I seem to remember reading something about that on here when all three warnings popped up, but I can't find it....
I would just bring it in to the dealer.
-->2015.5 GMC Sierra LML 3500 Dually CC/LB 4x4 Denali
-->2011 Chevy Silverado LML 3500 Dually CC/LB 4x4 LTZ - B&W, Line-X, Retrax - SOLD
-->2008 Chevy Silverado LMM 3500 Dually CC/LB 4X4 LT - Edge Evo Race, MBRP Exhaust, HIDs - SOLD
-->2005 Pace 48' Race Trailer w/ Living Quarters
-->1967 Chevy II - Race car - 9.90 @ 135 mph