What 399 owners told NHTSA about the 2011 GMC Yukon Denali Xl 1500

I WAS DRIVING WITH MY VEHICLE IN AUTO 4WD, BECAUSE WE HAD ICY ROADS. MY VEHICLES REAR DRIVE SLIPPED ON SOME ICE AND THEN I GOT A MESSAGE INDICATING MY STABILIZER SYSTEM WAS NEEDING WORK, THEN THE ELECTRICAL SYSTEM (INSTRUMENTATION DASH) STARTED TO FLASH ON AND OFF. I PULLED OFF THE ROAD AND TURNED OFF MY VEHICLE AND THEN TRIED TO RESTART IT AND IT WOULD NOT START. I TRIED A 2ND TIME AND IT STARTED, PUT IT IN GEAR AND STARTED BACK OUT ON THE ROAD. MY ELECTRICAL SYSTEM STARTED TO GO CRAZY ALL OF THE SUDDEN, ALL THE LIGHTS STARTED TO FLASH, MY POWER DOORS STARTED TO LOCK AND UNLOCK SIMULTANEOUSLY, THE ENGINE STARTED TO ACCELERATE ITS RPM'S, AND DOWN/UP SHIFTING MY GEARS, MY DASH BOARD INSTRUMENTS STARTED FLASHING, HEATING AND AIR CONDITIONING FAN WAS SPEEDING UP AND SLOWING DOWN, THEN TURNING ON AND OFF. I THOUGHT MY VEHICLE WAS POSSESSED BY A DEMON REALLY PUTTING A SCARE IN ME. I WAS SCARED THAT IT WAS GOING TO ACCELERATE AND I WAS NOT IN CONTROL AT ALL, SO I IMMEDIATELY PULLED OFF THE ROAD AND TURNED THE VEHICLE OFF. IT WOULD NOT RESTART ONCE AGAIN, ON MY 3RD ATTEMPT IT STARTED. I PUT IT IN GEAR AND IT WENT GOOD. I THINK THE INSTRUMENTATION FLASHED MAYBE ONE OR TWO TIMES, BUT OVERALL IT WAS DRIVING, THANK GOD, BECAUSE IS WAS COLD OUT AND I WAS IN A RURAL AREA. FOUR DAYS LATER I DROVE MY VEHICLE TO WORK, WENT OUT TO TAKE IT TO LUNCH AND IT WOULD NOT START, NOTHING WOULD WORK, COMPLETELY DEAD. I HAD IT TOWED TO SHOTTENKIRK CHEVROLET IN QUINCY, IL, WHICH IS WHERE IT IS AWAITING THE DIAGNOSTIC REPORT. 1/16/2020. I CANNOT TELL YOU ENOUGH, THE WHOLE ORDEAL SCARED THE LIVING DAYLIGHTS OUT OF ME.

NHTSA ODI 11299974

AIR BAG

NHTSA ODI 11067277

I WAS ON THE HIGHWAY DRIVING THROUGH BOSTON IN THE FAST LANE, GOING ABOUT 70MPH WHEN ALL OF A SUDDEN THE STABILITY CONTROL LIGHT CAME ON WITH THE CHECK ENGINE LIGHT AND THE ENGINE REDUCED POWER LIGHT AND MY VEHICLE TOTALLY LOST POWER TO THE GAS PEDAL. I WAS ABLE TO GET INTO THE SLOW LANE BUT MY VEHICLE WAS NOT ABLE TO GO FASTER THAN 35MPH AND THERE WAS HARDLY POWER TO MY GAS PEDAL. LUCKILY, I MADE IT TO AN OFF RAMP, AS I STARTED TO COME TO A STOP, THE ENGINE WAS RUNNING VERY ROUGH AND IT FELT LIKE IT WAS SHAKING THE VEHICLE BACK AND FORTH. I BARELY MADE IT INTO A EMPTY PARKING LOT AND SHUT THE ENGINE OFF. I MANAGED TO MAKE IT TO MY MECHANIC, WHO GOT A THROTTLE SENSOR CODE FROM THE ENGINE. HE TOLD ME ABOUT A SPECIAL COVERAGE ADJUSTMENT #12273B FROM GMC, REGARDING THIS EXACT ISSUE AND TOLD ME TO TAKE IT TO GMC. GMC TOLD ME, MY VEHICLE ISN'T LISTED FOR THIS ADJUSTMENT, EVEN THOUGH, IT SAYS IT SHOULD COVER 2008-20111 GMC YUKONS. APPARENTLY, GMC SAID MY VIN ISN'T LISTED AS HAVING THE FAULTY PART. I ALMOST DIED THIS MORNING IN THE FAST LANE IN BOSTON WITH THE EXACT PROBLEM GMC DESCRIBES IN THE 12273B. GMC SAID I'M NOT COVERED AND HAVE TO PAY OUT OF POCKET. ABSURD. *TR

NHTSA ODI 10938494

THE VEHICLE SUDDENLY LOST POWER AND THE STABILI-TRAC SYSTEM WARNING APPEARED IN THE DIC, THEN THE TRACTION CONTROL SYSTEM WARNING APPEARED IN THE DIC, THEN ENGINE POWER REDUCED BY 16% IN THE DIC. DROVE VEHICLE TO EXIT RAMP AND TURNED ENGINE OFF. VEHICLE RESTARTED WITH ONLY THE CHECK ENGINE LIGHT ON AND NO WARNINGS IN THE DIC. THE ENGINE DID NOT HOWEVER RUN SMOOTHLY. I TOOK IT TO A DEALER WHO CLEAR SOME CODES AND REPLACED THE TPS. CHECKED ALL FUSES. NO FURTHER PROBLEM. HOWEVER A FRIEND HAS THE SAME VEHICLE IN A 2010 MODEL. SAME PROBLEM DEALER REPLACED A THROTTLE BODY. CHECK OUT THE GM FORUM AT [XXX] THIS FORUM SHOWS LITERALLY HUNDREDS OF COMPLAINTS ABOUT THE SAME PROBLEM AND IN SOME CASES CAUSING ACCIDENTS. MY VEHICLE WAS REPAIRED ON 1-24-2013, AND SO FAR IT APPEARS THAT MY PROBLEM HAS BEEN RESOLVED, HOWEVER IT APPEARS GM IS NOT REALLY FIXING THE PROBLEM. I AM CONCERNED ABOUT THIS FOR THE NEXT OUT OF TOWN TRIP I TAKE. *TR PARTS OF THIS DOCUMENT HAVE BEEN REDACTED TO PROTECT PERSONALLY IDENTIFIABLE INFORMATION PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

NHTSA ODI 10494730