Hey All,
Been lurking here for a few months and got some good tips on mods and troubleshooting for my 2016 Silverado and just wanted to post here as a heads up to the 2015 - 2018 Silverado and Sierra owners.
Hadn't seen anyone posting here or heard anything official from OnStar or GM about this issue but I recently had my 2016 Silverado 1500 LTZ Z71 stolen and there appears to be a flaw in the GM or OnStar security for this year range of truck. From the security cameras at my work it looks like the thieves were able to get into the truck somehow, pop the hood, do something in the engine bay and drive off with it in under 5 min from arrival. Talking to the cops they said the newer Silverados are getting hit hard and popular for theft. Found some articles after the fact and it is apparently happening a lot in north Texas, one of the guys in the article link below had his Silverado stolen with the thieves using this same method of attack they did on mine and they disabled his active OnStar on board. My Silverado didn't have an active OnStar subscription but it did have it installed.
Truck was definitely locked with windows up and I still have both sets of keys, no broken glass and the alarm system never went off in a populated office parking lot.
Articles:
https://www.nbcdfw.com/news/local/thieves-target-chevrolet-silverados-disable-onstar-tracking/2309420/
https://www.nbcdfw.com/news/local/gone-in-3-minutes-police-release-video-of-truck-theft/2312818/
Be safe out there.