i had this same message happen to me last week and i have no idea what it is either. i put it in reverse and it took me out of gear and popped up that message. anyone know?? its that first time its happened.
2003 Chevrolet CC/SB LB7
Homemade 5 inch "shorty" stack, Kennedy boost valve, Autometer Phantom II Boost and Pyro gauges, 35's on all black Ultra Goliaths, front end leveled, 2% tint, SD tierod sleeves, 2 Kicker CVT 10's w/ Sony amp, 10,000k HID headlights, blacked out taillights and brake light, spray on bedliner on front end