3500s should have no are bags 8600lb gvwr 2500s should have no air bags I have no idea why 2500 suburbans have them.
Here's another data point: My '99 C2500 8-lugger with the HD 8600 GVWR was built with no airbags.
Simple is good. Even if I have to own my defensive driving duties a wee bit more while lumbering
around...instead of relying on the billowy kiss from a deploying airbag to keep me out of trouble. :0)