Warning Light On problems of the 2012 GMC Yukon

While working on an airbag warning light I encountered 2 distinct problems with my airbag and vehicle system. 1. The main underhood fuse panel on my vehicle has portion of oxidation on the fuses themselves. This oxidation is causing fuses to appear intact but are causing the circuit to open. This was the root cause of my airbag system to not be operating properly. 2. While diagnosing the airbag system, I was cautious about unpluggin the battery during any troubleshooting that I was performing. But, at the end of the diagnosis period and all modules/system were reconnected to electrical mating connectors I reconnected the battery and started the vehicle to cool the interior. The central airbag module which is located in center console was already electrically connected but not mounted. When the module was moved into position and the mounting points of the module touched chassis ground of the vehicle the side curtain airbags and front seat belt squibs deployed. It apperas to me that the ground of the module and the vehicle common wire are not internally connected. This apparently may cause a floating circuit in the airbag module that when chassis ground (exterior mounting surface of the module) has a potential change, the airbags may go off inadvertently. The concern here is that corrosion on older vehicles may cause this chassis ground to be compromised and cause random airbag deployments to occur. Vehicle was stationary. Bodily injury could have occurred if occupant was positioned differently.

The contact owns a 2012 GMC Yukon denali. The contact stated that while operating the vehicle, the air bag warning light illuminated. The vehicle was taken to the dealer where it was diagnosed that the air bag control module needed to be replaced. The module was replaced and reprogrammed and the failure was remedied. The manufacturer was notified of the failure. The failure mileage was 86,000.

Takata recall -I found no record of recall but passenger airbag warning light is on as well as cracks on the dashboard around where the airbags would deploy. Heated seats malfunction and turn on and are unable to be turned off. Fuel tank mileage to empty unreliable. Guage can be at quarter tank and say 50 miles to empty and stall due to being out of gas. Gas guage issue changes while driving. . . On raod trips the gas guage will suddenly change and say there is more gas in it than there actually is.