Vic15

I'm running Nitto Ridge Grapplers, 35x12.5 20 at generally 48 psi. I see no need to re-gear. Plenty of power. Decent gas mileage for driving pretty fast most of the time, you know, 420hp ?. 15-16 mpg combined, but mostly short around town driving. I see 18 on the highway if I can stay below 80 mph.?

It won't make sense, but after trying several different remedies I had the tranny flushed. I told the independent mechanic to do the BG's chemical treatment with the fresh fluid. Hasn't had the vibration / shake in over a year. Now I need to knock on wood! If a flush doesn't work you may need a torque converter...

Just started vibrating, very intermittently. Balance, rotated, new tie-rod ends, alignment, etc. 35,400 miles. never had a vibration. One day it started, like driving over a rumble strip, lasts just for a second to a few seconds. Speed & road surface doesn't seem to matter. I can drive 100 miles and it might not do it at all. it might do it within a mile or 2. There is no rhyme or reason sometimes it feels front end related & sometimes it feels like it's through the whole truck. Does this sound like the same vibration problem referred to in this thread to y"all? 2015 Sierra Black Widow, 6 inch Fabtech lift, 35 inch Nitto Ridge Grapplers...

Thanks! 2015 GMC Black Widow with a 6 inch Fabtech lift, 20X10 Black Widow wheels & 35X12.50/20 BFG's. It has the 6.2L, 8 speed with 3.23 rear gear. Purchased new just as it appears.

That's beefy looking Aaron1085!

Good looking truck JamesDub

https://www.dropbox.com/s/wiescu7m7pexdq5/2016-07-22%2012.50.26-1.jpg?dl=0 Pick this up today. Time to make some money.

Did you add a leaf to the rear? Your truck looks great!

Fabtech 6 inch with no issues.

Yeah, even with the remote start I still use the fob to roll down the windows in this Texas heat.

There was no remote controlled up option on the Range Rover, Mini Cooper,or Mazda we owned in the past. All could roll down with the remote.

I haven't felt the need to re-gear. There's plenty of power even with the 6.2, 3.23 & 8 speed. My brother is plenty happy with his as well, 5.3, 3.42 & 6 speed. We both have a 6 inch lift on 35s. Try it before you spend the money to re-gear.

Mine popped first left hand turn of the day, but not always. It doesn't do it since an alignment. The only other difference is it is much warmer outside now. I think the pop was a ball joint.