Vehicle recall 77V172000 · October 12, 1977

Chevrolet D, GMC D and 8 more models

The front axle aluminum hubs on the involved vehicles may contain a deficiency in the barrel area between the inner and outer bearings which may result in cracks which could…

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

Summary: The front axle aluminum hubs on the involved vehicles may contain a deficiency in the barrel area between the inner and outer bearings which may result in cracks which could eventually lead to hub failure.
Remedy: Dealer will inspect and replace front axle aluminum hubs with steel hubs, without charge to owner.
Notes: Vehicle description: heavy trucks equipped with FF931 front axles and motorwheel aluminum front hubs.system: wheels; aluminum hubs.consequences of defect: when hub failure occurs, the separated hub is retainedon the axle spindle by the wheel bearing adjusting nuts. Continued vehicleoperation after a hub separation can result in 1) brake assembly lockup andconsequent loss of vehicle control, 2) excessive heat generation resulting fromthe brake line touching the brake drum which will cause a tire blowout and 3)progressive damage to the hub which would allow the hub, wheel, and tire tobecome disengaged from the vehicle.note: initial hub separation may be accompanied by a distinct sound at themoment of separation, along with thumping or wheel wobble.

Recall details

NHTSA campaign: 77V172000
Reported to NHTSA: October 12, 1977
Filed by: GENERAL MOTORS CORP.
Owner notification: October 31, 1977
Vehicles potentially affected: 685
Initiated by: the manufacturer
Components: Wheels › Hub

Recall 77V172000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

Chevrolet D (1976-1977): 1977, 1976
Chevrolet F (1976-1977): 1977, 1976
Chevrolet J9500 (1976): 1976
Chevrolet M (1976-1977): 1977, 1976
GMC D (1976-1977): 1977, 1976
GMC F (1976): 1976
GMC J9500 (1976-1977): 1977, 1976
GMC M (1976): 1976
GMC M9500 (1977): 1977
GMC N9500 (1976-1977): 1977, 1976

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