NHTSA Campaign Id 79V094000; Date: Apr. 13, 1979
1979 GMC N9F064
Component: Service Brakes, Air:supply:low Pressure Warning
Manufactured by: General Motors Corp.
Affected Units:: 22
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.
Vehicle description: trucks. System: service brakes; low air pressure warning devices. Consequences of defect: without the warning signal, reduced braking capabilitycould result in a vehicle accident and serious personal injuries.
Date Owners notified by Manufacturer: May 16, 1979
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