Antilock: interconnecting assembly(wiring)Recall 77V-145 · Chevrolet and GMC vehicles
GENERAL MOTORS CORP. recall 77V-145 covers 185 Chevrolet and GMC vehicles for a antilock: interconnecting assembly(wiring) problem, reported to NHTSA on September 15, 1977.
Source: NHTSA recall 77V145000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
THE INVOLVED VEHICLES MAY NOT COMPLY WITH FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS". THE TRAILER BRAKE CONTROL AIR LINE WAS CONNECTED TO THE FRONT BRAKE DOUBLE CHECK VALVE RATHER THAN THE STOP LAMP SWITCH DOUBLE CHECK VALVE, SUCH THAT IN THE EVENT OF A FAILURE OF THE TRUCK FRONT BRAKE SYSTEM THE TRAILER BRAKES CANNOT BE APPLIED USING THE SERVICE BRAKE CONTROL (TREADLE VALVE).
The fix
DEALER WILL INSPECT AND CONNECT THE BRAKE CONTROL AIR LINE TO THE PROPER VALVE, WITHOUT CHARGE TO OWNER.
VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH AIR BRAKE MODELS W/RQ3 AND W/J91.SYSTEM: SERVICE BRAKES; TRAILER BRAKE CONTROLS.CONSEQUENCES OF DEFECT: LOSS OF TREADLE VALVE CONTROL OVER THE TRAILER BRAKESWOULD INCREASE VEHICLE STOPPING DISTANCE AND COULD RESULT IN AN ACCIDENT.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.