GENERAL MOTORS issued a recall on multiple vehicle models

SOME OF THESE VEHICLES EQUIPPED WITH AIR BRAKES AND ANTI-LOCK BRAKE SYSTEMS MAY EXHIBIT BRAKE CONTROL ELECTRICAL HARNESS CHAFING. THIS MAY CAUSE GROUNDING OF THE HARNESS (WHICH PROVIDES POWER TO THE FRONT BRAKE MODULATOR VALVES) AND A SHUT OFF OF THE ABS FEATURE WITH THE FOUNDATION BRAKES STILL FUNCTIONING. HOWEVER, OTHER WIRES IN THE HARNESS WHEN GROUNDED, WILL RESULT IN NO AIR REACHING ONE OR BOTH OF THE FRONT BRAKE CHAMBERS. RESULTING REDUCTION OF BRAKING CAPABILITY COULD CAUSE INCREASED STOPPING DISTANCES AND A CRASH. IN EITHER INSTANCE, ELECTRICAL GROUNDING WILL CAUSE A DASH PANEL WARNING LIGHT TO ILLUMINATE.CORRECTION: DEALERS WILL INSPECT FOR CHAFING AND PROPER ROUTING OF THE WIRING HARNESS AND REPAIR IF NECESSARY.