Campaigns on record across the GMC J9500 (1966–1978), from Transport Canada and, tagged NHTSA, the United States. Pick a model year for the Canadian listing, and check your VIN with GMC to confirm which apply.
MEDIUM AND HEAVY DUTY TRUCKS EQUIPPED WITH EATON ANTI-LOCK AIR BRAKE SYSTEM. THE PISTON IN THE ANTI-LOCK RELAY VALVES MAY EXPAND WHEN EXPOSED TO CERTAIN FLUID CONTAMINATES WHICH MAY BE FOUND IN THE AIR BRAKE SYSTEM. EXPANDED PISTONS CAN STICK OR JAM IN THE VALVES AND PREVENT AIR DELIVERY TO THE BVRAKE CHAMBERS CAUSING A LOSS OF BRAKING POWER ON THE AFFECTED AXLE. THIS CONDITION WOULD RESULT IN LONGER STOPPING DISTANCES.
1979131 · 254 units in campaign · Transport Canada
Applies only if the manufacturer confirms your VIN · repair by an authorized dealer · All 1978 gmc j9500 recalls
TRUCK AND SCHOOL BUS CHASSIS EQUIPPED WITH AIR BRAKES. SOME EATON ANTI-LOCK CONTROLLERS MAY MALFUNCTION PREVENTING APPLICATION OF THE BRAKES ON THE AXLE INVOLVED. THIS CONDITION COULD LEAD TO INCREASED STOPPING DISTANCES, POSSIBLY RESULTING IN A VEHICLE CRASH.
1978060 · 67 units in campaign · Transport Canada
Applies only if the manufacturer confirms your VIN · repair by an authorized dealer · All 1976 gmc j9500 recalls
THE FRONT AXLE ALUMINUM HUBS ON THE INVOLVED VEHICLES MAY CONTAIN A DEFICIENCY IN THE BARREL AREA BETWEEN THE INNER AND OUTER BEARINGS WHICH MAY RESULT IN CRACKS WHICH COULD EVENTUALLY LEAD TO HUB FAILURE.
DEALER WILL INSPECT AND REPLACE FRONT AXLE ALUMINUM HUBS WITH STEEL HUBS, WITHOUT CHARGE TO OWNER.
77V172000 · 685 units in campaign · NHTSA
Applies only if the manufacturer confirms your VIN · repair by an authorized dealer · All 1977 gmc j9500 recalls
74V231000 · 4,877 units in campaign · NHTSA
Applies only if the manufacturer confirms your VIN · repair by an authorized dealer · All 1974 gmc j9500 recalls
68V064000 · 22,683 units in campaign · NHTSA
Applies only if the manufacturer confirms your VIN · repair by an authorized dealer · All 1968 gmc j9500 recalls