I have a 2007 SS with 48,000. I have taken great care of the vehicle from day one. Last month the air suspension has stopped leveling. The air compressor would come on and the air bags would not inflate. I had to bring it to Chevy since it was completely bottomed out. They said it was the leveling arms and replaced them. Very expensive repair. A week later it was leveling uneven and has completely stopped working again. Chevy now thinks it is the switch but states that the part is discontinued and can't be located. I have read several informative posts but haven't found one where the switch was replaced.....if that is really the problem. Anyone know where I can get the part or any other suggestion? Any assistance would be greatly appreciated.