After washing my truck thoroughly 2 weeks ago, all these issues popped up on my 2017 silverado 1500 WT, 4X4 Crew cab. At first, it was intermittent and usually on a rough patch of highway. But the last week it was steady. I finally got to my service appointment 2 days ago. There were several communication errors between a bunch of sensors. My truck has 49000 miles, and was told none of it would be covered under warranty(complete and extended warranties were purchased). So i took it home and tried all these fixes,(I assume i still have a lot of wiring yet to check), but the issues are still there. Service stabiltrak, service trailer brake system, no cruise control, no TPMS, ABS light on, hit a bump and the power steering "grabs" for a split second. The only one of these fixes I didn't try yet was battery to ground cable replacement. Beginning tonight I will be tracing wires and ground points, so we shall see. I just wanted to share so maybe, someone watching these forums who may be taking note, realizes how far this problem goes. One of my coworkers had a couple sensor issues on his 2018 Chev 1500 LTZ he purchased in Nov/18 with only 3800 miles on it, but disappeared a couple days later and hasn't returned. It doesn't help that the 2 local GM dealerships in the area are not very helpful. ( whole slew of different stories on that topic lol)