Campaigns on record across the GMC N9f064 (1979), 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.
THE INVOLVED VEHICLES FAIL TO MEET FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS", IN REGARD TO INCORRECT PLUMBING IN THE LOW AIR PRESSURE WARNING SYSTEM. AS A RESULT, A LOW AIR PRESSURE CONDITION IN THE REAR BRAKE AIR SUPPLY WILL NOT ACTUATE THE WARNING SYSTEM. THE AUDIBLE ALARM WOULD NOT FUNCTION AND THE DRIVER WOULD NOT BE WARNED OF A BRAKE MALFUNCTION.
THE LOW AIR PRESSURE WARNING SYSTEM WILL BE INSPECTED AND CORRECTED, IF NECESSARY, WITHOUT CHARGE.
79V094000 · 22 units in campaign · NHTSA
Applies only if the manufacturer confirms your VIN · repair by an authorised dealer · All 1979 gmc n9f064 recalls
GMC N9f064 by year
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