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03-28-2012, 10:09 PM #1
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
03-29-2012, 12:33 AM #2
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 http://www.gmtruckclub.com/forum/sho...5-GMC-Yukon-XL
2002 Silverado ext cab 2wd (Sold)
2003 Yukon XL (Totaled)
03-29-2012, 01:08 AM #3
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
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