i have 2018 Chevy Silverado 2500hd, reason being that i love taking my RZR-1000 out to Glamis for the weekend and holidays . If you ever been to Glamis during holiday weekends you know when it's time to air up and how long the air station line can be or just simply airing down and getting stuck in the sand can be. So i found a company by the name of KLEINN AIRHORNS they are base out of AZ. I found on their website a new product that was in the testing state which i was able to sign up for. I received the product in December 2018 AND IT TOOK ME ABOUT 2.5 Hours to install this bad boy. The instruction were easy to follow and clear. When it was complete it was breath taking loud. Yup i now was that guy on the street that everyone hates. The fact is i don't have to wait hours to air up while I'm off roading. This company sells a great product especially if your just looking for a train horn or simply need a onboard air system for your Air Bags for towing.