Ok so on my 06 Yukon XL Denali my rear airshocks have blown out and compressor is toast, however I don't have any messages. Oh well, so as I have been doing research on this fix or conversion and pricing everything out I have found that there isn't much of a price difference by the time I buy new shocks and springs and resistors to convert it. I can get a new Arnott Rear Air Ride Suspension Strut & Compressor Kit for $365 or replace with Bilstein shocks and springs for $320. Since the price is so close I would like your opinion or pros and cons of each system.