Service Stability on 2005 GMC Yukon Denali

Last night the instrument cluster in my 2005 GMC Yukon Denali very quickly flashed "Service Stability" and then the message went away. Kinda freaked me out a bit as I was driving 70mph down the highway. What does that mean?

1 answer
When you start your truck listen for a compressor noise .
If not take it to a survice center