Hearth Record

Service brakes, hydraulic: foundation components: master cylinder (Oldsmobile)

Vehicle recall 78V-247. NHTSA received GENERAL MOTORS CORP.’s report on Nov 13, 1978.

NHTSA’s own record, on nhtsa.gov

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The short answer

NHTSA received GENERAL MOTORS CORP.’s report on Nov 13, 1978. Copied from NHTSA on Oct 28, 2026.

Every line below is in NHTSA’s own words, with its source beside it.

What’s wrong with it?

The notice gives no hazard in a field of its own.

A GASKET WAS MISTAKENLY PLACED BETWEEN THE BRAKE MASTER CYLINDER AND THE POWER BOOST WHICH PREVENTED THE TWO PARTS FROM FITTING TOGETHER PROPERLY.

DAMAGE MAY HAVE RESULTED TO THE MOUNTING EARS OF THE MASTER CYLINDER AND THE HYDRO-BOOST.

THIS CONDITION COULD LEAD TO BRAKE FAILURE.

Source:

NHTSA, Recalls flat file before 2010. Released Oct 28, 2026. Updated daily.

  • NHTSA’s part: Service brakes, hydraulic: foundation components: master cylinder.

What should you do?

THE DEALER WILL INSTALL A NEW BRAKE MASTER CYLINDER AND HYDRO-BOOST UNIT, FREE OF CHARGE, ON ALL AFFECTED VEHICLES.

Source:

NHTSA, Recalls flat file before 2010. Released Oct 28, 2026. Updated daily.

  • How to reach the firm: VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH DIESEL ENGINES.SYSTEM: SERVICE BRAKES; MASTER CYLINDER.CONSEQUENCES OF DEFECT: LOSS OF BRAKING COULD OCCUR, CAUSING LOSS OF VEHICLECONTROL AND AN ACCIDENT.
  • Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.

Which ones are recalled?

NHTSA counts 67 vehicles potentially involved, across everything this recall names.

Source:

NHTSA, Recalls flat file before 2010. Released Oct 28, 2026. Updated daily.

  • Oldsmobile 98and 1979, before the model years listed here
  • Oldsmobile 88and 1979, before the model years listed here

Who is recalling it?

  • Made by GENERAL MOTORS CORP..
Source:

NHTSA, Recalls flat file before 2010. Released Oct 28, 2026. Updated daily.

What the record doesn’t say

  • NHTSA’s recall file doesn’t say whether anyone was hurt.
  • Whether one vehicle or seat has been fixed: only its maker, or NHTSA’s lookup with a VIN, can say.
  • This recall names only model years before 2015, which have no pages here. Your VIN, at NHTSA, says which recalls are open on a vehicle.
  • How many have been returned or fixed isn’t in the notice.
Source:

Hearth Record wrote these lines.

Sources

Source:

Vehicle, car seat, tire and vehicle equipment recalls, owner complaints and crash ratings are from the National Highway Traffic Safety Administration (NHTSA). Copied on Oct 28, 2026.

How to read a record

Four things every record does, shown on an example record made up for this guide.

An example record, made up for this guide

An example nursing home

Made up for this guide: no real place is shown

Not fully inspected in over two years (CMS flag)

11 health citations at the latest inspection cycle

The state average is 14.3.

Source:

CMS, State and US Averages and Health Deficiencies. Released Oct 28, 2026. Updated monthly.

From the homeNone yet. Replies and paid listings aren’t open, and when they open they will sit here, below the record.

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Every fact names its source.

Who published it, when, and how often it changes sit beside each fact, with a link to the agency’s own file.

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