1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

2017 Yukon vs 2017 Tahoe

Discussion in 'General Discussion' started by dsh1106, Mar 13, 2020.

  1. dsh1106

    dsh1106 Member

    Posts:
    30
    Likes Received:
    11
    Joined:
    Feb 16, 2020
    Location:
    39.7594° N, 84.1917° W
    Name:
    Scott
    Both vehicles are stock.
     
  2. dsh1106

    dsh1106 Member

    Posts:
    30
    Likes Received:
    11
    Joined:
    Feb 16, 2020
    Location:
    39.7594° N, 84.1917° W
    Name:
    Scott
    Yes - Both are six speed transmissions.
     
  3. dsh1106

    dsh1106 Member

    Posts:
    30
    Likes Received:
    11
    Joined:
    Feb 16, 2020
    Location:
    39.7594° N, 84.1917° W
    Name:
    Scott
    Cleaned the MAF sensor and looked at the throttle body and it was "clean" a small amount of discoloration, but nothing grungy.

    Didn't seem to help.
     
  4. BlaineBug

    BlaineBug Full Access Member

    Posts:
    219
    Likes Received:
    82
    Joined:
    Dec 29, 2019
    Location:
    Indiana
    Name:
    Blaine
    I think the only way to know for sure would be if I drove it and it's unlikely that is going to happen based on our locations.
     
  5. WillCO

    WillCO Full Access Member

    Age:
    49
    Posts:
    410
    Likes Received:
    265
    Joined:
    Sep 10, 2016
    Location:
    Castle Rock, Colorado
    Name:
    Will
    Throttle programming can have a large perceived effect on performance. Even though the underlying power may be the same, if one truck's throttle is mapped differently than another's a given amount of pedal movement will create more output.

    There could be some tolerance differences between any two parts orders on throttles, especially if they come from different suppliers, which is probably unknowable. That's my guess, along with something having happened to the Tahoe along the way that affected its juice. Maybe fuel quality.

    It's much less likely IMO/IME that trucks are coming off the same assembly line using the same parts delivering varying levels of engine power. The manufacturing tolerances are simply too tight to allow that.
     
  6. sealandsky

    sealandsky Full Access Member

    Posts:
    416
    Likes Received:
    194
    Joined:
    Jun 28, 2019
    Location:
    Minneapolis, MN
    Name:
    Rich
    It's going to cost you some $$, but it may prove enlightening if you took both to a shop with a dyno and compared the dyno results against each other. You may see that the ECM's are tuned differently (and maybe be able to improve both with some tweaking).
     
  7. Bob2C

    Bob2C Full Access Member

    Posts:
    414
    Likes Received:
    330
    Joined:
    Jun 11, 2019
    Location:
    Northern VA
    Name:
    Robert
    Mine has the max tow package with 3.42 gears and it felt sluggish as well. Got it tuned. Wow what difference.


    Sent from my iPhone using Tapatalk
     
  8. WillCO

    WillCO Full Access Member

    Age:
    49
    Posts:
    410
    Likes Received:
    265
    Joined:
    Sep 10, 2016
    Location:
    Castle Rock, Colorado
    Name:
    Will
    Agree, but I wonder if ECM differences would show up on a dyno. Unless I'm reading it wrong, max power output would be the same, just a different amount of throttle engagement to get there.
     
  9. dsh1106

    dsh1106 Member

    Posts:
    30
    Likes Received:
    11
    Joined:
    Feb 16, 2020
    Location:
    39.7594° N, 84.1917° W
    Name:
    Scott
    Well I took the Tahoe to the dealer and head them run a diagnostics test for throttle response,shifting, fuelling, and AFM, to my surprise, everything is operating properly, imagine that.

    I just ordered the intune3, I guess we will see what sort of crap I can get into .....

    Scott
     
  10. Bob2C

    Bob2C Full Access Member

    Posts:
    414
    Likes Received:
    330
    Joined:
    Jun 11, 2019
    Location:
    Northern VA
    Name:
    Robert
    Are you going for a custom tune?


    Sent from my iPhone using Tapatalk
     

Share This Page