NHTSA Campaign Id 87V112000; Date: Jul. 20, 1987
The fracture or fragmention of the interlock shuttlevalve piston could result in partial or complete loss of rear braking. Areduction in braking ability could result in a vehicle crash without priorwarning.
1986 GMC T8H; 1987 GMC TC4
Component: Service Brakes, Air:controls
Manufactured by: General Motors Corp.
Affected Units:: 166
The brake interlock shuttle valve assembly could under a heavy service brake application fracture or fragment the internal shuttle piston.
New improved brake interlock shuttle assembly will be installed.
System: brakes/interlock shuttle valve assembly. Vehicle description: diesel transit buses.
Date Owners notified by Manufacturer: Jul 10, 1987
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