NHTSA owner reports · September 18, 2026 snapshot.
Vehicle Speed Control complaints
69 reportsClear category filter40,000 miles · Mar 28, 2014
EngineVehicle Speed Control
TL* THE CONTACT OWNS A 2011 CHEVROLET IMPALA. THE CONTACT STATED WHILE TRAVELING VARIOUS SPEEDS, THE CHECK ENGINE LIGHT ILLUMINATED AND THE VEHICLE LOST ACCELERATION POWER. THE VEHICLE WAS TAKEN TO THE DEALER WHO STATED THAT THE SPEED SENSOR FAILED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE…
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TL* THE CONTACT OWNS A 2011 CHEVROLET IMPALA. THE CONTACT STATED WHILE TRAVELING VARIOUS SPEEDS, THE CHECK ENGINE LIGHT ILLUMINATED AND THE VEHICLE LOST ACCELERATION POWER. THE VEHICLE WAS TAKEN TO THE DEALER WHO STATED THAT THE SPEED SENSOR FAILED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 40,000. THE VIN WAS UNAVAILABLE.
NHTSA ODI #10575321
65,000 miles · Mar 19, 2014
Engine And Engine CoolingVehicle Speed Control
I WAS DRIVING MY CAR AND IT BEGAN TO SHAKE AND LOSE POWER AND WOULD NOT ACCELERATE. THE CHECK ENGINE LIGHT CAME ON WITH MESSAGES REDUCED ENGINE POWER, SERVICE STABILTRAK. THIS HAS BEEN HAPPENING QUITE A BIT WITH THIS CAR. I HAVE BEEN RESEARCHING ONLINE AND HAVE NOTICED THAT NUMEROUS COMPLAINTS HAVE BEEN FILED GOING BACK YEARS…
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I WAS DRIVING MY CAR AND IT BEGAN TO SHAKE AND LOSE POWER AND WOULD NOT ACCELERATE. THE CHECK ENGINE LIGHT CAME ON WITH MESSAGES REDUCED ENGINE POWER, SERVICE STABILTRAK. THIS HAS BEEN HAPPENING QUITE A BIT WITH THIS CAR. I HAVE BEEN RESEARCHING ONLINE AND HAVE NOTICED THAT NUMEROUS COMPLAINTS HAVE BEEN FILED GOING BACK YEARS. GM SHOULD TAKE CARE OF THIS PROBLEM AS IT IS HAPPENING WITH NUMEROUS VEHICLES. I DRIVE ON THE INTERSTATE EVERY DAY AND IF THIS HAPPENS THERE I HOPE IT DOESN'T CAUSE AN ACCIDENT. *TR
NHTSA ODI #10573566
49,200 miles · Mar 4, 2014
Electronic Stability Control (esc)EngineVehicle Speed Control
I WAS DRIVING ON I70 GOING 70 MPH AND OUT OF NOWHERE MY ENGINE LIGHT COMES ON AND 3 MESSAGES START APPEARING ON THE DASH. 1) SERVICE STABILTRAC, 2) SERVICE TRACTION CONTROL, 3( ENGINE POWER REDUCING. MY CAR A 2011 CHEVY IMPALA SLOWS DOWN TO ABOUT 50. I GET IT GOING BACK TO 60 BUT NOT VERY EASILY. I KEEP GOING AND MERGE ONTO 4…
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I WAS DRIVING ON I70 GOING 70 MPH AND OUT OF NOWHERE MY ENGINE LIGHT COMES ON AND 3 MESSAGES START APPEARING ON THE DASH. 1) SERVICE STABILTRAC, 2) SERVICE TRACTION CONTROL, 3( ENGINE POWER REDUCING. MY CAR A 2011 CHEVY IMPALA SLOWS DOWN TO ABOUT 50. I GET IT GOING BACK TO 60 BUT NOT VERY EASILY. I KEEP GOING AND MERGE ONTO 465 (INDIANAPOLIS INDIANA AREA). I COME INTO SLOWER TRAFFIC WHERE I NEED TO STOP. I APPLY MY BREAKS AND THE PEDAL WILL NOT ENGAGE. ALMOST HIT A CAR. ALSO WHEN I SLOWED DOWN THE CAR STARTED SHAKING BAD. I CONTINUE A LITTLE FARTHER IN SLOW TRAFFIC AND HAD TO STOP AGAIN, SAME THING WITH THE BREAKS. SO I PULLED OVER AND SHUT OFF MY CAR ON THE SIDE OF I465. MY DAUGHTER HAD LOOKED UP THE ERROR MESSAGES ON THE INTERNET AND THERE SEEM TO BE A LOT ON THERE WITH THE SAME PROBLEM. THEY ALL SAID THE SAME THING, AFTER SHUTTING THE CAR OFF AND RESTARTING IT IT WAS FINE. I MADE IT HOME AND EVERYTHING SEEMED FINE FOR A COUPLE OF WEEKS AND IT HAPPENED A FEW MORE TIMES SO FAR. ONCE AT A STOP SIGN AND THE SAME DAY AS I WAS BACKING OUT OF PARKING SPACE AT WORK. ONCE AGAIN THAT SAME WEEK I WAS DRIVING IN TOWN AND TOOK OFF FROM A RED LIGHT AND IT HAPPENED AGAIN. FROM A COMPLETE STOP THE CAR STARTED SHAKING AND THE ERROR MESSAGES AND ENGINE LIGHT COME ON AND IT WOULD NOT ACCELERATE. I WOULD HAVE THOUGHT NOTHING ABOUT IT EXCEPT TO GET IT FIXED, BUT AFTER READING SO MUCH ON THE INTERNET ABOUT THE SAME PROBLEM THERE HAS TO BE AN ISSUE AND NEEDS TO BE RECALLED. GM NEEDS TO OWN UP TO THIS PROBLEM BEFORE PEOPLE GET INJURED OR WORSE DIE FROM THIS ISSUE. *TR
NHTSA ODI #10567053
64,436 miles · Mar 4, 2014
Electronic Stability Control (esc)EngineVehicle Speed Control
AS I WAS DRIVING DOWN THE ROAD MY CAR LOST SPEED DROP FROM 35 MPH TO 20 MPH, THE CHECK ENGINE LIGHT CAME ON AND THE TRIANGLE WITH THE CAR AND SKID MARKS THEN IT KEPT FLASHING THE SERVICE STABILITRAK CONTROL, ENGINE POWER REDUCED, AND SERVICE TRACTION CONTROL AND IT STARTED TO JERK AND JUMP. I HAVE BEEN HAVING MAJOR ISSUES OUT O…
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AS I WAS DRIVING DOWN THE ROAD MY CAR LOST SPEED DROP FROM 35 MPH TO 20 MPH, THE CHECK ENGINE LIGHT CAME ON AND THE TRIANGLE WITH THE CAR AND SKID MARKS THEN IT KEPT FLASHING THE SERVICE STABILITRAK CONTROL, ENGINE POWER REDUCED, AND SERVICE TRACTION CONTROL AND IT STARTED TO JERK AND JUMP. I HAVE BEEN HAVING MAJOR ISSUES OUT OF THIS CAR FIRST IT WAS THE RIGHT HUB (EATING TIRES), THEN THE LEFT HUB (EATING MORE TIRES), THEN THE TRANSMISSION AND GEAR SHIFT COMPLETELY GONE (REPLACED EVERYTHING) NOW THIS PLUS THE FRONT TIRES ARE STILL GETTING ATE UP. THIS IS AN ONGOING PROBLEM WITH THIS CHEVY IMPALA. I AM SO READY TO GET A HONDA. AS I SEE THERE ARE OTHER OWNERS THAT ARE HAVING SIMILAR PROBLEMS. WHY ISN'T IT A RECALL ON THESE PROBLEMS? NOBODY LIKES TOO LOOSE THEIR MONEY FOR SOMETHING THAT SHOULD HAVE BEEN TAKEN CARE OF BY GM IN THE FIRST PLACE. WHAT WILL GM DO IF ALL CUSTOMERS PROTEST ABOUT THESE ISSUES THAT SHOULD BE RECALLED ON WHETHER ITS FOR THE PUBLIC, PRIVATE, OR GOVERNMENT SECTOR? *TR
NHTSA ODI #10566946
46,157 miles · Feb 2, 2014
Electronic Stability Control (esc)Fuel/propulsion SystemVehicle Speed Control
THE CHECK ENGINE LIGHT CAME ON (AND HAD GONE OUT) PREVIOUSLY. DASH SAID "SERVICE STABILITRAC, ENGINE POWER REDUCED" AND A MECHANIC SAID IT WAS A "SENSOR IN THE GAS PEDAL" AND THAT IF IT KEPT HAPPENING WE SHOULD REPLACE IT. I DIDN'T FULLY REALIZE THAT THIS MEANT THAT THE THROTTLE WOULD DISABLE ITSELF WHILE I WAS DRIVING IN MORN…
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THE CHECK ENGINE LIGHT CAME ON (AND HAD GONE OUT) PREVIOUSLY. DASH SAID "SERVICE STABILITRAC, ENGINE POWER REDUCED" AND A MECHANIC SAID IT WAS A "SENSOR IN THE GAS PEDAL" AND THAT IF IT KEPT HAPPENING WE SHOULD REPLACE IT. I DIDN'T FULLY REALIZE THAT THIS MEANT THAT THE THROTTLE WOULD DISABLE ITSELF WHILE I WAS DRIVING IN MORNING RUSH HOUR TRAFFIC ON THE HIGHWAY IN THE LEFT HAND LANE GOING UP A HILL DOING 60 MPH. THERE WAS TRAFFIC BEHIND ME AND IN OTHER LANE SO I HAD TO PULL INTO THE CENTER SHOULDER OVERTOP OF 5 INCHES OF SNOW AND ICE. IT WAS A STRUGGLE NOT TO HIT THE GUARDRAIL. THERE WAS BARELY ENOUGH ROOM. I JUST MADE IT OVER THE YELLOW LINE. IT WAS 20 DEGREES AND THEN HAD TO WAIT AN HOUR FOR A TOW TRUCK. THE CAR DID START AND DRIVE AT THE GARAGE. THIS MECHANIC REPLACED THE ACCELERATION PEDAL ASSEMBLY. THE ERROR WAS CODE P2122. HE ALSO STATED THAT HE COULD SMELL BURNING WIRES. I HAD SMELLED IT BUT DIDN'T REALIZE WHAT IT WAS. *TR
NHTSA ODI #10562593
67,460 miles · Jan 15, 2014
Electronic Stability Control (esc)Vehicle Speed Control
I WAS DRIVING DOWN THE INTERSTATE WITH THE CRUISE CONTROL ON WHEN SUDDENLY MY CAR JERKED AND A MESSAGE SHOWING "ENGINE POWER REDUCED, SERVICE STABILITRAK" SHOWED UP. I NOTICED THE RPMS JERKING UP AND DOWN WITH A PRETTY DRAMATIC RANGE. WHEN I SLOWED DOWN MY CAR STARTED SHAKING. THE WORST PART IS THAT WHEN I SHUT MY CAR OFF THE PR…
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I WAS DRIVING DOWN THE INTERSTATE WITH THE CRUISE CONTROL ON WHEN SUDDENLY MY CAR JERKED AND A MESSAGE SHOWING "ENGINE POWER REDUCED, SERVICE STABILITRAK" SHOWED UP. I NOTICED THE RPMS JERKING UP AND DOWN WITH A PRETTY DRAMATIC RANGE. WHEN I SLOWED DOWN MY CAR STARTED SHAKING. THE WORST PART IS THAT WHEN I SHUT MY CAR OFF THE PROBLEM STOPS. THIS HAS HAPPENED 4 OTHER TIMES. ONCE WHILE IDLING. ONCE WHILE SLOWING DOWN FROM 55 TO 35 AND ONCE WHILE DRIVING ABOUT 35 MPH. THERE SEEMS TO BE NO PATTERN AND IT IS INTERMITTENT. *TR
NHTSA ODI #10560116
39,421 miles · Nov 10, 2013
Electrical SystemExterior LightingVehicle Speed Control
DRIVING AND THE CAR SHUT OFF COMPLETELY. *TR
NHTSA ODI #10551671
56,000 miles · Aug 4, 2013
Power TrainTraction Control SystemVehicle Speed Control
WHILE TRAVELLING ON THE HIGHWAY, IN THE RAIN, THE POWER TO THE ENGINE SUDDENLY AND DRASTICALLY SLOWED DOWN. THE WARNINGS SHOWED UP ON THE SCREEN" STABILITRAK, TRACTION CONTROL, ENGINE POWER LOSS. *TR
NHTSA ODI #10533470
43,700 miles · Jun 25, 2013
EnginePower TrainVehicle Speed Control
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 A 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 W…
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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 A 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 OVER 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 OR IF THERE WERE ANY ENGINE ISSUES. HAD BROUGHT IT TO THE DEALERSHIP WHERE I HAD BOUGHT THE CAR 11 MONTHS AGO. THE MECHANICS WERE SAYING THAT THEY HAVE NEVER SEEN SUCH AN HUGE TRANSMISSION FAILURE BEFORE. THEY WOULD HAVE TO REPLACE THE WHOLE THING. *TR
NHTSA ODI #10521665
58,000 miles · Jun 7, 2013
Vehicle Speed Control
WE ARE LEASING A 2011 CHEVY IMPALA, AND WITH NO WARNING AFTER 3 CHIMES A MESSAGE WILL COME UP ON THE DASH STATING "SERVICE TRACTION CONTROL, ENGINE POWER REDUCED". THE VEHICLE WILL START TO SLOW DOWN AND SOMETIMES COMPLETELY SHUTS OFF WHILE DRIVING 65 MPH ON THE FREEWAY. TOOK IT TO THE DEALER AND THEY CHARGED ME $357.00 TO RE…
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WE ARE LEASING A 2011 CHEVY IMPALA, AND WITH NO WARNING AFTER 3 CHIMES A MESSAGE WILL COME UP ON THE DASH STATING "SERVICE TRACTION CONTROL, ENGINE POWER REDUCED". THE VEHICLE WILL START TO SLOW DOWN AND SOMETIMES COMPLETELY SHUTS OFF WHILE DRIVING 65 MPH ON THE FREEWAY. TOOK IT TO THE DEALER AND THEY CHARGED ME $357.00 TO REPLACE A DEFECTIVE COMPUTER CHIP IN THE GAS PEDAL. I DID SOME RESEARCH ON LINE AND THERE WERE A LOT OF CONSUMERS THAT EXPERIENCED THE SAME EXACT PROBLEM AND WHEN THEY TOOK THEIR VEHICLES INTO THE DEALER FOR REPAIR THEIR VEHICLES WERE DIAGNOSED WITH THE SAME ISSUE. I FEEL THIS IS A SAFETY PROBLEM BECAUSE NO ONE DRIVING BEHIND YOU EXPECTS YOUR VEHICLE TO SUDDENLY DRASTICALLY SLOW DOWN OR EVEN STOP WITH NO WARNING. THERE IS A POSSIBILITY THAT YOU COULD BE INJURED BY A REAR END ACCIDENT. I'M SURE BY NOW CHEVY IS AWARE OF THIS DEFECTIVE PART AND THEY SHOULD PUT OUT A RECALL TO FIX THIS PROBLEM SO THAT CONSUMERS ARE AWARE ABOUT IT AND NOT HAVE TO COME OUT OF POCKET FOR REPAIRS. *TR
NHTSA ODI #10515740