Chevrolet and Gmc Recall 77V172000: Wheels, Hub

NHTSA recall 77V172000 · announced October 12, 1977 · filed by General Motors Corp. · 685 units affected

The problem

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.

What to do

DEALER WILL INSPECT AND REPLACE FRONT AXLE ALUMINUM HUBS WITH STEEL HUBS, WITHOUT CHARGE TO OWNER.

Official NHTSA recall notice →

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.

Vehicles covered by this recall

• 1976 Chevrolet D
• 1977 Chevrolet D
• 1976 Chevrolet F
• 1977 Chevrolet F
• 1976 Chevrolet J9500
• 1976 Chevrolet M
• 1977 Chevrolet M
• 1976 Gmc D
• 1977 Gmc D
• 1976 Gmc F
• 1976 Gmc J9500
• 1977 Gmc J9500
• 1976 Gmc M
• 1977 Gmc M9500
• 1976 Gmc N9500
• 1977 Gmc N9500

Source: National Highway Traffic Safety Administration public recall data. This page reports official records and is not legal, medical, or repair advice.