Hearth Record

Parking brake: driveline: air (Volvo)

Vehicle recall 91V-033. NHTSA received VOLVO GM HEAVY TRUCK CORP’s report on Feb 20, 1991.

NHTSA’s own record, on nhtsa.gov

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The short answer

NHTSA received VOLVO GM HEAVY TRUCK CORP’s report on Feb 20, 1991. Copied from NHTSA on Oct 27, 2026.

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

What’s wrong with it?

TRUCKS LEFT WITH PARK BRAKES ENGAGED COULD BEGIN TO ROLLAFTER THE DISK BRAKES COOLED, AND COULD RESULT IN A VEHICLE CRASH WITHOUTWARNING.

IMPROPER PARK BRAKE CONTROL VALVES MAY HAVE BEEN INSTALLED; THE SUSPECT VEHICLE HAVE DISK BRAKES WITH PARK BRAKE VALVE DESIGNED FOR DRUM BRAKES.

Source:

NHTSA, Recalls flat file before 2010. Released Oct 27, 2026. Updated daily.

  • NHTSA’s part: Parking brake: driveline: air.

What should you do?

REPLACE CONTROL VALVE WITH THE CORRECT DISK BRAKE VALVE.

Source:

NHTSA, Recalls flat file before 2010. Released Oct 27, 2026. Updated daily.

  • How to reach the firm: SYSTEM: PARKING BRAKE CONTROL VALVES.VEHICLE DESCRIPTION: HEAVY TRUCKS.
  • Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.

Which ones are recalled?

NHTSA counts 31 vehicles potentially involved, across everything this recall names.

Source:

NHTSA, Recalls flat file before 2010. Released Oct 27, 2026. Updated daily.

  • Volvo WXLMand 1989 and 1990, before the model years listed here

Who is recalling it?

  • Made by VOLVO GM HEAVY TRUCK CORP.
Source:

NHTSA, Recalls flat file before 2010. Released Oct 27, 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 27, 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.

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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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