I bought the scanner about two years ago. When I first started using it, there was a problem with GM cars. It could not scan airbags &park assets & radio &tailgate With Chrysler vehicles it does not communicate with the transmission and the blind spot unit.modules And I thought all this time that the device was not capable, but a month ago I saw that my friend had a device like mine and was able to perform a test normally, so I was sure that there was a problem with my device. I contacted customer service, but they did not help me. Please help.my