VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH AUTOMATIC TRANSMISSIONS AND AN OPTIONAL SHIFT SELECTOR WITH A PARK BRAKE POSITION. THESE VEHICLES DO NOT COMPLY WITH THE EMERGENCY BRAKE SYSTEM REQUIREMENTS OF FMVSS NO. 121, "AIR BRAKE SYSTEM." IF THE SECONDARY AIR SYSTEM IS DRAINED, THE SPRING BRAKES WILL APPLY AND THE ABILITY TO APPLY, RELEASE, AND MODULATE THE SERVICE BRAKES WILL BE LOST.
RiskINCREASED BRAKING EFFORT WILL BE REQUIRED, INCREASING THE RISK OF A CRASH.
FixDEALERS WILL REPAIR THE BRAKE SYSTEM ON THESE VEHICLES.