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  1. #1

    Default 2011" Yukon XL 2500 Rough Idle/Power Issue.

    I have a 2500 xl that idles rough......wants to up shift on hills then lug out . Seems to over rev when coasting downhill. I know it has a clutch to clutch tran and can deal with those pulses... But the power loss seems just not right. Any direction? Dealer tech shows no errors, shows a bull. On the idle ...just deal with it kind of thing. HELP.

  2. #2


    I can't help with your issue but wanted to welcome you to GMTC!

  3. #3


    Welcome to the club, it's good to have you aboard. Good luck figuring out the problem. Sounds like you should find a better dealer maybe.

    2002 Chevrolet Silverado Extended Cab SportSide: See Mods in My Garage

  4. #4


    I would check the egr valve. It may be clogged or sticking

    1995 Silverado 4x4
    6" BDS Suspension Lift-3" Body Lift-Add A Leaf in rear -Trailmaster SSV Shocks-Duel Steering Stabilizer Kit -AirAid Cold air intake-
    4.56 Gears with Detroit Auburn Locker-Pro-Comp Traction Bars with duel shocks-Aluminum Skid Plate Kit-38.5" x 16.5" Mickey Thompson Baja Claws-Constant Dropping fuel gauge

    2005 Yukon XL Jet Power Programmer, Bilstein Shocks, Bilstein rear springs, Helwig Anti-sway bars, EGR Window Visors, EGR Hood Shield, Denali Headlights, Headlight harness upgrade, GE NightHawk Bulbs, White Night Rear lighting system, Russell Braided SS brake lines, PowerStop Brake pads, PowerStop cross drilled and Slotted Rotors,
    2002 Silverado ext cab 2wd (Sold)
    2003 Yukon XL (Totaled)

  5. #5


    Welcome to GMTC, hope somebody can help you with your problem.
    1994 GMC Yukon, 2 door, Victory Red
    Garage Link:

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