weazleburger

Mine has always had a vibration, shakes console/seats around 40ish and 70ish

Boost-freak

tell us what you find , i think i read in another forum rear end change rotor to rotor is fixing it plus there's another person who changed to a new driveshaft which fix the problem for him .



agree , i bought my truck cash which is mistake but if i fix this vibration all is good ,
did you try leaf spring clamp ? a lot of people say it fix clunk and vibrate it's cheap next to what you plan to do .


did you align pinion angle within spec ? it's odd if it vibrate with flip kit , there's nothing holding me back from lowering it except vibration .


if your dealer is great they will try to help if not don't bother with them ( it operates within normal range )

wuznme

iTrader: (2)

I adjusted the DJM Kit 8-ways to Sunday, had multiple issues with the DJM flip kit, 3 times called to ask questions, we never heard that before was the standard answer and really Belltech is no different with their response to issues, then again the phone jockeys don't care about anything but their paycheck.

Waiting on shims to show up now and see if can get the angle correct with the Belltech kit.

If not put it back to shackles, block removed and enjoy it that way. Although it looks 100 times better lowered.

Feed

iTrader: (2)

All three of my rcsb trucks 99, 04, 12, had a shake, stock height and lowered. It varied by the road condition. My 15 CCSB shakes the least, usually only for the first mile down the road on my way to work but its good after I slow after down for one small section of 45mph road. Its good going the other other direction when I turn out of my driveway. Could just be harmonics issue with just one thing, axle, tire, wheel, driveshaft or combination of things, throwing the truck out of whack.

07Softail

agree , i bought my truck cash which is mistake but if i fix this vibration all is good ,
did you try leaf spring clamp ? a lot of people say it fix clunk and vibrate it's cheap next to what you plan to do .

I haven't clamped the springs

Wolftrk99

iTrader: (5)

Have seen a few trucks vibrate when it deactivates cylinders....

Boost-freak

i think the belltech flip kit need a new trans mount a read it somewhere , don't contact them they have the laziest costumer service , check with suspension source they have great service .


this model when shake happen its the worst thing ever not like older models .

engine mounts - body mount - tires - wheels - DS - rear end .. they have TSP check procedure to eliminate all of this parts .

i have an appointment with my dealer in 2 weeks lets see what will they say

1994Vmax

iTrader: (4)

I know my 05 always has and probably always will vibrate more than my 2015 does..... I have yet to feel a vibrating current bodystyle truck. My 15 does vibrate when it sits for a while until I drive it a bit but that's flat spots on the 22's..... otherwise it's smooth. One crew cab I test drove vibrated but again... probably tires. Not any of the trucks we test drove when my employee was buying his 14 vibrated and these were all these low mileage 2 year trade ins....

GMwhineforum ( which I am currently suspended off of lol) has a thread that is thousands of posts long with nothing but mostly whining and no resolution.

wuznme

iTrader: (2)

Have the transfer case spacer, it basically takes the tail shaft from -6.8° to -5.2° although the pinion is set at -.70° that's too big of a swing. Not sure why they don't build more angle into the axle brackets. Have some shims coming this week to try and work this out.

Thinking the shims will take care of the issue, my vibrations are mostly on decel and with almost a -6° swing in angle I can see why. Will probably try the 4° shims first.

Had heard the Belltech kit was reworked for 14+ trucks, but Im not so sure, the transfer case bolts they supplied with the spacers are way too small in diameter. The older trucks may have not had as much negative angle at the tail shaft, so possible using the same kit, just a different part number. Belltech hasn't been the same since 2004-2005 timeframe.

stroked 4.8L

I have read multiple posts about "I paid cash, what a mistake", for the record the service dept. does not know nor care if you own or are making payments. If its warranty its warranty if its customer pay its customer pay. There are several bulletins related to vibration concerns, there is a special tool available to dealers to help pin point vibration causes, we have seen high road force in tire/wheel sets, rear end gears, axle housings as well.