SERVICE BRAKES, AIR:SUPPLY:LOW PRESSURE WARNING:SWITCH
THE AIR BRAKE SYSTEM WAS MANUFACTURED HAVING AIR BRAKE PRESSURE RELEASE TIMES OF APPROXIMATELY 1.5 SECONDS. THIS DOES NOT COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 121, "AIR BRAKE SYSTEMS."
Remedy: DEALERS WILL INSTALL A QUICK RELEASE VALVE IN THE AIR PRESSURE RELEASE SYSTEMS.
500 vehicles affected