Michel GMC

I've been having a service 4WD message appearing on my 2014 Silverado. Since they have made that software update for the transfer case, it is the second time the message has came on. Now not only that I need to bring the truck in for the sixth time, every time I bring it in my wife has to take time off her work (can't drive as I had neck surgery). Now to top things up, the other day a "Faulty engine power" message showed up and all this with less then 10,000 KM on the vehicle. According to my dealer, apparently this message is due to a faulty throttle body oxygen sensor.