VEHICLE DESCRIPTION: CLASS 8 HEAVY DUTY TRUCKS. THE AIR SUSPENSION CONTROL VALVE SUPPLY LINE WAS NOT PLUMBED THROUGH AN AIR PRESSURE PROTECTION VALVE. IN THE EVENT OF A FAILURE, THERE WOULD BE LOSS OF AIR PRESSURE IN THE 'B' SYSTEM AIR RESERVOIR THAT SUPPLIES AIR PRESSURE FOR THE FRONT STEER AXLE BRAKES.
Consequence & remedy
Consequence: THIS CONDITION WOULD RESULT IN INCREASED STOPPING DISTANCES.
Remedy: DEALERS WILL INSTALL THE NECESSARY AIR PRESSURE PROTECTION VALVE.
THE PINCH BOLT USED TO RETAIN THE PITMAN ARM TO THE STEERING GEAR MAY NOT MEET THE HEAT TREAT SPECIFICATION FOR A GRADE 8 FASTENER AND MAY STRIP BEFORE PROPER TORQUE IS ACHIEVED.
Consequence & remedy
Consequence: THE PINCH BOLT MAY FAIL CAUSING SEPARATION OF THE PITMANARM AND THE STEERING LINKAGE, AND LOSS OF STEERING CONTROL WHICH COULD RESULTIN AN ACCIDENT.
Remedy: REPLACE THE PINCH BOLTS WITH PROPERLY HEAT TREATED BOLTS.
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
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No exact-year investigations in this snapshot.
1991 White GMC Wia Problems, Complaints & Recalls | Skip That Year
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