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  1. 2

    Do I wait for the 2027 MY to come out? Buy new now?

    I'm getting pretty close to pulling the trigger on a new Yukon XL, Elevation with a lot of goodies. This will be Yukon XL number 5 for me, and I've only ever had a 5.3 Yes, the 6.2 would be nice but frankly I just don't need a Denali, don't tow that heavy or often, and don't want to worry about...
  2. 2

    Random lifter noise/#1 rocker arm

    2017 Yukon XL--L83 Long story short, I did a delete back in April, probably around 10k miles on her now. BTR stage 1 cam with stock lifters, push rods. New bare heads that I assembled. CHP trunnion kits New OEM injectors UPR catch can Been running like a bunny since the day it was tuned. Fast...
  3. 2

    Mods for an L83/DOD delete

    Hi folks, been lurking about for some time now. Bought a 2017 XL back in April of last year, 144k miles with excellent past history, newer 6L80E with the cooler t-stat. Truck is mostly stock, with the addition of Corsa cat back exhaust and a Diablosport Trinity 2 EX with a custom tune by Lew. I...

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