- Vehicles
- 1,232
- Built between
- Not published
- Models
- 2
- Recall type
- Vehicle
- Initiated by
- Manufacturer
- Owners notified
- 10 August 1977
- Repaired
- Not reported
- Unrepaired
- Not reported
Does this affect my vehicle?
The manufacturer did not publish a build-date range for this recall, so the model and year list below is the only way to tell whether your vehicle is covered.
- 1977 Chevrolet C30
- 1977 GMC C30
What the defect is
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.
What gets fixed
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.
Timeline
- Recall reported to NHTSA10 August 1977
- Owners notified10 August 1977
Your rights
A safety recall repair is free. Under US federal law the manufacturer must fix a safety defect at no cost to you — no charge for parts, labor or diagnosis — whether or not you are the original owner. A dealer cannot charge you for recall work, and cannot require you to have bought the vehicle from them.
That entitlement is not unlimited. It applies where the vehicle was first sold less than 15 years before the recall was announced — 5 years for tires. Past that a manufacturer may still do the repair free of charge, and many do, but they are no longer obliged to. This recall was reported on 10 August 1977.
To arrange the repair, contact any franchised dealer for the brand. If a dealer refuses the work or tries to charge for it, you can report that to NHTSA at nhtsa.gov/recalls or on 1-888-327-4236.
Official source
- Recalling manufacturer
- GENERAL MOTORS CORP.
- Recall initiated by
- MFR
Everything on this page — the models listed, the build dates and the repair figures — comes from the manufacturer's filing to NHTSA and describes the vehicle line as a whole, not any individual car. Only the manufacturer can confirm whether a specific vehicle is affected, and whether its recall work has already been carried out. Check yours by VIN and read the official notice at nhtsa.gov/recalls.
Additional 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.
Check your own vehicle
This page describes the recall, not any one car. To see which recalls cover a specific vehicle, search by make, model and year.
A VIN lookup here identifies your vehicle and shows recalls issued for that make, model and year. It cannot tell you what is still open on your individual car - only the manufacturer knows that. Search by VIN instead, or check your VIN at nhtsa.gov for whether a recall is still open on your individual car.