Good Chassis service center
I was having problems with my air tank sensors and valve. The parking brake alarm was also going off at will. I have a HR made by Monaco. I took my coach to Scots RV and truck repair at 3301 American Rd. in Rockford. He did a great job. He also found that my shocks were completely shot. He and his staff worked hard dealing with our insurance (RT66) to get them to pay for their fair share of the repairs. Anyone in the Northern Illinois/Southern Wisconsin area needing coach repair,Scot's is a good place to keep in mind.
PS: I had a broken windshield nozzle that was impossible to find. Scot's had it and threw it in.