1971 GMC CM5500 Recalls (2)

Campaign:: 71V037000 on 10/11/1979
Component:: Service brakes, hydraulic:power assist:vacuum:hoses, lines/piping, and fittings
Affected:: 9,600
Notes:: Chevrolet bulletin no 71-c-7.gmc bulletin no 71-c-4 and 71-c -4a.trucks andschool busses with bendix vacuum hydraulic br akes, trucks with vacuum boostedbrakes.possibility that sin gle bendix vacuum hydraulic brake system may haveend cap hexhead fitting assembly which does not make proper contact withendofbooster slave cylinder.this could cause brake fluid toleak from end ofbooster slave cylinder.loss of brake fluidwould result in low brake pedaland cause complete loss of br aking action.(correct by replacing with newimproved nut.)
Campaign:: 71V085000 on 10/11/1979
Component:: Vehicle speed control
Affected:: 11,550
Notes:: Gmc campaign no 71-c-6.medium duty trucks and school buses w ith 305c or 351cv-6 gasoline engine.carburetor throttle sha ft may be excessively worn andcould break.this would allowthrottle valves to remain in open positionrendering accelerat or ineffective and making vehicle difficult to stop.(correctby installing new throttle body assembly.)