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  1. #1

    Question Truck Norris (08 1/2 ton 5.3 w/4l60 &g80) Vibration in 2nd gear.

    Alright, as the title says I've got a strange vibration when under a load (aka normal driving... aka 3/4 throttle or more lol) but ONLY when reaching the 4000 rpm mark and then it continues until the shift into 3rd and disappears.

    This started happening as soon as I dropped the truck basically and obviously it is bothering the heck out of me..

    I am kind of stumped as to what could be causing it, because (correct me if I'm wrong) a u-joint, off-balance driveshaft, or anything of that sort should be consistent throughout the entire gear span shouldn't it?

    Just curious if anyone has had this same issue or not before? I couldn't find anything already in the forum.

    "If you're not living life on the edge, You're taking up too much space"

    "Truck Norris"
    - 2008 TX Edition Silverado
    - McGaughy's 4/5 Drop Kit
    - Apline Type R 10s & Amp
    - Pioneer 6 Disc Touchscreen Deck
    - Nightmare Breed Motorsports custom tune
    - Custom 3" dual exhaust through x-pipe dumped at axle
    - Airaid CAI
    - Badges and molding removed, roll pan, Truxedo roll-up cover (compliments of GMTC!), 3pc billet grille, factory fogs upgrade
    "Kristine" - 1991 Nissan 240sx
    - Cut to pieces, LS build pending

  2. #2

    Default

    Does that truck have a mid-shaft bearing? I have seen those things cause all sorts of crazy vibration issues. I had a cracked u joint strap in the rear but it only vibrated between 35 and 38 mph, When it got worse it vibrated all the time.

    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, http://www.gmtruckclub.com/forum/sho...5-GMC-Yukon-XL
    2002 Silverado ext cab 2wd (Sold)
    2003 Yukon XL (Totaled)

  3. #3

    Default

    Makes sense.. i haven't yet gotten underneath him to check and see if anything was loose, as i am only actually in possession of him 5-10 days a month lol. but that's something ill have to check! thanks bud

    "If you're not living life on the edge, You're taking up too much space"

    "Truck Norris"
    - 2008 TX Edition Silverado
    - McGaughy's 4/5 Drop Kit
    - Apline Type R 10s & Amp
    - Pioneer 6 Disc Touchscreen Deck
    - Nightmare Breed Motorsports custom tune
    - Custom 3" dual exhaust through x-pipe dumped at axle
    - Airaid CAI
    - Badges and molding removed, roll pan, Truxedo roll-up cover (compliments of GMTC!), 3pc billet grille, factory fogs upgrade
    "Kristine" - 1991 Nissan 240sx
    - Cut to pieces, LS build pending

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