Air Bag On-off Switch problems of the 2006 GMC Sierra 1500

I have had to replace the tail light lenses several times because the tab that secures the lenses to the vehicle breaks and the result is lights just hanging on the truck by the electrical cords. I have the same problem involving my other vehicles in the past made by GMC namely a second family GMC sierra that was made in the year 2004, and a Chevrolet silverado. The electrical lighting on the dashboard has been malfunctioning for a long time. I noticed the malfunction during the first year I bought the truck. I have had to replace electrical switch in the air conditioning/heating the mechanic told me that the wiring is heating up and causing the short to the switch. The new switch has shorted out just like he said it would. I have a notification that my airbag needs servicing. There has been no accident involved to cause this issue. I bought this vehicle new and have been the primary driver since 2006 when I bought the vehicle.

The service airbag light came on and off. Took it to dealer to have tested. Trouble code p0084, driver seat position sensor. Diagnostic showed fault is in airbag sensing and diagnostic module, showed false high resistance reading. Sensor kit and module needed replaced, almost $600 just for parts. Took 2 times at the dealer to get this fixed as first replacement parts did not work. No coverage by GMC for failure of switch for airbag. Truck never in any type accident so airbag was never used. Surprised that there was no assistance from GMC concerning this safety issue as working airbags are required.

The truck was purchased with 113,000 miles on it and no apparent problems when bought. After about 3 months of ownership, the "service airbag" message appeared intermittently for the next few weeks. After that time, the message was constant on. Took the truck to my local dealer who charged to "repair" it. Message came back after about a week of driving. Message now reappears at random intervals. Don't know if the problem is with the airbag sensors, the control unit, or any peripheral switches. Dealer is incompetent and do not trust to fix the problem. Already paid good money to have this problem repaired and am not going to continue to pay for incompetence. Message appears when vehicle is in motion and when vehicle is started at random. Message will sometimes disappear for weeks at a time, then, reappear at random.