Newest first. Many cover only part of a model year, so check your VIN with NHTSA or GMC before booking a repair.
NHTSA · listed for this model year
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
Canadian records (Transport Canada) · 1
These are Transport Canada campaigns for 1977 GMC N9500 vehicles sold in Canada. A Canadian campaign may have no US counterpart, or one under a different number covering different vehicles. For a vehicle sold in the United States, go by the NHTSA listing above and NHTSA's VIN lookup.
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
1977 GMC N9500 recall questions
NHTSA lists 1 recall for the 1977 GMC N9500 model year. That counts campaigns naming this model year, not recalls on your vehicle: many cover only a VIN range or production window. Transport Canada lists 1 Canadian campaign for the Canadian-market model, shown separately.
Enter your VIN in NHTSA's recall lookup or GMC's own, or call a GMC dealer with your VIN. Cardog uses your VIN only to find the model year; the recalls shown here are listed for that model year and are not matched to your VIN.
Not necessarily. Transport Canada campaigns cover vehicles sold in Canada. For a vehicle sold in the United States, go by the NHTSA listing and NHTSA's VIN lookup.
Safety recall repairs are normally done at no charge by an authorized GMC dealer. The manufacturer's notice for each campaign sets out the remedy and any conditions, so confirm with the dealer when you book.
Once GMC's lookup or a dealer confirms a recall applies, book the repair with an authorized GMC dealer and bring your VIN. If the manufacturer's notice says not to drive the vehicle or to park it outside, follow that instruction. Parts can take time, so book early.
Follow the manufacturer's notice for that recall. Most allow normal driving until the repair; some tell owners to stop driving or to park outside until it is fixed. Cardog does not grade recalls by severity: the manufacturer's notice and your dealer are the source.
Manufacturers must notify owners they have on record. If you bought the vehicle used or have moved, update your details with GMC so notices reach you, and check NHTSA's lookup from time to time.
Related recall checks
Recall listings for the latest model year vehicles.