Vehicle recall 81V010000 · January 13, 1981

Chevrolet C20, GMC C20 and 5 more models

Fatigue cracks may develop in the brake vacuum booster housing.

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

Summary: 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.
Remedy: 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.

Recall details

NHTSA campaign: 81V010000
Reported to NHTSA: January 13, 1981
Filed by: GENERAL MOTORS CORP.
Owner notification: January 9, 1981
Vehicles potentially affected: 320,677
Initiated by: the manufacturer
Components: Service brakes, hydraulic › Power assist › Vacuum

Recall 81V010000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

Chevrolet C20 (1979-1980): 1980, 1979
Chevrolet C30 (1979-1980): 1980, 1979
Chevrolet K20 (1979-1980): 1980, 1979
Chevrolet K30 (1979-1980): 1980, 1979
GMC C20 (1979-1980): 1980, 1979
GMC K20 (1979-1980): 1980, 1979
GMC K30 (1979-1980): 1980, 1979

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