NHTSA Complaint #10780922 — 2006 GMC YUKON

THE FIRST TIME THIS HAPPENED I WAS DRIVING AT APPROX. 45 MPH ON SECONDARY ROAD WHEN ALL LIGHTS DIMMED AND THE VEHICLE POWER WENT DOWN TO ALMOST NOTHING. THE POWER STEERING AND BRAKES WENT OUT AND I HAD TO PULL OFF OF THE HIGHWAY. I TURNED THE IGNITION OFF AND WAITED A FEW MINUTES, THEN RE-STARTED WHICH SEEMED TO HAVE RE-SET THINGS. IT RAN OK TO MY DESTINATION. BUT SINCE THEN (A YEAR OR SO) IT BOGS DOWN WHEN STARTING OUT FROM IDLE SUCH AS A TRAFFIC LIGHT, AND THE LIGHTS DIM. AT THE SAME TIME, IT MAKES A GRINDING SOUND AS IF FROM THE BRAKES AND THE BRAKE PEDDLE BECOMES STIFF AS THOUGH IT IS TRYING TO OFFSET MY BRAKING. WHEN THIS HAPPENS THE STABILITY INDICATOR STATES "TRACTION ACTIVE". ONCE THE VEHICLE IS MOVING AGAIN, IT WILL GO OFF AND THE VEHICLE WILL ACT NORMALLY. I DISCOVERED THAT MANUALLY OVER-RIDING THE TRACTION (SHUTTING IT OFF), IT ELIMINATES THE HESITATION. BUT IT STILL MAKES THE GRINDING/GROANING SOUND ALONG WITH THE BRAKE ISSUE. ONCE IS GETS UP TO SPEED, EVERYTHING IS FINE. ALL OF THIS IS JUST ON STARTING OUT AFTER A STOP. WE HAVE HEARD OTHERS THAT HAVE THE SAME PROBLEM, BUT HAVE NOT BEEN ABLE TO GET IT RESOLVED. IT APPEARS TO BE A COMMON PROBLEM, BUT NO RECALLS HAVE BEEN ISSUES TO MY KNOWLEDGE. IT IS A REAL DANGER WHEN TRYING TO START ONTO A HIGHWAY OR INTERSECTION.