I bought a new 2018 GMC 1500 with the 6.2 v-8, and the noise reducing system. It also has the Bose system with sub-woofer. The radio has never sound right. Finally I just found out the noise reducing system was stopping the bass from the back seat speakers and the sub-woofer as well. And there is no fix! Optional items at optional prices just for things that do not work. I was given a truck to drive that did not have the noise system and the radio sounded great compared to mine, which should have been the opposite. The other truck was over $10,000 less than mine and everything on it worked! What am I suppose to do now? This system is also having an effect on my earing aides. Until now I thought they were going bad, but I realize it is the noise system that is doing it. I have only 4,000 miles on the truck so it is too soon to trade. What can be done?
