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GMC2015

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  • Location
    Florida
  • Gender
    Male
  • Drives
    2015 GMC Sierra SLE 4.3L

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  1. GMC2015
    For your case, the best thing to do for performance would be to regear to 4.10s and get a custom tune. Together, they’ll make the truck alot more driveable and responsive. Ditto on the e85, it added a nice bump in performance on my old 2015 4.3.
  2. GMC2015
    An uncle of mine who owns basically the same truck as you, with it being a 2016, said the same thing about the sluggishness. Last week, he had it custom tuned on a dyno for 93 octane and man it moves now. The tune will completely transform your truck no doubt.
  3. GMC2015
    I was at a dealer yesterday and noticed this gas pedal flex is still on the 2017s. GM should've done something by now.
  4. GMC2015
    Thanks! Yea the stock wheels looked nice but I've since traded them for 20 inch Denali rims, which I'm probably gonna change again anyways. If this truck had the 5 speed that they still put in the trucks in Mexico then I would never sell or trade.
  5. GMC2015
    Should've added a picture of mine.
  6. GMC2015
    I'm just gonna add this: If anyone that drives a 4.3 with AFM and has the dreaded vibration/shake in V4 mode, either clamp or delete the exhaust valve. Doing this made the truck SO much smoother with the v4-v6-v4 transitions, and the shake is 95% gone. I haven't even noticed any drone with the valve open.
  7. GMC2015
    Yea I know what you mean. I'm guessing the dealer added it to both our trucks before purchased. If it's just a simple stripe down the side it doesn't look bad, to me at least.
  8. GMC2015
    Just curious if anyone has a pinstripe on their truck? With the exception of my truck and my dad's 2016 2500 duramax I've never seen another k2xx with a pinstripe.
  9. GMC2015
    The fuel pump priming when you open the door is a new feature on the 2017s, probably to shorten the start times on the DI engines. As for the surging, I've seen some posts on people having to replace the torque converters on brand new 2017s because of that.
  10. GMC2015
    I read on another forum that the shudder could be fixed by clamping open the flapper valve in the exhaust. My 4.3 has a slight but noticeable shudder in v4-v6, so I'll do it when I have time.
  11. GMC2015
    Just out of curiousity, which dealer do you plan on going to? I'm in Tampa as well.
  12. GMC2015
    Idk why but man does that gauge cluster look good in blue.
  13. GMC2015
    I know this is a long shot but does anybody know a competent shop in the Tampa Bay area? I need to look into this.
  14. GMC2015
    **** yea! Time to peg that speedometer till it breaks
  15. GMC2015
    Does it shake at 141 mph?
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