RoadVitals

2008 Chevrolet Impala Engine Problems

Owner-reported complaints naming the engine system, filed with NHTSA

Data refreshed

Engine reportsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
160
Latest May 26, 2021
Share of all reportsThis category as a share of every owner report on file for this model year. One report can name more than one component, so the categories overlap.
20%
of 810 total
Crash or fire reportedReports in this category whose submitter recorded that a crash or a fire occurred. The reporter's own answer on the NHTSA form, not a verified finding.
4
Injuries or deaths reportedTotals the submitters entered on their own reports in this category. Not verified by NHTSA and not a casualty statistic.
4

What this page shows

Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components. Every record below is an owner-reported complaint about the 2008 Chevrolet Impala submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 160 reports on file name it.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Owner reports naming engine

The 25 most recent of 160, in the owner's own words

EnginePowertrain (other)
Filed May 26, 2021

car shuts off while in traffic and it says engine power reduced service traction control

NHTSA ID
11418636
Incident
May 22, 2021
EngineSteering
Filed Mar 31, 2021

TL* THE CONTACT OWNS A 2008 CHEVROLET IMPALA. THE CONTACT STATED WHILE DRIVING 60 MPH AND DRIVING OVER A POTHOLE, THE VEHICLE LOSS MOTIVE POWER, STALLED, AND THE STEERING WHEEL BECAME DIFFICULT TO TURN. THE CONTACT WAS UNABLE TO RESTART THE VEHICLE. THE CONTACT STATED THAT THERE WAS NO WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC BUT WAS NOT DIAGNOSED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 78,000.

NHTSA ID
11405806
Incident
Mar 24, 2021
Mileage
78,000 mi
ElectricalEngine
Filed Feb 9, 2021

WHILE WIFE WAS DRIVING AT NORMAL SPEED CAR WENT INTO LIMP MODE MANY TIMES OVER LAST FEW MONTHS CAUSING ACCELERATOR PEDAL SENSOR CODES.WE HAVE SINCE CHANGED THIS PEDAL SENSOR 6 TIMES AND SAME ISSUE AND CODES POP UP. WE ALSO CHANGED THROTTLE BODY W SENSOR AND CONNECTOR PIGTAIL.I THINK THERE IS CORROSION IN ECM AND ALL THESE ITEMS HAVE FAILED. THESE ITEMS SHOULD HAVE BEEN RECALLED AS MANUFACTURER DEFECTS IN MY OPINION.WE ARE STILL HAVING PROBLEMS SAME CODES AND IM NOT THE ONLY ONE!

NHTSA ID
11395348
Incident
Sep 2, 2020
Mileage
120,000 mi
Engine
Filed Jan 29, 2021

I WAS DRIVING ON THE INTERSTATE AND THE DASH LIT UP SERVICE TRACTION SYSTEM AND ENGINE POWER REDUCED. I WAS CURRENTLY USING CRUISE CONTROL SO IT SHOCKED ME WHEN MY CAR WENT FROM 75 TO 40 QUICK. I WAS IN FIVE O'CLOCK TRAFFIC AND ALMOST REAR ENDED. CHECK ENGINE LIGHT CAME ON AS WELL. I'M PLANNING ON GETTING IT LOOKED AT.

NHTSA ID
11390726
Incident
Jan 29, 2021
Mileage
160,000 mi
Engine
Filed Oct 29, 2020

THE CAR NEEDS AND BURNS TOO MUCH OIL AND IT'S A COMMON PROBLEM THERE'S A LOT OF PEOPLE COMPLAINING ABOUT PLEASE HELP I HAVE TO CHANGE OIL EVERY 2 MONTHS AND THERE'S NO LEAKS OR ANYTHING JUST THAT IT BURNS OIL TOO QUICK

NHTSA ID
11367022
Incident
Aug 1, 2020
Engine
Filed Jul 5, 2020

THIS COOLANT CROSSOVER PIPE GASKET LEAK HAS BEEN A REPEATED AND MULTIPLE VEHICLE PROBLEM WITH THE 3.9L AND 3.5L AND GM ONLY CAME UP WITH 2 TECHNICAL SERVICE BULLETINS; THE LAST ONE WAS #07-06-02-006E: COOLANT LEAKING FROM ENGINE (REPLACE COOLANT CROSSOVER PIPE GASKETS) - (MAR 5, 2012). HOWEVER, THE NEW GASKET DESIGN PRESUMABLY REPAIRED THE LEAK. HOWEVER, IT DID NOT. I HAVE SEEN THIS ISSUE DISCUSSED ON SEVERAL WEB SITES WITH ALL COMPLAINING ABOUT THE SAME UNRESOLVED ISSUE. MY 2008 IMPALA WITH THE 3.9L V-6 HAS BEEN REPAIRED FOR THIS ISSUE ON THE FOLLOWING DATES, EACH TIME I WAS ASSURED IT WAS SATISFACTORILY REPAIRED: 02/09/2019 ' DIY DUE TO DEALERSHIP COST. REPAIRED PER GM TSB/GM TECHNICAL SERVICE MANUAL. 11/30/2016 ' DEALERSHIP. 03/10/2014 ' DEALERSHIP. 01/11/2013 ' DEALERSHIP. AND NOW, IT'S LEAKING AGAIN! I CHATTED WITH CHEVROLET ONLINE ON 10 APR 2020 AND CECIL SAID THAT WARRANTY HAD REPAIRED IT ONCE, BUT THE ISSUE HAS BEEN AND STILL CONTINUES. GM WOULD NO LONGER REPAIR THE LEAK. THIS IS WHAT I WAS TOLD: CECIL AT 15:40, APR 10, 2020: UNFORTUNATELY, ONCE THE DECISION IS FINAL THAT IT CANNOT BE CHANGED ANYMORE. BUT HERE IS WHAT WE SUGGEST, YOU CAN TAKE THE VEHICLE TO A CERTIFIED GM DEALERSHIP ABOUT THIS TO HAVE IT DIAGNOSED AND IT MIGHT THE SAME SYMPTOM BUT DIFFERENT ROOT CAUSE. WE CANNOT PERFORM DIAGNOSIS OVER CHAT. CECIL AT 15:41, APR 10: AND FOR ASSISTANCE, I HIGHLY SUGGEST THAT YOU SPEAK WITH THE CUSTOMER EXPERIENCE MANAGER OR CEM AT THE DEALERSHIP. HOWEVER, THE DEALERSHIP IS THE ONE WHO TOLD ME THAT IT COULD NO LONGER BE COVERED UNDER WARRANTY! THIS ISSUE IS SOMETHING GM SHOULD HAVE LONG RESOLVED WITH A BETTER SOLUTION. THIS LEAK IS A CONTINUAL PROBLEM AND GM DOESN'T OFFER ANY BETTER REPAIR OPTIONS AND WILL NOT REPAIR THE LEAK AGAIN.

NHTSA ID
11337503
Incident
Apr 1, 2020
Mileage
104,000 mi
Driver assistanceEngine
Filed May 22, 2020

RANDOMLY I RECEIVE THE MESSAGE "SERVICE TRACTION CONTROL - ENGINE POWER REDUCED" - THERE IS NO RHYME OR REASON. IT HAPPENS ON NICE DAYS, RAINY DAYS, WHETHER OR NOT I AM GOING UPHILL, DOWNHILL OR ON FLAT SURFACES. ON AT LEAST ONE OCCASION WHILE DRIVING ON THE HIGHWAY, THE ENGINE SHUT OFF AND I HAD TO COAST FROM LANE 2 TO THE SHOULDER. AFTER 20 MINUTES, IT RESTARTED. *TR

NHTSA ID
11325516
Incident
May 22, 2020
Mileage
150,000 mi
Driver assistanceEngineSteering
Filed Jan 17, 2020

THE CAR IS NOT DRIVING SMOOTH. THE CAR IS HAVING MULTIPLE PROBLEMS

NHTSA ID
11300027
Incident
Jan 10, 2020
Mileage
220,000 mi
Engine
Filed Nov 27, 2019

TL* THE CONTACT OWNS A 2008 CHEVROLET IMPALA. THE CONTACT STATED THAT THE REDUCE POWER INDICATOR ILLUMINATED AND THE VEHICLE STALLED. THE VEHICLE WAS RESTARTED AND WAS ABLE TO DRIVE NORMALLY. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE THROTTLE BODY, THROTTLE BODY SENSOR, AND FUEL PEDAL SENSOR NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED. THE VEHICLE WAS TAKEN BACK TO THE INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE MASS AIR FLOW SENSOR FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE CONTACT STATED THAT THE VEHICLE WAS TAKEN TO THE INDEPENDENT MECHANIC FIVE TIMES FOR THE SAME FAILURE. THE MECHANIC ALSO STATED THAT THE SPARK PLUGS FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE CONTINUED. THE MANUFACTURER AND DEALER WERE NOT MADE AWARE OF THE FAILURES. THE FAILURE MILEAGE WAS APPROXIMATELY 205,000. THE VIN WAS NOT AVAILABLE.

NHTSA ID
11282690
Incident
Apr 10, 2019
Mileage
205,000 mi
Driver assistanceEngine
Filed Oct 18, 2019

ON INTERSTATE DRIVING APPROX. 60 MPH SUDDENLY CHECK ENGINE LIGHT CAME ON, AND REDUCE ENGINE SPEED LIGHT ON AND CAR DROPPED DRASTICALLY DOWN TO LITERALLY NO POWER. BARELY HAD TIME TO GET ON SHOULDER WITHOUT CAUSING ACCIDENT. WENT TO LOCAL MECHANIC AND HE SAID THAT THE ISSUE WAS THE THROTTLE PEDDLE.

NHTSA ID
11269387
Incident
Oct 16, 2019
Mileage
104,000 mi
ElectricalEngineFuel system
Filed Jul 22, 2019

REDUCED ENGINE POWER LIGHT COMES ON INTERMINTENTLY WHILE DRIVING HAD THE THROTTLE BODY AND ACCELERATOR PEDAL REPLCAED TWICE AFTER I BOUGHT THE CAR WITH 75000 MILES ON IT. STILL THE REDUCED ENGINE POWER LIGHT COMES ON. JUST YESTERDAY I WAS UNABLE TO START MY CAR. THROTTLE PROBLEMS LIGHT CAME ON IN WINDOW

NHTSA ID
11233963
Incident
Jul 21, 2019
Mileage
130,000 mi
Engine
Filed Jul 2, 2019

MY CAR JUST STOPPED IN THE MIDDLE OF THE ROAD IN HEAVY TRAFFIC OF 45 MPH. WEATHER WAS ABOUT 90 DEGREES F.. MESSAGE ON DASH WAS "STARTING DISABLED SERVICE THROTTLE." I AM LUCKY NOT TO HAVE BEEN SERIOUSLY HURT OR KILLED. AFTER PUSHING IT TO A SIDE STREET, IT STARTED AGAIN AND SHOWED "REDUCED ENGINE POWER" AND WENT ABOUT 20 MPH. I SAW ONLINE THIS IS COMMON PROBLEM WITH MANY CHEVROLETS. WHY NO RECALL? SO DANGEROUS. REPAIR IS ESTIMATED AT $750.

NHTSA ID
11229037
Incident
Jun 29, 2019
Mileage
119,600 mi
Driver assistanceElectricalEngine
Filed Jul 1, 2019

TAKATA RECALL. WHEN VEHICLE IS STARTED A LOUD SCREECH HAPPEN EVERY TIME VEHICLE IS STARTED, ONCE VEHICLE IS IN MOTION ON HIGHWAY, STREET, CITY.AND IN MOTION THE VEHICLE STARTS ALARMING AND LETTIMG ME KNOW IN THE INFORMATION WIDOW CHECK TIRE MONITORING SYSTEM WITH TIRE PRESSURE LIGHT CONSISTENTLY ON THEN VEHICLE ALARMING SOUNDS AGAIN TO CHECK STABILITY TRAK AND THEN IT ALARM S AGAIN WITH THE CHECK ENGINE LIGHT THAT THE VEHICLES ENGINE POWER HAS BEEN REDUCED AND VEHICLE IS NO LONGER ABLE TO PICK UP SPEED RIGHT AWAY THIS HAS BEEN GOING ON SENSE I PURCHASED IT. ALSO WHEN IM MAKING TURNS THE VEHICLE WILL ALARM ABOUT HAVING STABILITY TRAK SERVICED

NHTSA ID
11228773
Incident
Oct 18, 2018
Mileage
120,000 mi
Driver assistanceEngine
Filed May 14, 2019

DRIVING ON HIGHWAY @ 60 MPH WHEN ENGINE DIES WITH NO WARNING. DASH SHOWS FOLLOWING MESSAGES: "ENGINE POWER REDUCED" "SERIVCE TRACTION CONTROL" "SERVICE STABILITRAX" POWER STEERING AND POWER BRAKES STOP WORKING. WHEN CAR KEY IS TURNED OFF AND CHECK ENGINE CODES ARE CLEARED, THE CAR STARTS UP FINE AND CONTINUES TO RUN SMOOTHLY. LUCKILY I WAS ABLE TO SAFELY STOP THE CAR (ALBEIT ON THE MIDDLE OF A MAJOR HIGHWAY), TURN IT OFF, CLEAR THE CODES, AND START IT BACK UP TO GET OUT OF THE WAY. SAME PROBLEM HAPPENED IN JANUARY 2018. AFTER THIS I TOOK IT TO A CHEVY DEALER. THEY SAID CAR WAS COVERED UNDER "WARRANTY" FOR THIS PROBLEM AND THEY REPLACED THE THROTTLE BODY. ONE MONTH LATER SAME PROBLEM KEEPS OCCURRING. CAR RUNS FINE BUT THESE MESSAGES APPEAR ABOUT ONCE A MONTH. TYPICALLY THE ENGINE STAYS ON AND IS ONLY LIMITED IN POWER. HOWEVER, OCCASIONALLY THE CAR WILL DIE COMPLETELY WITHOUT WARNING, EVEN ON THE HIGHWAY. HAD CAR BROUGHT TO CHEVY DEALER. THEY SAID THEY CAN NOT FIX THE PROBLEM UNLESS IT IS CURRENTLY OCCURRING WITH THE CAR. THEY RECOMMENDED I TAKE THE CAR AND BRING IT BACK TO THEM WHEN THE PROBLEM HAPPENS AGAIN. HOWEVER, I DO NOT FEEL SAFE DRIVING THIS CAR KNOWING THE ENGINE COULD JUST SHUT DOWN AT ANY MOMENT AND THE CHEVY SPECIALIST THEMSELVES DO NOT SEEM TO EVEN HAVE A CLUE ABOUT WHAT COULD BE CAUSING THIS.

NHTSA ID
11207418
Incident
May 4, 2019
Mileage
110 mi
EngineSuspension
Filed Apr 16, 2019

ONE DAY I WAS DRIVING MY CAR HOME MAKING A RIGHT TURN AND MY ENGINE STARTED MAKING NOISE AND WAS ACTING AS IF IT WAS GOING TO CUT OFF. SO I PARKED MY CAR CALLED MY MECHANIC HE CAME OVER AND LOOKED AT THE CAR I SAID IT COULD BE A POSSIBLE ROCKER ARM THAT HAS GONE IN THE CAR OR I COULD HAVE SOMETHING TO DO WITH THE CHECK ENGINE LIGHT COMING ON GIVING ME A CODE FOR A CAM POSITIONING SENSOR / SOLENOID. ALSO WHEN I PURCHASE THE CAR NOT TOO LONG AFTER ME DRIVING I NOTICED THERE WAS SOME NOISE COMING FROM MY BACK TIRES. I COULDN'T FIGURE IT OUT FOR A WHILE UNTIL ONE DAY I LOOKED AT MY TIRES AND NOTICED THAT ON THE INSIDE THERE WAS A CONSIDERABLE AMOUNT OF SCRAPING GOING ON WEARING AWAY MY TREAD. IT WOULD ALWAYS SEEM TO HAPPEN WHEN I GOT NEW TIRES ON THE CAR SO I THOUGHT MAYBE THE TIRES WERE TOO BIG FOR THE CAR BUT I ORDERED WHAT THE MANUFACTOR SUGGESTED THE TIRE SIZE SHOULD BE FOR THE CAR. SO I HAD A TIRE SPECIALIST LOOK AT IT AND AN ALIGNMENT SPECIALIST LOOK AT IT AND THEY TOLD ME THAT THE SUSPENSION SPRINGS MAY BE CAUSING MY ISSUE. THEY SAID THAT I SHOULD NOT HAVE TO CHANGE THE SIZE OF MY TIRE FOR THEM TO FIT BECAUSE THE MANUFACTURER SPECIFICATIONS ARE CORRECT AND THE TIRES WERE THE RIGHT SIZE FOR THE CAR.

NHTSA ID
11196753
Incident
Mar 1, 2019
Mileage
220,200 mi
EnginePowertrain (other)
Filed Mar 27, 2019
Crash reported2 injuries reported

TL* THE CONTACT OWNS A 2008 CHEVROLET IMPALA. WHILE ATTEMPTING TO ACCELERATE, THE VEHICLE HESITATED AND JERKED FORWARD. THE CONTACT TOOK THE VEHICLE TO GREGG YOUNG CHEVROLET (17750 BURT ST, OMAHA, NE 68118, (402) 509-3028) TWICE, BUT THEY WERE UNABLE TO DIAGNOSE THE FAILURE. ON ONE OCCASION, THE CONTACT'S VEHICLE LURCHED FORWARD AND CRASHED INTO ANOTHER VEHICLE THAT TURNED IN FRONT OF THE CONTACT. THE CRASH WAS A T-BONE COLLISION. A POLICE REPORT WAS FILED. THE CONTACT AND OTHER DRIVER WERE INJURED AND TRANSPORTED TO THE HOSPITAL FOR MEDICAL ATTENTION. THE VEHICLE WAS TOWED TO HUBER CADILLAC (11102 W DODGE RD, OMAHA, NE 68154, (402) 496-5400), BUT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO REPLACED THE FUEL PUMP, SPARK PLUGS, COIL, AND FUEL INJECTOR (TWICE); HOWEVER, THE FAILURE RECURRED. THE FAILURE MILEAGE WAS 85,000.

NHTSA ID
11191799
Incident
Nov 2, 2015
Mileage
85,000 mi
Driver assistanceElectricalEngine
Filed Mar 10, 2019

VERY BAD KNOCKING NOISE ALSO ELECTRICAL FIRE COULD'VE CAUGHT ON FIRE

NHTSA ID
11185714
Incident
Feb 28, 2019
Engine
Filed Jan 31, 2019

LIGHTS CAME ON DASH SERVICE THROTTLE, REDUCED ENGINE POWER. I WAS DRIVING DOWN THE HIGHWAY ON 8/16/2018 GOING 55 WHEN THE CAR STARTED TO CHATTER AND I STRUGGLED TO PULL OVER TO THE SIDE OF THE ROAD, I ALMOST WAS REAR ENDED BECAUSE IT WAS SO SUDDEN. I SHUT THE CAR OFF AND LET IT SIT FOR A BIT THEN IT STARTED AND I WENT ON. TODAY IT DID IT AND IT STILL WONT START AFTER HOURS.

NHTSA ID
11173275
Incident
Jan 31, 2019
Mileage
151,000 mi
Driver assistanceEnginePowertrain (other)
Filed Jan 29, 2019

VEHICLE HESITATES THROTTLE BODY CAUSES CAR TO JERK CUT OFF NOT PICK UP SPEED ALWAYS IDLED UP SPEED SENSOR READS 107 MPH WHEN ONLY GOING 30MPH STALLS. ALMOST WAS REAR ENDED BECAUSE CAR SHUT OFF IN THE MIDDLE OF DRIVING.I HAVE MY CAR REGULARLY SERVICED AND ALL OF A SUDDEN THIS STARTED HAPPENING. MY BLENDOOR ACULATER CAUSE MY HEAT NOT TO SOMETIMES COME ON AND IT MAKES THIS LOUD CLICKING NOISE. MOST IF NO ALL IMPALA HAVE THIS PROBLEM AND GM KNOWS ABOUT ALL THE THINGS I TOLD YOU ABOUT YET THEY DONT WANNA RECALL THE VEHICLE

NHTSA ID
11172696
Incident
Nov 12, 2017
Driver assistanceEngineSteering
Filed Jan 24, 2019

WHILE I WAS DRIVING, THE CAR GAVE A NOTICE OF REDUCED ENGINE POWER, THEN A FEW MILES LATER, ANOTHER NOTICE CAME ON SERVICE THROTTLE DISABLING SERVICE. AND THE CAR SHUT OFF! WITH NO WARNING, AND NO WAY TO GET TO SAFETY. IF I WASN'T IN AN AREA THAT HAD A SHOULDER I COULD GET TO QUICKLY OR IF THERE WAS ANY TRAFFIC NEAR ME, I WOULD BE DEAD! THIS IS INCREDIBLY UNSAFE AND IS GOING TO GET SOMEONE KILLED, IF IT HASNT ALREADY! THAT HAS TO BE SOME SORT OF FLAW IN THE PROGRAMING. IF I WOULD HAVE BEEN ON THE HIGHWAY, WHICH IS WHERE I NORMALLY AM AT THAT TIME OF DAY, I WOULD HAVE HAD NO TIME TO REACT AND GET TO A SAFE AREA BEFORE THE CAR SHUT DOWN ON ME. IT ALSO LOCKED UP THE STEERING WHEEL AND BRAKING SYSTEM SO I HAD NEXT TO NO POWER. IT WAS INCREDIBLY SCARY. I AM JUST GLAD THAT I WAS DRIVING THE CAR, INSTEAD OF MY ELDERLY MOTHER. SHE VERY WELL MAY HAVE HAD A HEART ATTACK FROM THE FEAR. IN NO WAY SHOULD A CAR JUST SHUT DOWN MID-DRIVE LIKE THAT! I CANT EVEN BEGIN TO EXPLAIN THE AMOUNT OF WAYS HOW BADLY THAT COULD GO WRONG, AND THIS SEEMS TO BE A COMMON ISSUE WITH CHEVY VEHICLES AND THE THROTTLE BODY. EVEN IF THE THROTTLE BODY IS GOING BAD, IN NO WAY SHOULD YOUR CAR BE PROGRAMED TO JUST SHUT OFF MID-DRIVE, EVER. I REALLY HOPE THAT IS A PROGRAMING FLAW AND NOT INTENTIONAL, BECAUSE IF THAT IS INTENTIONAL, YOU ARE TRULY TRYING TO KILL PEOPLE. WHAT IS IT GOING TO TAKE FOR CHEVY/GM TO GET THE ISSUE FIXED? HOW MANY PEOPLE GETTING KILLED IN UNNECESSARY ACCIDENTS IS IT GOING TO TAKE? I PRAY THAT MYSELF OR MY FAMILY ISN'T ONE OF THEM! PLEASE CHEVY/GM, GET THIS ISSUE FIXED ALREADY.

NHTSA ID
11171961
Incident
Jan 24, 2019
Mileage
97,000 mi
Driver assistanceElectricalEngine
Filed Jan 14, 2019

TL* THE CONTACT CALLED ON BEHALF OF THE OWNER OF A 2008 CHEVROLET IMPALA. ON SEVERAL OCCASIONS, THE VEHICLE FAILED TO START AND THE REDUCED POWER WARNING INDICATOR ILLUMINATED. ADDITIONALLY, WHILE DRIVING 55 MPH, THE VEHICLE STALLED. THE CONTACT WAS UNABLE TO RESTART THE VEHICLE. THE CONTACT STATED THAT THE FAILURE WAS INTERMITTENT. THE VEHICLE WAS DIAGNOSED BY AN INDEPENDENT MECHANIC AND FAULT CODE: P-2135 WAS RETRIEVED. THE MECHANIC REPLACED THE ECM, THROTTLE BODY, ACCELERATOR PEDAL MECHANISM, AND THE WIRING HARNESS BETWEEN THE ECM AND THROTTLE BODY; HOWEVER, THE FAILURE RECURRED. THE DEALER AND MANUFACTURER WERE NOT CONTACTED. THE APPROXIMATE FAILURE MILEAGE WAS 80,000.

NHTSA ID
11166807
Incident
May 15, 2018
Mileage
80,000 mi
Driver assistanceEngineSuspension
Filed Oct 6, 2018

MY VEHICLE EXPERIENCES AN 'ENGINE POWER IS REDUCED' MESSAGE IN ADDITION TO LOSING CAPABILITY OF DRIVING FASTER THAN 40 MPH LIKELY AS A RESULT OF A COMMON FAULT BY THE MANUFACTURER.

NHTSA ID
11138845
Incident
Oct 5, 2018
Mileage
144,250 mi
Driver assistanceEngine
Filed Jun 28, 2018

TL* THE CONTACT OWNS A 2008 CHEVROLET IMPALA. WHILE DRIVING 60 MPH, THE REDUCED ENGINE POWER AND THE SERVICE STABILITY CONTROL INDICATORS ILLUMINATED AS THE VEHICLE DECELERATED. STATEN ISLAND BUICK GMC (1855 HYLAN BLVD, STATEN ISLAND, NY 10305) DIAGNOSED THAT SENSORS T2135: (THROTTLE BODY) AND P2138: (ACCELERATOR PEDAL ACTUATOR) FAILED AND NEEDED REPLACEMENT. THE VEHICLE WAS REPAIRED. THE MANUFACTURER OFFERED TO ASSIST WITH THE REPLACEMENT OF THE THROTTLE BODY, BUT NOT THE ACCELERATOR PEDAL. THE FAILURE MILEAGE WAS 59,502.

NHTSA ID
11104582
Incident
May 19, 2018
Mileage
59,502 mi
Engine
Filed Mar 30, 2018

WHEN MY IMPALA IS IN MOTION WITHIN THE MINUTES IT STATES ENGINE POWER REDUCED AND IT SLOWS DOWN THE CAR. IF I DRIVE 60 MPH OR MORE WHEN ENGINE POWER IS REDUCED THEN IT SAYS SERVICE SHUTTLING DOWN AND THE CAR WILL COMPLETELY SHUT DOWN IT'S A BIG SAFETY HAZARD ESPECIALLY WHEN I'M ON THE FREEWAY.

NHTSA ID
11082238
Incident
Aug 2, 2017
Mileage
100,000 mi
Engine
Filed Dec 28, 2017

LEAKING AND CAN'T IDENTIFY IF FRONT ENGINE COVER OIL IS LEAKING, OR ENGINE OIL FILTER ADAPTER GASKET, OR HEAD GASKET OIL LEAK. HELP! I WAS HAVING MY OIL CHANGED.

NHTSA ID
11057167
Incident
Dec 28, 2017
Mileage
57,000 mi

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

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Elsewhere on this vehicle

Data sources

Data on this page last refreshed .