Service brakes, hydraulic: foundation components: master cylinder (GMC and Chevrolet)
Vehicle recall 70V-097. NHTSA received GENERAL MOTORS CORP.’s report on Aug 12, 1970.
Watch and the shortlist are kept with a free account, on every device. Your watch list. NHTSA’s own record is on nhtsa.gov.
The short answer
NHTSA received GENERAL MOTORS CORP.’s report on Aug 12, 1970. 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.
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 notice gives no remedy in a field of its own.
NHTSA, Recalls flat file before 2010. Released Oct 28, 2026. Updated daily.
- How to reach the firm: POSSIBILITY THAT COVER ON DUAL HY- DRAULIC BRAKE MASTER CYLINDER MAY BECOMEDISTORTED DUE TO EXCESSIVE TIGHTENING OF ATTACHMENT BOLT.IF THIS CONDITIONEXISTS, BRAKE FLUID MAY LEAK FROM UNDER COVER AND EXCESSIVE LOSS OF BRAKE FLUIDCOULD RESULT IN REDUCED BRAKE EFFICIENCY.(CORRECT BY REPLACING WITH NEWIMPROVED TYPE COVER.)
- Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.
Which ones are recalled?
NHTSA counts 21,000 vehicles potentially involved, across everything this recall names.
NHTSA, Recalls flat file before 2010. Released Oct 28, 2026. Updated daily.
- GMC S4500and 1969 and 1970, before the model years listed here
- Chevrolet C50and 1969 and 1970, before the model years listed here
- Chevrolet C60and 1969 and 1970, before the model years listed here
- Chevrolet SE50and 1968, 1969 and 1970, before the model years listed here
- Chevrolet SS50and 1968, 1969 and 1970, before the model years listed here
- GMC S6500and 1969 and 1970, before the model years listed here
- GMC S7500and 1969 and 1970, before the model years listed here
- Chevrolet SE40and 1968, 1969 and 1970, before the model years listed here
- GMC S5500and 1969 and 1970, before the model years listed here
- Chevrolet C40and 1969 and 1970, before the model years listed here
- Chevrolet CG50and 1969 and 1970, before the model years listed here
- Chevrolet CD50and 1969 and 1970, before the model years listed here
- Chevrolet M60and 1969 and 1970, before the model years listed here
- Chevrolet M40and 1969 and 1970, before the model years listed here
- Chevrolet SS40and 1968, 1969 and 1970, before the model years listed here
- Chevrolet M50and 1969 and 1970, before the model years listed here
- Chevrolet SE60and 1968, before the model years listed here
- Chevrolet SS60and 1968, before the model years listed here
Who is recalling it?
- Made by GENERAL MOTORS CORP..
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.
Hearth Record wrote these lines.
Sources
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National Highway Traffic Safety Administration, Recalls flat file before 2010 (FLAT_RCL_PRE_2010).
Released Oct 28, 2026 and checked Oct 28, 2026. Updated daily. Public domain (U.S. Government work).
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.