What 505 owners told NHTSA about the 2011 Chevrolet Impala

CAR THREW MESSAGE SAYING REDUCED ENGINE POWER, SERVICE TRACTION CONTROL AND SERVICE STABILITRAK ALL AT ONCE. MY CAR WOULD NOT GO AND WAS LOSING SPEED WHILE I WAS ON THE INTERSTATE. I WAS FORCED TO PULL OFF AT A HEAVILY TRAVELED PART OF THE ROAD AND WAIT FOR ASSISTANCE. I HAD TO HAVE MY CAR TOWED AND WORKED ON. THE MECHANIC SAID THAT IT IS POSSIBLY A BAD THROTTLE BODY. I HAVE HAD THIS SAME THING HAPPEN TWO OTHER TIMES WITHIN LESS THAN A YEAR. I WOULD LIKE IT TO BE NOTED THAT THIS TIME IT LEFT ME IN A DANGEROUS SITUATION. I WENT FROM DOING THE SPEED LIMIT WHICH WAS 70 THEN IT GRADUALLY DECREASED IN SPEED UNTIL IT WOULD NO LONGER RUN AT ALL.

NHTSA ODI 11090033

SUDDEN DISPLAYED MESSAGE WHILE DRIVING: SERVICE STABILITY CONTROL , SERVICE TRACTION CONTROL , REDUCED ENGINE POWER. CAR WAS UNABLE TO GO AFTER STOP. PARKED THE CAR AND RESTARTED WITH JUST AN ENGINE LIGHT, BUT MESSAGES STARTED TO FLASH AGAIN. DID GET ME HOME.

NHTSA ODI 11090035

WHEN COMING TO A STOP MY ABS SERVICE STABILITY TRACTION CONTROL SERVICE BRAKE LIGHTS ALL COME ON THEN MY 2011 HESITATION TO STOP WHEN BRAKING. EVEN IF I GO SLOW OR JUST STOPPING AT A STOP SIGN. IT PUSHES MY FOOT FROM THE BRAKE. A CRANKING NOISE SOUND. I HAVE GOTTEN BRAKE, TIRE RODS, ROADERS AND NEW TIRES. I DON'T KNOW WHAT ELSE TO DO. THIS HAPPENS SPECIFICALLY WHEN ON THE HIGHWAY WHEN HAVING TO COME TO A SUDDEN STOP. I ALMOST CRASHED SEVERAL TIMES NOT BEING ABLE TO STOP. MIND YOU MY CAR ONLY HAS 65000 MILES ON IT. THIS IS JUST TOO SOON.

NHTSA ODI 11089813

THE CHECK ENGINE AND STABILITRAK LIGHT HAS COME ON AND OFF SEVERAL TIMES AND ALSO CAUSING MY VEHICLE TO SLOW DOWN. I AM NOW AT THE POINT OF DESPERATION AS THIS MORNING, WHILE I WAS ON MY WAY TO WORK, THE LIGHTS CAME ON AGAIN, ONLY THIS TIME THE CAR TURNED ITSELF OFF BUT PROCEEDED TO ROLL EVEN WITH ME ATTEMPTING TO PUT ON BRAKES. I HAVE READ IN SEVERAL FORUMS THAT THIS HAS HAPPENED TO OTHERS, INCLUDING SOMEONE CRASHING INTO A LIGHT POLE. PLEASE ADVISE WHAT CAN BE DONE, AS I NOW FEAR FOR MY LIFE WITH THIS CAR.

NHTSA ODI 11081186

WHY IS THERE NOT A RECALL ON STABILITY TRACTION CONTROL? I SEE THOUSANDS OF COMPLAINTS ON THE INTERNET FOR GM VEHICLES. IT SEEMS TO ME THAT GM JUST DOESN'T CARE ENOUGH AFTER THE SALE. I JUST BOUGHT 2011 IMPALA AND NOW THE STABALITRACK SERVICE LIGHT KEEPS COMING ON WHILE GOING DOWN THE ROAD. IT WILL DO THIS FOR NO APPARENT REASON BUT HAPPENS MOSTLY WHEN ACCELERATING. USING THE CRUISE CONTROL ON LEVEL ROAD AND DASH WARNING LIGHT COMES ON AND THROWS CAR OUT OF CRUISE, DECELERATING WHILE GAGES FLIP AROUND ALL OVER THE PLACE. POWER LOSS AND LACK OF ACCELERATION ARE DEFINITELY SAFETY ISSUES. PULLING OUT OF MY DRIVEWAY ONTO MICHIGAN HIGHWAY AND I GET HALFWAY ACROSS HIGHWAY AND CAR STOPS. THIS HIGHWAY IS 55 MPG AND WHILE I WOULD HAVE HAD PLENTY OF TIME TO CROSS THE LANE, CAR LOOSES ALL POWER. LOOKING ON THE INTERNET GIVES NO HELP FOR A FIX. I TURNED THE STABILITY TRACTION CONTROL OFF, BUT THE PROBLEM DOES NOT GO AWAY. I SEE ON THE INTERNET THAT MANY PEOPLE HAVE TAKEN THERE VEHICLE TO THE DEALER GARAGE ONLY TO GET CHARGED EXORBITANT PRICES FOR "POSSIBLE" THAT DO NOT SEEM TO HELP. GM SHOULD GET THIS FIGURED OUT AND NOT LET EVERY DEALER GARAGE DO THEIR OWN GUESSING ON WHAT WILL FIX THIS VERY DANGEROUS PROBLEM THAT IS NOT LIMITED TO SINGLE MODEL OR YEAR BUT SPANS MANY YEARS WITH MANY MODELS. MY FIRST VEHICLE WAS A GM BUT THIS MAY BE MY LAST GM. I WOULD LIKE TO GIVE A DATE BELOW BUT THIS HAS BEEN HAPPENING SINCE I BOUGHT THE VEHICLE ABOUT A MONTH AGO AND GETTING STEADILY WORSE. I HAVE HAD IT CHECKED OUT BUT NOBODY CAN GIVE ME ANY USEFUL ANSWERS

NHTSA ODI 11081263

REDUCED ENGINE POWER, SERVICE STABILITRAK AND TRACTION CONTROL. SPENT $300 TO GET THE GAS PEDAL SENSOR REPLACED 4 DAYS AGO AND ITS DOING IT AGAIN. CAR LOSES POWER (I WAS I-65 GOING ABOUT 60 MPH). SHIFTS HARD, TOO.

NHTSA ODI 11079432

I WILL BE DRIVING, SOMETIMES ON THE HIGHWAY AT HIGH SPEEDS, AND THE CHECK ENGINE LIGHT WILL COME AND SAY "ENGINE POWER REDUCED" "SERVICE STABILITRACK". THE ENGINE FASTLY REDUCES SPEED AND I AM UNABLE TO ACCELERATE. THIS IS VERY DANGEROUS AND COULD CAUSE AN ACCIDENT.

NHTSA ODI 11074325

MY CHEVY SAYS STABILIZE TRACK THEN ENGINE POWER SLOWS IT'S VERY DANGEROUS SHOULD BE A RECALL.

NHTSA ODI 11073948

BOUGHT 2011 IMPALA LT 2 WEEKS AGO, FIRST TIME DRIVING TO WORK ON FREEWAY - ENGINE LIGHT COMES ON AND MESSAGE COMES UP - ENGINE POWER LOSS, STABILITAK TRACTION CONTROL. CAR COMPLETELY SHUT DOWN!! ALMOST GOT HIT BY SEMI . NO ONE HAS ANY ANSWERS!?

NHTSA ODI 11067391

ON TWO DIFFERENT OCCASIONS, ONCE ABOUT A YEAR AGO AND AGAIN TODAY, MY 2011 CHEV IMPALA LTZ DISPLAYED A SERIES OF ROTATING ALERT MESSAGES -- 1. SERVICE TRACTION CONTROL 2. SERVICE STABILITRAK 3. ENGINE POWER IS REDUCED. I WAS DRIVING ABOUT 45 MILES PER HOUR ON AN OPEN ROAD WHEN ALL OF A SUDDEN THE ENGINE STARTED RUNNING VERY ROUGHLY AND SLOWED DOWN AND THE ABOVE 3 MESSAGES REPEATEDLY DISPLAYED ONE AFTER THE OTHER. ALSO 2 YELLOW LIGHTS WERE FLASHING AND THEN REMAINED ON -- THE CHECK ENGINE LIGHT AND THE TRACTION CONTROL LIGHT (I THINK). WHEN I REPORTED THIS PROBLEM TO THE CHEV DEALERSHIP A YEAR AGO, I WAS TOLD THAT BECAUSE THE WARNING LIGHTS AND MESSAGES COULD NOT BE REPRODUCED IN THE SERVICE DEPARTMENT, THERE WAS NOTHING THAT THEY COULD DO. (AND I UNDERSTAND THAT IF IT ISN'T BROKEN WHEN I TAKE IT IN, THE SERVICE DEPT WOULD MOST CHALLENGED TO FIX IT.) TODAY, WHEN THIS HAPPENED I WAS ABLE TO GET THE CAR TO A SAFE PLACE TO PARK. I TURNED OFF THE IGNITION, WAITED A MOMENT AND THEN RESTARTED THE CAR. THE SAME 3 MESSAGES WERE DISPLAYED WITH THE TWO YELLOW LIGHTS STAYING ON. WHEN I RESTARTED THE CAR 3 OR 4 HOURS LATER, ONLY THE CHECK ENGINE LIGHT IS DISPLAYED. THE 3 REFERENCED ALERTS WERE NOT DISPLAYED. I AM GETTING READY TO TAKE THE CAR TO THE DEALERSHIP AGAIN WITH THIS PROBLEM. DO YOU HAVE ANY ADVICE AS TO HOW TO PROCEED?

NHTSA ODI 11063959

WHEN TAKING LEFT TURNS THE CAR MAKES A LOUD GRIND NOISE THEN THE STABILITY CONTROLL WILL TURN ON. NOW THE CHECK ENGINE LIGHT AND STABILITY CONTROLL LIGHT POPPED ON WHILE DRIVING WHILE ALSO HAVING ENGINE POWER REDUCED WHICH THEN APPLIED MY BRAKES CAUSING ME TO ALMOST GO OFF THE ROAD.

NHTSA ODI 11056328

I HAVE BEEN EXPERIENCING A REDUCED POWER READING IN MY CAR. IT COMES AND GOES AT WILL ALONG WITH A STABLITRACK WARNING. I HAVE REPLACED BOTH FRONT WHEEL HUBS AND THE POSITION SENSOR TO NO AVAIL. THIS CAN HAPPEN DRIVING OR JUST GOING FROM THE BRAKE TO THE GAS.

NHTSA ODI 11043646

IT WAS DRIVING ON MY WAY BACK HOME. THEN THE ENGINE LIGHT CAME ON THE DASH SAID REDUCING ENGINE POWER BUT THEN THE TRACTION CONTROL LIGHT CAME ON AND AND THE ABS LIGHT CAME ON SO WHEN I GOT HOME I PARK THE CAR AND LEFT IT ALONE THAT DAY..THE NEXT DAY I TURN THE CAR ON AND THE ABS LIGHT IS ON AND THE TRACTION CONTROLL LIGHT IS ON I DRIVE THE CAR IT FEELS LIKE IF THE BRAKES ARE ON I HEAR A NOISE OUTSIDE THE CAR SO I TAKE IT TO A NEAR SHOP AND THEY TELL ME ITS A BAD WHEEL ROUTER SO I CHAGE IT FOR 180 AND IT WASNT THAT SO I SEE ALOT OF IMPALAS DEALING WITH THE SAME PROBLEMS

NHTSA ODI 11039966

TRACTION CONTROL LIGHT, STABILITRAC LIGHT, AND ENGINE LIGHT ALL CAME ON WHILE DRIVING DOWN HIGHWAY. THIS CAUSED THE CAR TO START JERKING AND SHIFTING HARD, ALSO ENGINE RUNNING LIKE IT HAS A MISFIRE NOW. BEFORE THIS BEGAN THE CAR WAS RUNNING AND SHIFTING PERFECT.

NHTSA ODI 11033299

JUNE 8 2013: WHEN DRIVING, NOTICED ON THE FREEWAY, IT WASN'T SMOOTH AT TIMES. THE TRANSMISSION'S SHIFTING WAS PRETTY ROUGH. NO INDICATION OF ANY ISSUES POPPED UP ON DASHBOARD. WHEN ARRIVING AT FREEWAY RAMP, IT FELT LIKE I WAS HYDROPLANING, BUT ON GRAVEL. THEN, NOTICED WHEN PRESSING THE ACCELERATOR, WAS NOT GOING ANYWHERE, BUT FELT LIKE I WAS IN NEUTRAL. WAS ABLE TO PULL IN AND TAKE A LOOK... TRANSMISSION FLUID WAS FINE... NOTHING POPPED UP ON THE DASHBOARD. NOTHING! THE INDICATORS FOR TIRES, OIL, ETC WERE SHOWING INFO, BUT NOTHING TO INDICATE IT HAD DIED!! DROPPED IT OFF AT THE DEALERSHIP - HAD JUST BOUGHT IT IN JULY 2012. 11 MONTHS LATER, THIS?!?!? THEY ARE SAYING THEY HAVE NEVER SEEN IT THIS BAD, EVEN WHEN COMPARED TO OTHER OLLLLLLDER CARS, THIS WAS THE WORST. THEY HAVE TO REPLACE THE ENTIRE TRANSMISSION. THEY CALLED IN THE GM PEOPLE TO TAKE A LOOK AT IT.THEIR AUTO TRANS CONCERN: CUSTOMER STATES TOWED IN TRANSMISSION WILL NOT MOVE AT TIME OF WRITE UP REVERSE AND FORWARD WORKING INPUT AND REACTION CARRIER EXCESSIVE CLEARANCE METAL IN TORQUE CONVERTER., VALVE BODY, BURNT CLUTCHES CALL TAC CASE #71-1194752825 PRIVE COMP ADVISED TO REPLACE TRANS DUE TO COST WITH SRTA. ORD SERIAL #619ASBWJR6J PRELACW TIH SRTA FLUSH CODE 693FFEE5 THEY REPLACED IT UNDER WARRANTY... TOTAL COST WAS $4400 AUG. 29, 2017. THE REPLACED TRANSMISSION FAILED. WE WERE ON THE FREEWAY, JUST GOT OFF, WHILE IN MOTION, THERE WAS SOME REALLY ROUGH VIBRATION. COULD NOT GO ANY FASTER THAN 25 MPH. NO LIGHT INDICATIONS ON THE DASHBOARD. IT TELLS ME IF FLAT TIRE, BLINKER IS ON, THE TEMPERATURE OUTSIDE, ETC ETC, BUT NOTHING WRONG WITH THE TRANSMISSION. I'M NOT SURE IF IT'S RELATED, BUT WE SMELLED VINEGAR EVERY TIME WE STARTED THE CAR FOR ABOUT 4 DAYS STRAIGHT. WE NOTICED THAT WHEN ACCELERATING, IT'S OKAY, BUT WHEN LETTING OFF THE GAS ON THE FREEWAY, IT "SHUDDERS."

NHTSA ODI 11020489

TAKATA RECALL MY STABILA TRACT AND REDUCED POWER TRACTION CONTROL KEEPS COMING UP ON MY DASHBOARD IT STARTS JERKING AND NO POWER. EVERY TIME I START MY CAR THESE LIGHTS COME ON AND THE CAR WILL NOT PICK UP SPEED IT HAPPENED ON THE FREEWAY IT COULD HAVE CAUSED AN ACCIDENT.

NHTSA ODI 11015143

TL* THE CONTACT OWNS A 2011 CHEVROLET IMPALA. WHILE DRIVING 45 MPH, THE TRACTION CONTROL, SERVICE STABILITY, CHECK ENGINE, AND ENGINE POWER INDICATORS ILLUMINATED. THE VEHICLE JERKED AND THE CONTACT DECELERATED THE VEHICLE TO 10 MPH; HOWEVER, THE SPEEDOMETER INDICATED 40 MPH. THE VEHICLE WAS NOT TAKEN TO THE DEALER. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS CONTACTED, BUT THERE WAS NO ANSWER. THE APPROXIMATE FAILURE MILEAGE WAS 94,000. THE VIN WAS NOT AVAILABLE.

NHTSA ODI 11011612

CHECK DRIVER SIDE AIR BAG LIGHT. DEALER INSPECTION RESULTED IN "BAD SENSOR". WANTED $400. TO REPLACE. CURRENT ISSUE: AWAY FROM HOME. CAR STARTED BUT ENGINE VERY ROUGH. CHECK ENGINE LIGHT, MESSAGE "LOSS OF POWER", CHECK STABIL-TRACK". CAR WOULD SHIFT INTO DRIVE AFTER REVVING UP TO 3K RPM. MAX SPEED ATTAINABLE 55 MPH. MADE IT HOME. NOW UNABLE TO START CAR. (NEW BATTERY) OTHERS WITH SIMILAR PROBLEMS HAD TO REPLACE/CLEAN THROTTLE CONTROL SENSOR?? SOME WERE AT HIGHER SPEED WHEN THE LOSS OF POWER OCCURRED. NO START IS ANOTHER ISSUE?

NHTSA ODI 11005839

WHILE DRIVING ON THE EXPRESSWAY AT ABOUT 65MPH MY CAR SUDDENLY ALERTED "SERVICE STABILTRAK, SERVICE TRACTION CONTROL, ENGINE POWER REDUCED" AND I WAS NOT ABLE TO UTILIZE CRUISE CONTROL ANYMORE AND IT STARTED TO SLOW DOWN TO APPROXIMATELY 40MPH. THEN MY VEHICLE STARTED TO JERKILY MOVE & THEN IT ALERTED "STARTER DISABLED SERVICE THROTTLE" AND MY CAR SHUT DOWN (STEERING ALTERED & CAR SHUT OFF). I WAS ABLE TO MANEUVER TO THE SIDE OF THE ROAD & TRIED TO RESTART MY CAR (UNSUCCESSFULLY FOR APPROXIMATELY 10 MINUTES). DID I MENTION I HAD MY 2 CHILDREN IN THE CAR WITH ME WHEN THIS HAPPENED? THIS WAS TERRIFYING AS MY CAR JUST STOPPED-I HAD MINIMAL WARNING & WHEN TRAVELING ON THE INTERSTATE IT COULD'VE BEEN A LOT WORSE. AFTER READING HOW FREQUENTLY THIS HAPPENS, WHY HASN'T IT BEEN RECALLED?

NHTSA ODI 10993052

I WAS IN MOTION WHEN MY CAR NOTIFIED ME OF ENGINE REDUCE POWER AND MY CHECK ENGINE LIGHT CAME ON ALONG WITH MY TRACTION LIGHT. I RECEIVED A LETTER IN NOVEMBER OF 2015 ABOUT THIS AND TO NOTIFY THE DEALERSHIP OF THIS WHEN IT HAPPENS. I NOTIFIED THE DEALERSHIP ABOUT THIS AND THEY KEPT MY CAR FOR 2 DAYS TO FIND AN EXCUSE NOT TO TAKE CARE OF THE PROBLEM DESCRIBED IN THE LETTER. I WAS TOLD THAT THEY WOULD LOOSE $1200 IF THEY FIXED THE ISSUE DESCRIBED IN THE LETTER. I GUESS MY SAFETY AND LOYALTY AS A CUSTOMER MEANS NOTHING. THIS HAPPENED ON OR AROUND 4/04/2017

NHTSA ODI 10992969

I HEAR A HORRIBLE GRIND WHEN MAKING A LEFT HAND TURN AFTER A STOP, CAR ALSO FELT LIKE IT DID NOT WANT TO GO FORWARD CAUSING HESITATION IN LEFT HAND TURN - VERY DANGEROUS WITH ONCOMING TRAFFIC. HAVE HAD IT TO MECHANIC MANY TIMES, EITHER THEY COULDNT FIND THE PROBLEM OR WOULD FIX THIS OR THAT AND THEN PROBLEMS RIGHT BACK WITHIN DAYS IF NOT HOURS. OCCASIONALLY GET SERVICE STABILITRAC AND/OR ABS LIGHTS, USUALLY LIGHTS WOULD CLEAR BY NEXT DAY WHEN I TOOK TO MECHANIC AND AGAIN THEY'D EITHER FIND NO PROBLEM OR TRY A FIX -STILL A PROBLEM. I BELIEVE THEY'RE GOING TO TRY TO REPLACE WHEEL BEARING NEXT BUT FROM ALL FORUMS I'VE READ THIS DOESN'T SEEM TO HELP PEOPLE EITHER, PROBLEM COMES RIGHT BACK, RECENTLY RACK AND PINION HAD TO BE REPLACED COSTING $700 TO FIX, WITHIN 2 DAYS I HEARD THE GRIND, HAD HESITATION ON A LEFT HAND TURN, NOTICED FLUID UNDER MY VEHICLE UPON RETURN HOME, HOPED IT WAS A/C CONDENSATION, WITHIN DAYS THE POWER STEERING IS GOING OUT AGAIN - TURNS OUT NEW RACK AND PINION IS LEAKING AND CAR IS COMPLETELY OUT IF POWER STEERING FLUID AGAIN AFTER 2 WEEKS. I CAN'T HELP BUT WONDER IF THE SOUND AND GRIND ISN'T WHAT'S CAUSING MY RACK AND PINION ISSUES AS WELL? HAVE OWNED 2 YEARS NOW WITH THIS PROBLEM CONTINUOUSLY THROUGHOUT OWNERSHIP OF THE VEHICLE. APPROX. 68K MILES ON IT WHEN PURCHASED NOW ALMOST 90K HAVE TO BE VERY CAUTIOUS MAKING LEFT HAND TURNS THAT THERE IS NO ONCOMING TRAFFIC AS HESITATION MAY CAUSE YOU TO GET HIT IF VEHICLE CAN'T TURN IN TIME. HAVE TO COMPLETELY LET OFF GAS AND TRY AGAIN SOMETIMES STILL GRINDS IF SO REPEAT IS ALL YOU CAN DO. BECOMING VERY SCARY AND COSTLY WITH NO FIX FOUND SO FAR!!! PLEASE INVESTIGATE! MULTIPLE POSTS REGARDING SAME ISSUE SOME ON NEWER MODELS, VERY MUCH A SAFETY ISSUE I CAN'T EVEN TEACH MY CHILD TO DRIVE IN THE CAR AS I AM AFRAID FOR THEIR SAFETY IN IT, AS WELL AS MY OWN SAFETY EVER TIME I TRY TO MAKE A LEFT HAND TURN.

NHTSA ODI 10991309

WHEN DRIVING MY CAR ON THE FREEWAY, STABIL TRAC COMES ON, AND IT SAYS ENGINE POWER REDUCED. THIS CAUSING ME TO DRIVE IN THE SLOW LANE. THE LAST TIME THIS HAPPENED THE CAR SHUT OFF ON ME WHILE ON THE FREEWAY. MY FAMILY AND I WERE ALMOST STRUCK FROM BEHIND. WE'VE HAD THIS ISSUE BEFORE, AND WE GOT IT FIXED. I TOOK IT TO THE DEALERSHIP LAST WEEK, AND THEY WERE UNABLE TO GET ANY CODES. BASICALLY WHEN THIS HAPPENS THE CHECK ENGINE LIGHT WILL COME ON, AND IT'LL BE GONE THE NEXT DAY. THIS IS A SCARY SITUATION FOR ME BECAUSE I HAVE TO TRAVEL EVERY OTHER WEEKEND, AND I DON'T NEED THIS HAPPENING TO MY FAMILY AGAIN. I DON'T THINK WE SHOULD HAVE TO KEEP PAYING FOR THE SAME PROBLEM OVER AND OVER.

NHTSA ODI 10990686

I CONTINUE TO HAVE PROBLEMS WITH MY FRONT LEFT HUB AFTER REPLACING. I HAVE REPLACED THE WIRING HARNESS AS WELL. WONDERED IF THERE ARE SERVICE BULLETINS WITH THIS SAME ISSUE. WHILE DRIVING THE CAR IT MAKES A HORRIBLE GRINDING NOISE DESCRIBED TO ME AS THE HUB ADJUSTING THE SPEED OF ONE TIRE TO MATCH THE OTHER. IT ALSO FLASHES BRAKE ASSIST AND STABILITRACK ISSUES AS WELL AS ANTI LOCK ALERT. THIS HAPPENS MOSTLY TURNING LEFT BUT MOST RECENTLY EVEN WHILE DRIVING STRAIGHT DOWN THE ROAD.

NHTSA ODI 10983097

WHEN DRIVING IN REGULAR TRAFFIC,THE WARNING SYSTEM SIGNALS, AND A MESSAGE "SERVICE STABILITRAK SYSTEM, BRAKE LIGHT." THERE IS NO REDUCED POWER, NOR CHECK ENGINE LIGHT. I HAD SERVICE FOR THIS PROBLEM 2 YEARS AGO, NOW ITS BACK! ONSTAR SHOWS SYSTEM "NORMAL, NO ISSUES." WHAT'S GOING ON???

NHTSA ODI 10967984

ENGINE SHUT DOWN ON THE HIGHWAY, COASTED TO STOP ON SHOULDER. ENGINE WOULD NOT RESTART. WAITED 5 MINUTES THEN ENGINE RESTARTED ERROR MESSAGE DISPLAYED BEFORE ENGINE STOPPED RUNNING: SHUTTING DOWN THROTTLE

NHTSA ODI 10957506