Ry363

Life keeps getting in the way of putting the stock wheels/tires on lol. Part of my problem just found out week ago they installed the rear lift blocks backwards. There tapered. I switched them around and low speed rumble got better especially when I would brake at 40. Still wobbles at 65ish pretty bad. Placed that installed my kit is going to try adding 1 degree pinion shim see what that does. Maybe a bad wheel or tire(s). Very annoying.

Do you have the tapered end (shorter end) facing to the front of the truck like ready lift says or the fat end to the front? I’m having similar issues when slowing as well and around 65. Have icon coils in front with the same 2.25 block in the rear. Driving me nuts.

I’ll have to check what it’s all torqued at this evening. Did your truck come with a factory shim under the leaf springs? Just looked at my dads 2019 with the same icon kit (only added 1” rear block) but his has the factory shim.

So my 21 rst 6.2 drove good stock (except for the bouncy Rancho shocks) Just installed Icon stage 2 kit, icon 17” wheels with Mickey Thompson exp 295/70 tires. Front is set just under 3” taller over stock, don't think the cv angles look bad. After driving it especially around 65 or so, you can feel it in the seat and floor of the truck kind of shaking. Next day installed readylift 2.25” rear lift block. Truck was re aligned. Tires we’re road forced balanced and shuddering / shaking is still there. Maybe even worse than before rear lift block. Can feel it at low speeds decelerating and really around 65. Truck has 2500 miles on it now. Read other threads maybe pinion angle? Torque converter? Did not have factory leaf spring shims. When I have time going to swap back to factory wheels / tires to eliminate the chance of a bad new wheel or tire. had a very similar set up on my 2018 same size wheel / tire combo with no issues. Anyone else have similar issue after level?? T1 trucks more sensitive to driveline angles??

For sure, don’t see too many with the bronze wheels. No just travel trailer for now.

Thanks. Fox 2.5 coils and cognito uca. Tires are 295/70/17 Toyo MT on method wheels.

Good looking Chevy! What side steps are those?