I took my Z71 to the dealership to get the 4wd looked at for sticking in 4wd low. When I picked up my truck, there was an additional problem. The airbag system had a fault code. I took it back to the dealership and they wanted $90 to look at it. After complaining to management, they waived the $90 because it occurred while in their shop. They said it was the driver side sensor and it would cost $160 to fix. I took it back and stopped by Advance Auto Parts to pick-up a sensor to fix it myself. They said it was a dealership scam and I should look on the internet for an easy fix... well, here I am.