1980 GMC C20 Recall

Campaign:

81V010000 on 02/11/1981

Component:

Service brakes, hydraulic:power assist:vacuum

Manufactured:

07/31/1978 - 05/31/1979

Affected:

320,677

Defect:

Fatigue cracks may develop in the brake vacuum booster housing. this may cause a vacuum leak and reduce the effectiveness of the brakes. after prolonged use, the cracks may develop to the extent that the booster may separate from the vehicle.

Correction:

Vehicles will be inspected for fatigue cracks in the brake vacuum booster. those without cracks will have a support brace installed. those with evidence of cracking will have a new brake vacuum booster and support brace installed. this service will be provided at no charge.

Notes:

Vehicle description: light trucks equipped with vacuum power disc/drum brakes.system: service brakes; vacuum brake booster housing.consequences of defect: separation will result in a loss of braking abilitywithout prior warning and may lead to an accident. partial loss of brakingability may also lead to an accident, particularly in situations where minimumstopping distance is required.

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