on a 99, does anyone know if it is possible to change the interval from 7500 miles down to about 3000? that's the time I try to change my oil. I don't see this in my manual. Someone in the C5 forum suggested trying a search here.
Thanks for your help.

05-08 and 40-48 and tell us what the Stored Values are in each of them.

-Uwe-