Service brakes, hydraulic: foundation components: differential proportional valve (Buick, Pontiac and CHEVROLET and 2 more)
Vehicle recall 83V-105. NHTSA received GENERAL MOTORS CORP.’s report on Oct 13, 1983.
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 Oct 13, 1983. 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.
THE BRAKE PROPORTIONER VALVES MAY BREAK AND SEPARATE FROM THE MASTER CYLINDER.
THIS WOULD ALLOW BRAKE FLUID TO LEAK AND WOULD RESULT IN A PARTIAL LOSS OF THE BRAKE SYSTEM.
NHTSA, Recalls flat file before 2010. Released Oct 28, 2026. Updated daily.
- NHTSA’s part: Service brakes, hydraulic: foundation components: differential proportional valve.
What should you do?
THE DEALER WILL INSPECT AND, IF NECESSARY, REPLACE ALL SUSPECT VALVES.
NHTSA, Recalls flat file before 2010. Released Oct 28, 2026. Updated daily.
- How to reach the firm: VEHICLE DESCRIPTION: PASSENGER VEHICLES.SYSTEM: SERVICE BRAKES; BRAKE PROPORTIONER VALVES.CONSEQUENCES OF DEFECT: SINCE THIS IS A DUAL BRAKE SYSTEM, PART OF THE SYSTEMWILL STILL WORK AND ALLOW THE VEHICLE TO BE STOPPED, BUT OVER A GREATERDISTANCE. PARTIAL LOSS OF THE BRAKING SYSTEM AT A TIME WHEN MINIMUM STOPPINGDISTANCE IS REQUIRED COULD RESULT IN A VEHICLE ACCIDENT WITHOUT PRIOR WARNING.
- Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.
Which ones are recalled?
NHTSA counts 352,036 vehicles potentially involved, across everything this recall names.
NHTSA, Recalls flat file before 2010. Released Oct 28, 2026. Updated daily.
- Buick Skyhawkand 1983, before the model years listed here
- Pontiac J2000and 1983, before the model years listed here
- Chevrolet Celebrityand 1983, before the model years listed here
- Cadillac Cimarronand 1983, before the model years listed here
- Oldsmobile Cutlassand 1983, before the model years listed here
- Chevrolet Cavalierand 1983, before the model years listed here
- Buick Skylarkand 1983, before the model years listed here
- Oldsmobile Cieraand 1983, before the model years listed here
- Chevrolet Citationand 1983, before the model years listed here
- Oldsmobile Firenzaand 1983, before the model years listed here
- Oldsmobile Omegaand 1983, before the model years listed here
- Pontiac Phoenixand 1983, before the model years listed here
- Pontiac 6000and 1983, before the model years listed here
- Buick Centuryand 1983, 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
-
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.