Adding a Suspension Lift on a 2023 Sierra Denali Ultimate with Super Cruise

Bjeremi · December 7, 2023

Done multiple different levels on the front to try and get to no rubbing with the bigger tires and spacers. 1.5" 2" and now 2.5".

Super Cruise works fine still and commute weekly from OKC to DFW and use it the whole time. I think my mind has tricked me into thing that it wonders a little more but I really think that just depends on lane markers and light levels. Sometimes the sun washes out the lane markers and I feel that makes it harder for supercuirse to find them.

Edited December 12, 2023 by Bjeremi

Evans075 · December 8, 2023

On 6/21/2023 at 1:56 PM, jdlefty3 said:

3.5" rough country lift with 285-65r20 no problem with super cruise or anything else.

Hard to tell from your photo, did you do any trimming to fit those 285-65r20 tires?

KinkyDuramax · December 12, 2023

The only question I have is - If you have the pre-collison breaking but not the super-cruise stuff (Elevation trim) can you still level/lift without causing problems with the pre-collison stuff? Or are you able to get that recalibrated?

atxracer · January 21

On 11/29/2023 at 5:48 PM, BeardedBeast15 said:

What brand lift did you go with?

Dealer had a Rough County and put 35/12.50’s on 22’s. Definitely had to trim a lot.

atxracer · January 21

On 12/12/2023 at 8:23 AM, ARedSierra said:

The only question I have is - If you have the pre-collison breaking but not the super-cruise stuff (Elevation trim) can you still level/lift without causing problems with the pre-collison stuff? Or are you able to get that recalibrated?

That annoying pre collision junk still works too.

Mayo Woodward · January 22

just want to confirm the rough country 3.5 kit for the Denali with super cruise works and super cruise still works when the kit is added?

Edited January 22 by Mayo Woodward

atxracer · January 26

I think you answer is already here. But, it’s pretty safe to say that if supercruise still works on a 6” Rough Country lift, it will work on a 3.5” Rough Country lift.

Paul731 · April 23

On 12/6/2023 at 1:45 PM, jdlefty3 said:

No issues so far got 9000 miles on it now. I used the rough country 3.5 kit for the denali.

I merely changed the set of tires from 275 55 R22 to 275 60 R20 (due to driving on rough roads) and the tire shop said that will be 2.something % smaller diameter (a closer one would be a 65 wall = 0.7%) anyways; the super cruise does work sometimes but not as much as it is with stock size tires

I also asked GMC if I can lift it, I got the same answer as the GM rep answer above

it comes down to this I guess; is your SC picking up on the same roads before and after the lift? Or it is picking up on some roads?