wcass621

Talked with dealership, tire shop and the dealership in Iowa that an earlier post said had lifted dozens of '15 Denali's. They all said no dice with this suspension. My dealership also said I would be playing with fire on the warranty. In the end, I just decided to put the largest tires on with the factory rake. Put on 20" XD rims with +19 offset and Toyo Open Country II A/T 305/50/20. Also blacked out the chrome door trim, mirrors and swapped out chrome grill for an All Terrian version. Not exactly how I wanted it but turned out pretty good.

Does anyone know the part name/numbers for items 33-35 in first diagram. I have a 2015 Sierra Denali and am replacing the chrome with the matching black parts from the Elevation Edition but cannot find the corresponding part number for the chrome part on the lower from bumper. Not sure if they call it a skid plate or something else. Any help would be appreciated.

Huge help, thanks a lot. Have a call into my dealer to see if this can be done. Makes the difference between being maxing out at a 305/50/20 and getting to put on the 295/55R20's that I want.

Have you tried towing anything since the kit was put on? I have heard that is another issue folks are having after the leveling kit is put on the 2015 models. I just picked up my 6.2L two days ago and one of the reasons it was purchased was for towing a trailer and boat. I had wanted to put on a 2.5" kit, a set of XD 20x9 +18 with 295/55R20's but have been told that can't be done with this suspension. Instead, it looks like I may be stuck with the XDs and a 305/50/20 set. I have a call into my local dealer's service manager to see if this can be done as I don't want to spend the $ on the smaller set and be stuck only to find out someone in Tampa can do what you had done.

This is from an older post so hopefully you will still get this. I have a 2015 Serria Denali 1500 and wanted to have the same setup as you with the 2.5" leveling kit and 33" tires but was told by the shop that the Denali magnetic suspension system would not work right with the leveling kit. Called the dealership and they confirmed it would be a real bad idea. Specifically would mess up on towing anything as the back end would drop much lower than the front and the sensors would go also go haywire. Did you run into that problem at all?