I have a 07 Chevy trailblazer Lt and my on Star and xm Sirius doesn't work also the lights on my steering wheel stop working. There is a red light that blinks when I turn the on Star on my rear view mirror. What could be causing that? When I turn on the xm Sirius it just says no signal. Already went to the dealership and they said it was the antenna and would be around 200.00 to fix it but I don't have that kind of money. Not forsure if that's even it because my radio works.Can someone please help???