C30: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM

Go Back To 1977 GENERAL MOTORS CORP. Directory

NHTSA Campaign Number:	77V119000
Vehicle/Equipment Make:	GMC
Vehicle/Equipment Model:	C30
Model Year:	1977
Manufacturer Campaign Number:
Manufacturer Component Description:	SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM
Manufacturers Involved in Recall:	GENERAL MOTORS CORP.
Manufacturered:	-
Type of Report:	V (Vehicle, Equipment or Tire)
Potential Number of Units Affected:	1232
Date Owner Notified By Manufacturer:	19770810
Recall Initiated By:	19770810
Manufacturer Responsible For Recall:	GENERAL MOTORS CORP.
Report Received Date:	19770810
Record Creation Date:	19791012
Regulation Part Number:
Federal Motor Vehicle Safety Standard Number:
Defect Summary:	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.
Consequence Summary:
Corrective Summary:	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.

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