GMC · Canada · Mod
GMC Bus: Not Entered
Affects GMC Bus · 1975 — about 16 vehicles.
The hazard
IN IMPORTED HIGHWAY AND SUBURBAN COACHES, A POSSIBLE BRAKE MALFUNCTION MAY BE CAUSED BY INCORRECT WHEEL BEARING ADJUSTMENTS OR IMPROPERLY POSITIONED SENSORS WHICH TRANSMIT PULSES TO THE ANTI-LOCK COMPUTER, WHICH INCORRECTLY INDICATES THAT A WHEEL LOCK-UP CONDITION EXISTS. THE EFFECT OF THIS IS TO CAUSE A LENGTHENING OF THE STOPPING DISTANCE WHEN THE BRAKES ARE FIRST APPLIED, FOLLOWED BY A SUDDEN BRAKE APPLICATION AT THE END OF THE VEHICLE STOP. SERIAL NUMBERS:- S8H 5304A 128 THROUGH 142 AND P8M 4905A 1177
What to do
Contact your dealer; the remedy details were not included in the filing.
Critical — crash/injury risk now
High — injury risk; see remedy
Moderate — fix at next service
Low — minor / informational