VT_Z71

No problem at all with this exact setup. Stock snowflakes look great wrapped in 35" rubber and function flawlessly both on & off-road with the 6" BDS 2.5 DSC coilover kit using factory UCAs...

This is the only thing visible on mine (systems status via backlit led)....control box is hidden up under the dash.

You most certainly can use OEM wheels with the BDS 6" kit. If you have the Denali 20s then they are the same width as my 20" snowflakes, and I'm 99% sure the GM 22s are as well so you shouldnt have fitment issues unless there is something specific to the BDS Denali / Magnaride kit that I'm not aware of. I do have 1.5" BORA spacers on the rear not out of necessity but simply to even out the front/rear track width after lifting. No issues whatsoever with the Stabilitrak or other vehicle systems.

6" BDS lift with Fox DSC coilovers and 2.0 Rear shocks, BDS add-a-leaf. 35x12.5 Toyo MT rubber on factory 20x10 snowflakes. 1.5" Bora spacers in rear to even out with the front stance. No rubbing whatsoever and rides better than stock even before the Fox DSC Low Speed / High Speed adjustments are made!

Check your battery for corrosion. If it all looks good, get it tested. The least little change in electrical current from the battery causes the GMT-900 electrical sytem to go all kind of haywire. After fixing all of that, getting a new Optima Yellow Top and still having issues similar to what you described, I went to the dealer thinking I had a bad ground somewhere. Turns out, I had a crimped positive battery cable that was causing all of the problems. Replaced the cable under warranty and nothing more to report. By the way, I believe there is a GM TSB out for this issue on certain model years of the GMT-900.

I've been dealing with similar electrical issues with my '07 lately. 3 trips to the dealer later and I think we've finally figured it out. What I thought was an issue with the crimped negative cable connection at the battery was actually a 'strained / stretched positive cable'. Dealer 're-routed' my positive cable and 3 days later, so far so good. Hope thats the end of it.

Lots of boats on my old '02