RoadVitals

1986 GMC B60

Recalls, owner-reported complaints, investigations and safety data

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
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Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
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InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
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Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
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Overview

Our database contains no NHTSA owner-reported complaints for the 1986 GMC B60. 1 NHTSA investigation names it.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Safety recalls

No recalls in our database for this model year

That does not guarantee a specific vehicle is unaffected — recalls are issued against VINs, and new campaigns are announced regularly. Check a VIN on NHTSA.gov.

Safety investigations

NHTSA inquiries naming this vehicle. An investigation is not a finding of a defect.

PE87039ClosedPreliminary Evaluation

REAR DISC BRAKE FAILURE

Opened Jul 14, 1987
Closed Oct 13, 1987

SUMMARY OF INFORMATION FROM MANUFACTURER:VEHICLES INVOLVED ARE EQUIPPEDWITH FOUR WHEEL HYDRAULIC DISC BRAKES.THE ALLEGED DEFECT PERTAINS TO THEREAR BRAKES ONLY AND INVOLVES SEPARATION (DEBONDING) OF THE BRAKE LININGPAD FROM THE STEEL BACKING (SHOE).ALL FIELD REPORTS AND COMPLAINTSINVOLVE FLEETS.THE SPECIFIC NUMBER OF ACTUAL SEPARATIONS IN UNKNOWN.ANALYSIS:DEBONDING RESULTS IN DISINTEGRATION AND POSSIBLY EJECTION OF THEPAD FROM THE CALIPER.IT IS INITIATED BY A COMBINATION OF TIME AND HIGHOPERATING TEMPERATURES, WHICH CAUSE THE ORGANIC RESINS IN THE BONDINGADHESIVE TO BREAK DOWN AND LOOSE THEIR STRENGTH.WHEN THE PAD IS EJECTED,THE CALIPER PISTON WILL MOVE OUT UPON THE NEXT FOOT APPLICATION, FORCINGTHE REMAINING STEEL SHOE TO CONTACT THE ROTOR.FURTHER OPERATION MAYDAMAGE THE PISTON O RING, RESULTING IN BRAKE FLUID LEAKAGE AND PARTIALBRAKE LOSS.SINCE THE VEHICLES ARE EQUIPPED WITH A DUAL MASTER CYLINDERAND A SPLIT BRAKE SYSTEM, A PORTION OF THE BRAKE SYSTEM WOULD REMAINFUNCTIONAL.ALTHOUGH REPORTS ON THIS PROBLEM COMMENCED IN 1983, THERE ARE NO KNOWNACCIDENTS OR INJURIES.PRESENTLY THE MOST SIGNIFICANT AFFECT OF THEPROBLEM IS THE ECONOMIC LOSS TO THE FLEETS DUE TO THE NECESSARY INCREASEDFREQUENCY OF MAINTENANCE.PRODUCTION HAS COMMENCED ON 1988 MODEL YEARVEHICLES USING A NEW PAD WITH IMPROVED MECHANICAL LOCK WHICH ELIMINATESDEBONDING, ACCORDING TO FIELD TESTING.THE NEW PAD SUPERSEDES THE PREVIOUSPAD, WILL BE AVAILABLE THROUGH GM PARTS DISTRIBUTORS IN THE NEAR FUTURE,AND IS EXPECTED TO REDUCE MAINTENANCE FREQUENCY.THIS ISSUE BECOMES SAFETYRELATED ONLY IF IGNORED.PROPOSED ACTION:CLOSE THIS PE.NO SAFETY RELATED DEFECT TREND HAS BEENIDENTIFIED.MAINTAIN CONTACT WITH THE SCHOOLBUS INDUSTRY AND MONITORCOMPLAINT DATA ON THIS ISSUE.===

SERVICE BRAKES, HYDRAULIC

Recent owner complaints

Reports submitted to NHTSA, shown in the owner's own words

No owner complaints recorded for this model year

Either none have been filed with NHTSA, or this vehicle is too new for reports to have accumulated.