The Sicilian

G4BAMA - did you ever figure this query out? I have an 06 Silverado Vortec MAX that has the identical problem, & has turned into a "Charging system failure" now & all the interior /gauge lights go black too & my truck stalls out. I charged the battery back up a bit with a portable jumper & left it connected to the battery terminals to get home, Now I'm wondering what I need to replace/fix. I was thinking of starting with the alternator, but I only have 55,000 miles, and thats like 1/3 the usual life. Like most of you I take good care of my truck. I just did an air- oil/filter Oil change & replaced a faulty blower control module https://www.amazon.com/gp/product/B078J3B4S8/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1 . Im wondering if the control module shorted out b/c of whatever is going on with this message thats been coming on & off for about a year. I was hoping the BCModule fix would make that message go away, it only seem to make it worse-ARG!