Auto Recalls for Consumers

1977 GMC C30 Recall - Campaign #77V119000

 
Auto Recalls For Consumers

1977 GMC C30 RECALL - #77V119000

RECALL FOR SERVICE BRAKES, HYDRAULIC : POWER ASSIST : VACUUM

ON THE INVOLVED VEHICLES, THE NUTS WHICH ATTACH THE BRAKE MASTER CYLINDER TO THE HYDRO-BOOST UNIT MAY HAVE BEEN OVER-TIGHTENED. THIS COULD HAVE CAUSED STRIPPED THREADS AND CRACKED ATTACHING FLANGES. SHOULD THESE NUTS FAIL, THE PARTS MAY SEPARATE AND LOSS OF SERVICE BRAKES WOULD RESULT.

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Information provided by the National Highway Traffic Safety Administration.
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Recall Details
Vehicle 1977 GMC C30
Manufacturer GENERAL MOTORS CORP.
Manufactured between 1/1/1900 - 1/1/1900
Recalled on 10/12/1979
Influenced by GENERAL MOTORS CORP.
Owners Notified on 8/10/1977
# Affected 1,232
Recalled for SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM
 
Description ON THE INVOLVED VEHICLES, THE NUTS WHICH ATTACH THE BRAKE MASTER CYLINDER TO THE HYDRO-BOOST UNIT MAY HAVE BEEN OVER-TIGHTENED. THIS COULD HAVE CAUSED STRIPPED THREADS AND CRACKED ATTACHING FLANGES. SHOULD THESE NUTS FAIL, THE PARTS MAY SEPARATE AND LOSS OF SERVICE BRAKES WOULD RESULT.
Consequences
Corrective action DEALER WILL INSPECT FOR CRACKS IN THE ATTACHING FLANGES; UNITS WITH CRACKS PRESENT WILL BE REPLACED. IF NO CRACKS ARE FOUND, THE STUDS WILL BE REMOVED AND THE HOLES DRILLED OUT. THE UNIT WILL BE REASSEMBLED USING BOLTS AND NUTS IN PLACE OF THE EXISTING STUDS.
Notes VEHICLE DESCRIPTION: LIGHT TRUCKS.SYSTEM: SERVICE BRAKES; MASTER CYLINDER TO HYDRO-BOOST UNIT ATTACHING NUTS.CONSEQUENCES OF DEFECT: LOSS OF BRAKING CAPABILITY COULD OCCUR WITHOUT PRIORWARNING AND COULD CAUSE LOSS OF VEHICLE CONTROL AND AN ACCIDENT.
See also
Technical Service Bulletins





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