Results 1 to 8 of 8

Thread: 2014 GMC Sierra Denali 6.2 losing the tune after turning key off a few times

  1. #1
    New Member
    Join Date
    Nov 2016
    Posts
    6

    Default 2014 GMC Sierra Denali 6.2 losing the tune after turning key off a few times

    I could sure use some help please. I can tune the truck with the autocal both for engine and transmission and drive it and stop and turn key off a few times or it sit overnight and its night and day difference, its gone. Its like running a file on a computer but if you don't save it, it won't be there the next day. Same thing with truck. Thanks very much appreciate any input. Thanks again.

  2. #2
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    26,506

    Default

    The tune can't be lost...

    but each time you flash it the trims get reset, and it runs ok while the trims have sufficient range to adjust...

    and then when the trims peg (i.e. they have run out of range), it runs badly.

  3. #3
    Lifetime Member
    Join Date
    Mar 2006
    Posts
    4,607

    Default

    Sounds like you need to ask your tuner for a retune. The shop will likely have you log a set of PIDs and send them the log file, then adjust the tune based on the logs.
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, starting the mods
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  4. #4
    New Member
    Join Date
    Nov 2016
    Posts
    6

    Default

    Thank you Joecar for your reply. This has been going on for a good while and I need to really get this solved. My tuner and I have been back and forth on this issue numerous times and I live in the Midwestern U.S. and they are on the West Coast in in the U.S., so they haven't been able to see personally the difference that I'm talking about I wish they could. I sure understand that the tune can't be lost but thats just my way of explaining best. Surely my truck can't or shouldn't be the only one wish this issue but anythings possible I suppose. Thank You So much for the reply I just really need to get this issue solved. Please feel free to drop me any input to solve this, Thank You Very Very Much Again.

  5. #5
    New Member
    Join Date
    Nov 2016
    Posts
    6

    Default

    Thank You ScarabEpic22 for your Reply, I sure do appreciate it alot. I've gotta get this issue taken care of ASAP. Feel free to give me any other input that You may have. Thanks Again Very much.

  6. #6
    Diesel Forum Support Site Admin
    Join Date
    Nov 2005
    Posts
    1,617

    Default

    Quote Originally Posted by Brad1 View Post
    Thank you Joecar for your reply. This has been going on for a good while and I need to really get this solved. My tuner and I have been back and forth on this issue numerous times and I live in the Midwestern U.S. and they are on the West Coast in in the U.S., so they haven't been able to see personally the difference that I'm talking about I wish they could. I sure understand that the tune can't be lost but thats just my way of explaining best. Surely my truck can't or shouldn't be the only one wish this issue but anythings possible I suppose. Thank You So much for the reply I just really need to get this issue solved. Please feel free to drop me any input to solve this, Thank You Very Very Much Again.
    Your tuner can diagnose the issue without being at your location using the logging features of AutoCal. The tuner should write you a configuration file to support logging of your controllers and select PIDs to reflect the key differences you are feeling.

    With that configuration you have a tool to measure what you feel in your truck. You should then log the vehicle straight after a flash, and secondly the next day when you notice the change. Your tuner can compare the 2 log files and decide what action to take with your tune files.

    Cheers
    Cindy

  7. #7
    New Member
    Join Date
    Nov 2016
    Posts
    6

    Default

    Thank You Cindy so much sorry so late replying, Storm knocked out power for 23 hrs. Thank You Again Cindy gonna do that soon.

  8. #8
    New Member
    Join Date
    Nov 2016
    Posts
    6

    Default

    As I had mentioned above my 2014 GMC Sierra Denali 6.2 has had problems with the tune staying programmed in the truck. after you turned the key off 2 or 3 times or it sat overnight the tune went to outer space or somewhere, every since I got it tuned. Anyway, Last week my Original Battery went bad so I replaced and the next day I put the tunes back in it again to try it. Something happened it has been a week and the Tunes are still in and its performing flawlessly. I don't get it. I'm tickled to death that this issue has been solved so far, but I wonder what made this happen. I was wondering if anyone else has had this issue. Thank You Very Much....

Similar Threads

  1. Hunting stock tune for 2014 denali truck os 12663390
    By Lsjuan in forum E39, E80, E82 & E92 SIDI ECM's
    Replies: 0
    Last Post: January 20th, 2016, 04:40 PM
  2. 2014-2015 gmc sierra 1500 tuning
    By hemi_power_3@hotmail.com in forum Petrol / Gas
    Replies: 0
    Last Post: November 2nd, 2015, 03:14 PM
  3. Cant open e92 2014 sierra tune file on v7
    By 400ss in forum E39, E80, E82 & E92 SIDI ECM's
    Replies: 8
    Last Post: April 10th, 2014, 10:51 AM
  4. Anyone Tune, Or have tunes for a 4.3L Vortec in a 2002 GMC SIERRA???
    By 01 silver bullet in forum Vortec V6/V8 Specific
    Replies: 1
    Last Post: June 7th, 2011, 09:34 AM
  5. Tune for my 2003 GMC Sierra 5.3L?
    By LM7Tuner in forum Gen III V8 Specific
    Replies: 6
    Last Post: September 8th, 2009, 05:11 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •