Just this morning for the 1st time I see this "service ride control" light. I checked in to my local GMC dealer for an oil change and an update to Onstar. Oil change $35...Onstar update $15...diagnostic for ride control $50 for $100 just to find out what the light indicates. Anybody had this issue with their ride control? The service writer said it could be several things.

 

and he's right, you won't be able to do much without alteast having the codes for a starting point