2018 Sierra 1500 Upper Control Arms

schnid21 · May 30, 2022

Sorry if this has already been beat to death, but I did a bunch of searching and I could not find a straight answer for the 2018 trucks.

Truck is a 2018 SLE with a 2" RC level (just the spacer). Stock 20" rims with 275/60/R20 rubber.

I'm looking to get a set of upper control arms that will correct the ball joint angle. What options do I have for the 2018 (from what I can tell something changed on this year of truck that quite a few older versions won't work?).

Will all the aftermarket options hit at full steer with the stock rims and offset?

Thanks for any info that can point me in the right direction.

Thanks

Jason

reardiff · May 30, 2022

I went through the same thing when I did my level too. I found the link below to be most valuable. You can buy just the UCA or the kit with the spacers. There's plenty of other options out there, but found the Ready Lift UCA's to be a great aftermarket replacement at a reasonable price especially when adding a level.

Ready Lift - UCA Info.

schnid21 · May 30, 2022

Thanks for the info. I just watched this video. Albeit that is a year or 2 newer truck. And based off what he found it look like the rubber would rub the upper control arm with stock rims and slightly bigger tires.

reardiff · May 30, 2022

I have a 2017 with stock stamped steel UCA's, 1.5 inch level, and 275/60/20's on stock rims and no rubbing. I was going to get the Ready Lift UCA's at the time but decided to just wait and see how long I can get out of the stock control arm. So far 25,000 miles and no issues or rubbing. When it's time to replace them I'll most likely be going with the Ready Lift.

Edited May 30, 2022 by reardiff

3tspapat · June 2, 2022

I have 2018 4WD with readylift's 2.5" level with their UCA. Inside driver tire did rub very slightly with UCA at full turn with my 275/60/20 on stock wheels but not the passenger side. Not enough to really do anything other than make a streak on the tire and take off some paint on the UCA. Finally went with 0 offset wheels so no more rubbing.