THE REAR AXLE SHAFTS RECEIVED IMPROPER HEAT TREATMENT DURING MANUFACTURE. THE SHAFT MAY BREAK AND THE TIRE AND WHEEL ASSEMBLY COULD DISENGAGE FROM THE VEHICLE.

Consequence & remedy

Consequence: Not supplied

Remedy: DEALER WILL REPLACE BOTH REAR AXLE SHAFT ASSEMBLIES, IF NECESSARY, FREE OF CHARGE.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

EA92041 · Fuel System Integrity

Opened Dec 8, 1992 · Closed Mar 9, 1995

Status: closed (inferred from source dates) · Fuel System, Gasoline:storage:tank Assembly

There is no summary currently available

PE88016 · Exhaust Manifold Leaks

Opened Jan 14, 1988 · Closed Mar 31, 1988

Status: closed (inferred from source dates) · Vehicle Speed Control:linkages

SUMMARY:SOME 1981-86 TRUCKS WITH 7.4L ENGINES AND CAST IRON EXHAUSTMANIFOLDS MAY EXPERIENCE A CONDITION WHERE AN EXHAUST LEAK DEVELOPSBETWEEN THE MANIFOLD AND THE CYLINDER HEAD MATING SURFACE CAUSING A NOISECONDITION. MOST OF THE REPORTS (AND ALL OF THE INJURIES AND THEMANIFOLD FIRE) ARE FROM THE P30 MOTORHOME CHASSIS.GM STATES THAT A WARPEDOR CRACKED MANIFOLD WOULD PERMIT SMALL AMOUNTS OF EXHAUST GAS LEAKAGEGENERALLY RESULTING IN NOTICEABLE NOISE AND FUMES.THE EXHAUST MANIFOLDSARE SUSCEPTIBLE TO EXTREME HEAT CONDITIONS (SUCH AS OPERATING UNDER SEVEREENGINE/VEHICULAR LOAD CONDITIONS AND HIGH AMBIENT TEMPERATURES).THEMOTORHOME APPLICATION IS PARTICULARLY SUSCEPTIBLE TO THIS ALLEGED DEFECTSINCE THE VEHICLE IS NEARLY ALWAYS AT OR NEAR THE GVWR OF THE VEHICLE.THEFEW NUMBER OF REPORTS RECEIVED BY ODI FOR A PROBLEM WHICH BEGAN 8 YEARS AGOSUGGESTS THAT THE DEFECT EITHER OCCURS INFREQUENTLY OR IS NOT PERCEIVED ASA SIGNIFICANT SAFETY HAZARD.THE SERVICE BULLETIN WAS ISSUED TO IDENTIFYTHE HIGH TEMPERATURE PROBLEM AND PROVIDE A REMEDY AGAINST REOCCURRENCE.===