2010 GMC Sierra

TL* THE CONTACT OWNS A 2010 GMC SIERRA. THE CONTACT STATED THAT WHILE DRIVING 65 MPH WITH THE CRUISE CONTROL ENGAGED THE VEHICLE SUDDENLY ACCELERATED. THE CONTACT MENTIONED THAT THE VEHICLE SPEED INCREASED UP TO 95 MPH. THE CONTACT STATED THAT HE WAS ABLE TO STOP THE VEHICLE BY TURNING OFF THE IGNITION. THE VEHICLE WAS NOT TAKEN TO THE DEALER. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE VIN WAS NOT AVAILABLE. THE FAILURE AND CURRENT MILEAGE WAS 70,000.

DRIVING AT APPROXIMATELY 42 MPH THE VEHICLES WARNINGS LIGHTS CAME ON INFORMING ME THAT THE STABILITRAC NEEDED SERVICE, TRACTION CONTROL WAS NO LONGER WORKING AND THE ENGINE WAS OPERATING AT A LOSS OF POWER. THE ENGINE STARTED SHAKING AND THE DIFFERENTIAL STARTED TO CLUNK AS IF IT WERE GOING IN AND OUT OF ENGAGEMENT. AN IMMEDIATE POWER LOSS, I WAS UNABLE TO KEEP UP WITH TRAFFIC AND WAS IN BECOMING A HAZARD TO OTHER MOTORISTS. THE ENGINE STARTED TO PING AND FELT AS IF IT WERE FIRING ON 2 OR 3 CYLINDERS. I PULLED OVER INTO THE BREAKDOWN LANE AND SHUT THE TRUCK OFF. SEVERAL MINUTES LATER I STARTED THE TRUCK AND IT RAN NORMAL, HOWEVER APPROXIMATELY 2 MILES DOWN THE ROAD IT DID THE EXACT SAME THING. I MANAGED TO TAKE THE "BACK ROADS" HOME WITHOUT ENDANGERING ANYONE. THE NEXT MORNING IT STARTED AND RAN NORMAL. YESTERDAY IT HAPPENED AGAIN ONLY THIS TIME I WAS AT A MAJOR INTERSECTION AND ALMOST CAUSED A COLLISION BECAUSE I WAS UNABLE TO GET THROUGH THE INTERSECTION BEFORE THE LIGHT CHANGED. I MADE IT THROUGH AND CALLED TO HAVE THE TRUCK TOWED TO THE DEALERSHIP. VERY DANGEROUS SITUATION. *TR

DURING A TRIP ALONG WA HIGHWAY 2, WESTBOUND THRU STEVENS PASS, THE TEMPERATURE WAS DROPPING AS INDICATED BY THE VEHICLES OUTSIDE TEMPERATURE INDICATION. AS IT TRAVERSED FROM APPROX 42 DEGREES F TO 36 DEGREES F ALL WINDOWS FOGGED SEVERELY SO AS TO RENDER NO VISIBILITY. THE DEFROSTER WAS ENGAGED DURING THIS EVENT. THIS VEHICLE HAS A MANUAL HVAC SYSTEM. THIS HAS OCCURRED NUMEROUS TIMES AS THE TEMPERATURE TRAVERSES BELOW 36 DEGREES F, ALL TIMES RESULT IN EXCESSIVE CABIN MOISTURE AND WINDOW FOGGING. THIS EVENT HAS BEEN REPORTED BY OTHER 2010/2011 GMC/SILVERADO/AVALANCE, ETC OWNERS. GMC IS AWARE BUT HAS NO FIX AND DEALERS OFFER NO FIX. *KB

TL* THE CONTACT OWNS A 2010 GMC SIERRA HYBRID (NA). THE CONTACT STATED THAT THE BRAKES GRABBED WHEN THE VEHICLE WAS COMING TO A STOP, WHICH MADE THE VEHICLE COME TO AN ABRUPT JERKING STOP. THE CONTACT ALSO STATED THAT WHEN SLOWING DOWN FROM HIGHER SPEEDS, HE HAD TO DEPRESS THE BRAKE PEDAL WITH EXTREME FORCE. THE DEALER GAVE THE CONTACT A MEMO FROM THE MANUFACTURER TO PUMP THE BRAKES ON THE HYBRIDS FOR A SMOOTHER STOP. THE FAILURE MILEAGE WAS 15 AND THE CURRENT MILEAGE WAS APPROXIMATELY 2,000...UPDATED 09/15/11 *BF UPDATED 09/26/11