is your Transmission quirky?? - Page 3

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Cadillac Escalade, EXT and ESV Forum - 2007-2014 Discussion, is your Transmission quirky?? in Cadillac Escalade Forums; another TSB number that the dealer can find is TSB #09-07-30-004B because i am also having the same problem and ...
  1. #31
    Caddy2489 is offline Cadillac Owners Member
    Automobile(s): 2007 Escalade
    Join Date
    Feb 2012

    Re: is your Transmission quirky??

    another TSB number that the dealer can find is TSB #09-07-30-004B because i am also having the same problem and tried the one posted earlier in the thread but they couldn't find that so i looked on google and found that ...seems to describe the problem everyone is having perfect ... only problem im having now is because no error
    code has been tossed the dealer says it is running fine ... clearly it is not i do have an extended warrenty from
    GM but idk what to do next

  2. #32
    Leelabell1 is offline Cadillac Owners Member
    Automobile(s): 2007 Escalade
    Join Date
    Jul 2013

    Re: is your Transmission quirky??

    Mine was doing that then I lost the may want to haVe it checked. It cost me $4000.00 to replace and GM would not compensate nor back their product. I have an 07 escalade

  3. #33
    wwceaton is offline Cadillac Owners Fanatic
    Automobile(s): 2007 Escalade base
    Join Date
    Jul 2012

    Re: is your Transmission quirky??

    Quote Originally Posted by shore View Post
    I know this sounds like an odd question but I don't know how better summarize it. It doesn't feel wrong it just feels odd.

    Strong pedal acceleration and it shifts fine. Smooth and predictable.

    On light driving, each time it shifts it lets off power and then picks up. Almost like massive Tq management. 2nd and 3rd shifts seem to be the worst about this.

    Another thing, driving highway speeds, 75mph or so, going to pass someone, thing drops 2-3 gears to get going. No hills or anything odd, seems the more aggressive I am with the pedal the quicker it responds and goes but if I'm gentle(mpg) it feels like a slug.

    I'm wondering if this is all centered around an overly aggressive Tq management system or this is just normal.

    Sure seems hard to drive smoothly in traffic with it backing off each shift in the lower gears.
    There is a TSB for this..
    •A/T Controls - Hesitation/Lack of Performance

    Bulletin No.: 07-07-30-030

    Date: November 21, 2007

    6L80 Automatic Transmission - Hesitation, Lack of Performance, Difficult to Obtain Downshifts (Reprogram TCM)
    2007-2008 Cadillac Escalade, Escalade ESV, Escalade EXT
    2007-2008 GMC Sierra Denali, Yukon Denali, Yukon Denali XL

    with 6L80 Automatic Transmission (RPO MYC)


    Some customers may comment that the vehicle has a hesitation or lack of performance when attempting to accelerate with moderate throttle apply in the 56-113 km/h (35-70 mph) range. They may also comment that it is difficult to obtain transmission downshifts in the same 56-113 km/h (35-70 mph) range.


    A revised transmission calibration has been developed to address these issues. Reprogram the transmission control module (TCM) with updated calibration files using the TIS2WEB Service Programming System (SPS) application. As always, make sure your Tech 2(R) is updated with the latest software version.

    These calibrations will be "selectable" and should only be used to correct a customer concern as detailed above. Use of this calibration in a vehicle without these concerns may result in comments of busy shifting.

    Warranty Information

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