weeks ago i tryed to scan the update on my Diablo, but it did not copy the TCM stuff!!??

so i went back to the GM tune

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