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2008 Chevrolet Impala

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

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When problems were reported

Mileage at the reported incident

665 reports with mileage · 145 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Electrical System. Review the 221 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 134 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Suspension. Review the 117 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

51 crash reports10 fire reports36 injury reports

Electrical System complaints

221 reports
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36,000 miles · Jun 16, 2014
Electrical System

I PURCHASED MY 2008 CHEVY IMPALA IN 2009 ABOUT A YR AFTER MY PURCHASE I NOTICED MY REAR DRIVERS SIDE DOOR WOULD NOT LOCK OR UNLOCK WITH EITHER THE KEYLESS REMOTE OR THE LOCK BUTTON ON THE DOOR SINCE THEN THE FRONT PASSENGER DOOR LOCK HAS DID THE SAME THING. BUT THE FINAL STRAW WAS NOW THE REAR PASSENGER DOOR HAS WENT OUT. T…

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I PURCHASED MY 2008 CHEVY IMPALA IN 2009 ABOUT A YR AFTER MY PURCHASE I NOTICED MY REAR DRIVERS SIDE DOOR WOULD NOT LOCK OR UNLOCK WITH EITHER THE KEYLESS REMOTE OR THE LOCK BUTTON ON THE DOOR SINCE THEN THE FRONT PASSENGER DOOR LOCK HAS DID THE SAME THING. BUT THE FINAL STRAW WAS NOW THE REAR PASSENGER DOOR HAS WENT OUT. THAT IS UNACCEPTABLE TO ME AND MY FAMILY I HAVE TWO SMALL GRANDBABIES ONE OF THEM WITH CANCER, THAT ARE BOTH IN CARSEATS. IF ANY OF THE DOORS LOCK THEY CANNOT I REPEAT CANNOT BE UNLOCKED FROM THE OUTSIDE NOR CAN THEY BE UNLOCKED FROM THE KEYLESS REMOTE OR THE BUTTON ON THE DOOR ONCE THE DOORS ARE LOCKED THE ONLY WAY THEY CAN BE UNLOCKED IS BY TILTING THE SEAT BACK AND MANUALLY UNLOCKING THEM. THIS IS PUTTING MY GRANDCHILDREN IN GRAVE DANGER IF WE ARE IN AN ACCIDENT AND I CANNOT GET TO THEM NO ONE ELSE CAN EITHER UNLESS THEY KNOCK THE WINDOW OUT, WHICH ENDANGERS THE CHILDREN. I DEMAND TO KNOW WHY WHEN IT COMES TO THOUSANDS OF CHILDREN'S LIVES BEING PUT IN DANGER BY A DEFECT OF YOUR PRODUCT THAT YOUR COMPANY IS DRAGGING YOUR FEET ON RECALLING THESE CARS. YOUR RECALLING MILLIONS OF CARS FOR THIS DEFECT AND THAT DEFECT BUT YOUR # 1 PRIORITY SHOULD BE TO PROTECT THE CHILDREN THAT CANT PROTECT THEMSELVES. AND ALL US PARENTS/GRANDPARENTS ARE AT OUR WITS END. WE BOUGHT YOUR PRODUCT IN GOOD FAITH NOW ITS TIME FOR YOUR COMPANY TO DO WHAT'S RIGHT RECALL ALL THESE -2008- AND OTHER CHEVY IMPALAS FOR FAULTY DOOR ACTUATORS BEFORE CHILDREN GET HURT OR GOD FORBID KILLED . VERY WORRIED AND UNHAPPY GRANDMOTHER. *TR

NHTSA ODI #10598690

123,000 miles · Jun 12, 2014
Electrical SystemFuel/propulsion SystemPower Train

WAS DRIVING ON BUSY ONE LANE ROAD, REDUCED SPEED, CHECK TRACTION CONTROL, CHECK ENGINE LIGHT CAME ON AND CAR SLOWED DOWN TO 45 AND WOULD NOT GO ANY FASTER, WAS ABLE TO PULL OFF OF ROAD AND SHUT CAR OFF STARTED ABOUT 5 MINUTES LATER NO INDICATION OF THE PROBLEM. TWO DAYS LATER THE PROBLEM CAME BACK. WENT TO INTERNET TO CHECK PROB…

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WAS DRIVING ON BUSY ONE LANE ROAD, REDUCED SPEED, CHECK TRACTION CONTROL, CHECK ENGINE LIGHT CAME ON AND CAR SLOWED DOWN TO 45 AND WOULD NOT GO ANY FASTER, WAS ABLE TO PULL OFF OF ROAD AND SHUT CAR OFF STARTED ABOUT 5 MINUTES LATER NO INDICATION OF THE PROBLEM. TWO DAYS LATER THE PROBLEM CAME BACK. WENT TO INTERNET TO CHECK PROBLEM SEEMS LIKE THERE HAVE BEEN 100,000 S OF THESE PROBLEMS MANY RESULTING IN ACCIDENTS. IT DOES NOT SHOW THAT THERE HAS BEEN A RECALL. THIS IS VERY SERIOUS IF I WOULD HAVE BEEN ON A FREEWAY WITH TRUCKS TRAVELING AT HIGH SPEED I COULD HAVE BEEN KILLED. WHAT HAS THE VEHICLE SAFETY BOARD DONE TO PROTECT OWNERS OF FAULTY VEHICLES? *TR

NHTSA ODI #10597990

100,000 miles · Jun 11, 2014
Electrical SystemEngineVehicle Speed Control

OUR 2008 IMPALA LS, WITH 100,000 MILES, IS HAVING THE SAME PROBLEM I AM SEEING AT THIS WEB SITE AND ALL ACROSS THE INTERNET. LAST MONTH, MAY, 2014, AND THIS MONTH, JUNE, 2014, THERE WAS A SUDDEN REDUCED POWER ALERT ON THE DASHBOARD AND THE CHECK ENGINE LIGHT CAME ON. THE SPEED IMMEDIATELY DROPPED TO NO MORE THAN 35 MPH. BEFOR…

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OUR 2008 IMPALA LS, WITH 100,000 MILES, IS HAVING THE SAME PROBLEM I AM SEEING AT THIS WEB SITE AND ALL ACROSS THE INTERNET. LAST MONTH, MAY, 2014, AND THIS MONTH, JUNE, 2014, THERE WAS A SUDDEN REDUCED POWER ALERT ON THE DASHBOARD AND THE CHECK ENGINE LIGHT CAME ON. THE SPEED IMMEDIATELY DROPPED TO NO MORE THAN 35 MPH. BEFORE I COULD GET IT TO ADVANCE TO HAVE THEM CHECK TO SEE IF ANY CODES HAD BEEN DROPPED BY THE COMPUTER, THE CHECK ENGINE LIGHT WENT OFF. THERE WAS NO REDUCED POWER MESSAGE EITHER, AND THE SPEED RETURNED TO NORMAL. I WAS TOLD TO TRY FUEL INJECTOR CLEANER, WHICH I DID. ALL WENT WELL FOR ALMOST A MONTH, WHEN THE SAME THING HAPPENED AGAIN THIS MONTH. THIS TIME I WAS ABLE TO GET IT TO ADVANCE WITH THE CHECK ENGINE LIGHT STILL ON. THE COMPUTER HAD DROPPED 2 CODES, BOTH RELATED TO THE ACCELERATOR PEDAL POSITION SENSOR. ADVANCE DID NOT HAVE THE PART, NOR DID AUTOZONE. FORTUNATELY, NAPA DID, FOR $90, INCLUDING TAX. OUR LOCAL CHEVY DEALERSHIP WANTED $50 MORE. SINCE IT IS A VERY EASY PART TO REPLACE EVEN FOR AN AMATEUR LIKE ME, I REPLACED IT. THERE ARE ONLY 2 10 MM BOLTS TO REMOVE AND AN ELECTRICAL CONNECTION TO UNPLUG. SO IT WAS PRETTY SIMPLE, AND SO FAR, THIS HAS DONE THE TRICK, BUT IT'S ONLY BEEN 24 HOURS. THIS APPARENTLY IS A JOB THAT THE DEALERSHIPS WANT TO CHARGE $300 TO $400 TO DO. AS I SAID, THIS IS A WIDESPREAD PROBLEM FOR GM, AND THEY HAVE NOT AND WILL NOT, SO FAR, DO A RECALL. THEY SHOULD. I'M ONLY OUT $90 SO FAR, BUT OTHER PEOPLE ARE OUT MUCH MORE. IF I HAVE THE DREADED, FOLLOW-UP PROBLEM WITH THE THROTTLE BODY, I WILL BE OUT A WHOLE LOT MORE. I SENT AN E-MAIL TO CHEVROLET AFTER THE FIRST INSTANCE, AND DID GET A RESPONSE BACK. I TOLD HIM I DIDN'T WANT TO TAKE ANY FURTHER ACTION UNLESS THIS HAPPENS AGAIN. I WILL BE CONTACTING HIM AGAIN NOW ABOUT THIS LATEST INCIDENT. *TR

NHTSA ODI #10597746

87,560 miles · Jun 3, 2014
Electrical System

STARTED THE CAR, DROVE ABOUT A MILE AND A HALF TO MY DESTINATION. PARKED, TURNED KEY TO TURN CAR OFF. ENGINE TURNED OFF BUT KEY NO LONGER SWITCHES COMPLETELY OFF IN ORDER FOR ME TO TAKE THE KEY OUT OF THE IGNITION. *TR

NHTSA ODI #10595877

115,000 miles · Jun 1, 2014
Electrical SystemEngine

FREQUENTLY, SERVICE TRACTION CONTROL AND ENGINE POWER IS REDUCED LIGHTS COME ON. WHEN THIS HAPPENS, CAR IS SLUGGISH AND WILL NOT ACCELERATE. THIS IS VERY DANGEROUS BECAUSE IT HAPPENS UNEXPECTEDLY AND CAUSES VEHICLE TO DECELERATE QUICKLY. TYPICALLY THE CAR WILL START NORMALLY AFTER SITTING FOR 15-30 MINUTES BUT CHECK ENGINE LI…

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FREQUENTLY, SERVICE TRACTION CONTROL AND ENGINE POWER IS REDUCED LIGHTS COME ON. WHEN THIS HAPPENS, CAR IS SLUGGISH AND WILL NOT ACCELERATE. THIS IS VERY DANGEROUS BECAUSE IT HAPPENS UNEXPECTEDLY AND CAUSES VEHICLE TO DECELERATE QUICKLY. TYPICALLY THE CAR WILL START NORMALLY AFTER SITTING FOR 15-30 MINUTES BUT CHECK ENGINE LIGHT REMAINS ON FOR SOME TIME. ALSO, THE MESSAGE ENGINE HOT/AC OFF FIRES RANDOMLY. TEMPERATURE GAUGE RESTS AT ZERO. IT WILL START WORKING AGAIN EITHER THROUGH MANUAL RESET BY REMOVING BATTERY CABLES AND RECONNECTING OR RANDOMLY START WORKING AGAIN ON ITS OWN. THERE ARE NUMEROUS REPORTS OF BOTH ISSUES ON THE INTERNET WHICH INDICATE REPLACEMENT OF SENSORS/THROTTLE ARE VERY EXPENSIVE AND DO NOT FIX THE ISSUES. *TR

NHTSA ODI #10595378

60,000 miles · May 28, 2014
Electrical SystemLatches/locks/linkages

TL* THE CONTACT OWNS A 2008 CHEVROLET IMPALA. THE CONTACT STATED THAT ALL OF THE DOORS FAILED TO LOCK AND COULD ONLY BE UNLOCKED MANUALLY. THE VEHICLE WAS TAKEN TO THE DEALER. THE TECHNICIAN DIAGNOSED THAT THE DOOR ACTUATOR NEEDED TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE F…

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TL* THE CONTACT OWNS A 2008 CHEVROLET IMPALA. THE CONTACT STATED THAT ALL OF THE DOORS FAILED TO LOCK AND COULD ONLY BE UNLOCKED MANUALLY. THE VEHICLE WAS TAKEN TO THE DEALER. THE TECHNICIAN DIAGNOSED THAT THE DOOR ACTUATOR NEEDED TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 60,000 AND THE CURRENT MILEAGE WAS 73,000. UPDATED 8/11/14*CN THE CONSUMER STATED THE VEHICLE HAS BEEN REPAIRED. THE MANUFACTURER PAID HALF THE COST. UPDATED 8/21/2014 *JS

NHTSA ODI #10594481

155,000 miles · May 12, 2014
Electrical SystemVehicle Speed ControlInjury

WHEN DRIVING THROUGH ST. LOUIS AROUND MIDNIGHT ON I-270 ON MAY 3, THE "ENGINE POWER IS REDUCED" MESSAGE CAME ON AND THE CAR SLOWED DRAMATICALLY RIGHT IN THE MIDDLE LANE OF THE INTERSTATE. QUITE SCARY INDEED, NOT TO MENTION THE LURCHING. AFTER BEING NEARLY RUN OVER ON BOTH SIDES, I PULLED OFF IN A VERY DARK PART OF TOWN AND THE P…

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WHEN DRIVING THROUGH ST. LOUIS AROUND MIDNIGHT ON I-270 ON MAY 3, THE "ENGINE POWER IS REDUCED" MESSAGE CAME ON AND THE CAR SLOWED DRAMATICALLY RIGHT IN THE MIDDLE LANE OF THE INTERSTATE. QUITE SCARY INDEED, NOT TO MENTION THE LURCHING. AFTER BEING NEARLY RUN OVER ON BOTH SIDES, I PULLED OFF IN A VERY DARK PART OF TOWN AND THE POLICE CAME BY TO CHECK ON ME. INITIALLY THE CAR WOULDN'T START WITH THE MESSAGE, "STARTING IS DISABLED, SERVICE THROTTLE." AFTER ABOUT AN HOUR, THE THING ALLOWED ME TO START IT, BUT STILL WITH THE "POWER IS REDUCED" MESSAGE. I ACTUALLY DROVE THAT THING HOME (OVER 90 MILES) WITH SEMIS BEARING DOWN ON ME, ALTERNATING FLASHERS AND WATCHING OVER MY SHOULDER. ANYWAY, THE NEXT DAY, IT STILL WOULDN'T RUN NORMALLY, BUT I LIMPED OVER TO AN AUTOZONE AND I REPLACED THE THROTTLE ASSEMBLY AND THE THROTTLE BODY (THE ENGINE CODE SAID P0651, BUT THAT WAS A WASTE OF $300). NO HELP, SAME MESSAGE. I LET THE CAR SIT. WHEN IT FIRST STARTED UP, STILL HAD THE MESSAGE. BUT ABOUT 5 MINUTES LATER, THE CAR STARTED NORMALLY!!! THE CHECK ENGINE LIGHT IS ON NOW, BUT THOSE CODES HAVEN'T BEEN ACCURATE SO FAR. WHILE THE CAR WAS RUNNING NORMALLY, I WENT OUT AND JIGGLED ALL THE WIRING BOTH UNDER THE DASH AND ABOVE THE THROTTLE, BUT COULD NOT FIND A LOOSE WIRE OR GET THE CAR TO SHIFT INTO THE "ENGINE POWER REDUCED" MESSAGE. I ALSO TAPPED ON AND JIGGLED THE AIR BOX (BECAUSE I WAS TOLD THAT'S WHERE THE ECM IS LOCATED). STILL COULDN'T GET IT TO GO BAD. CAME BACK OUT THE NEXT TIME AND THE CAR HAD THE "ENGINE POWER IS REDUCED" MESSAGE AND RUNNING HORRIBLY. I WAS FORTUNATE NOT TO BE KILLED, THESE CARS ARE MOVING CHICANES. I AM TOTALLY AT A LOSS AS TO WHAT IS GOING ON. GM SERVICE REPS SAY "GO TO THE DEALER" BUT ONLINE SHOWS THIS ONLY RESULTS IN A BUNCH OF EXPENSIVE REPLACED PARTS THAT DIDN'T FIX THE PROBLEM. I ONLY SUFFERED A BACKACHE BUT THIS CAR IS AN ACCIDENT WAITING TO HAPPEN. *TR

NHTSA ODI #10587949

90,000 miles · May 6, 2014
Electrical SystemVehicle Speed Control

I HAVE HAD MANY PROBLEMS WITH THE ENGINE POWER BEING REDUCED DUE TO CODE 2135, IT'S A THROTTLE POSITION PROBLEM THAT HAS HAPPENED MAYBE 50-100 TIMES OVER THE PAST YEAR. I CAN CLEAN THE THROTTLE PLATE AND IT'LL BE FINE FOR A FEW DAYS, BUT IS GETTING PROGRESSIVELY WORSE. IT IS VERY DANGEROUS WHEN THE CAR'S POWER IS REDUCED SO QU…

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I HAVE HAD MANY PROBLEMS WITH THE ENGINE POWER BEING REDUCED DUE TO CODE 2135, IT'S A THROTTLE POSITION PROBLEM THAT HAS HAPPENED MAYBE 50-100 TIMES OVER THE PAST YEAR. I CAN CLEAN THE THROTTLE PLATE AND IT'LL BE FINE FOR A FEW DAYS, BUT IS GETTING PROGRESSIVELY WORSE. IT IS VERY DANGEROUS WHEN THE CAR'S POWER IS REDUCED SO QUICKLY, ESPECIALLY ON FREEWAYS. I'VE NEARLY BEEN REARENDED A FEW TIMES NOW. I'VE COMPLAINED TO CHEVROLET AND THEY ONLY SAY THERE ISN'T A RECALL AND TO TAKE IT TO THE DEALER FOR SERVICE. I'VE CONTACTED THE DEALER AND WAS TOLD THEY'D CLEAN THE THROTTLE BODY, WHICH IS WHAT I AM DOING. THERE NEEDS TO BE A RECALL FOR SAFETY'S SAKE, THIS IS A VERY DEADLY PROBLEM THAT THEY NEED TO ADDRESS. IT'S NOT THE CONSUMER'S FAULT AT ALL. THANK YOU. *TR

NHTSA ODI #10586761

Mileage unknown · May 5, 2014
Electrical System

ON FRIDAY MAY 2, 2014, I WENT AND BOUGHT $72 WORTH OF GROCERIES, ALL BUT $10 WERE FROZEN OR COLD AND IT WAS ABOUT 80 DEGREES OUTSIDE. WHEN I GOT HOME AND WENT TO TAKE THE GROCERIES OUT OF THE TRUNK THE TRUNK WOULD NOT OPEN. I THEN TOOK IT TO THE SHOP TO SEE IF THEY COULD GET IT OPEN THEY COULD NOT. THEY TOLD ME THAT THEY LOOKED…

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ON FRIDAY MAY 2, 2014, I WENT AND BOUGHT $72 WORTH OF GROCERIES, ALL BUT $10 WERE FROZEN OR COLD AND IT WAS ABOUT 80 DEGREES OUTSIDE. WHEN I GOT HOME AND WENT TO TAKE THE GROCERIES OUT OF THE TRUNK THE TRUNK WOULD NOT OPEN. I THEN TOOK IT TO THE SHOP TO SEE IF THEY COULD GET IT OPEN THEY COULD NOT. THEY TOLD ME THAT THEY LOOKED THE PROBLEM UP ONLINE AND SAID IT WAS A FACTORY DEFECT/RECALL AND THAT IF I TOOK IT TO AN ACTUAL CHEVY DEALERSHIP OR MANUFACTURE THAT THEY WOULD HAVE TO PAY FOR IT. WHEN I TOOK IT TO A CHEVY DEALERSHIP, SATURDAY MAY 3, 2014, THEY SAID THAT I WAS GOING TO HAVE TO PAY FOR IT BECAUSE MY CAR ISN'T UNDER WARRANTY ANY MORE. I FEEL LIKE CHEVY SHOULD STILL PAY FOR IT AND REIMBURSE ME FOR MY GROCERIES THAT I LOST. IT WAS NOT MY FAULT THAT THE TRUNK WOULD NOT OPEN AND IT IS ALSO NOT MY FAULT THAT THE PREVIOUS OWNER EITHER 1) DID NOT TURN THE RECALL IN OR 2) DIDN'T BOTHER TO TELL ANYONE ABOUT IT. *TR

NHTSA ODI #10586521

94,658 miles · May 3, 2014
Electrical System

THE KEY IS STUCK IN THE IGNITION SWITCH AND WON'T COME OUT. *TR

NHTSA ODI #10586360

Official recalls

2

14V355000 · Electrical System:ignition

Jun 23, 2014

This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring. General Motors LLC (GM) is recalling certain model year 2005-2009 Buick LaCrosse, 2006-2011 Buick Lucerne, 2000-2005 Cadillac DeVille, 2006-2011 Cadillac DTS, 2006-2014 Chevrolet Impala, and 2006-2007 Chevrolet Monte Carlo vehicles. In the affected vehicles, the weight on the key ring and road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine.

Consequence & remedy

Consequence: If the key is not in the run position, the air bags may not deploy if the vehicle is involved in a crash, increasing the risk of injury. Additionally, a key knocked out of the run position will cause loss of engine power, power steering, and power braking, increasing the risk of a vehicle crash.

Remedy: GM will notify owners, and dealers will install two key rings and an insert in the key slot or a cover over the key head on all ignition keys, free of charge. The recall began on September 23, 2014. Owners may contact General Motors customer service at 1-800-521-7300 (Buick), 1-800-458-8006 (Cadillac), and 1-800-222-1020 (Chevrolet). GM's number for this recall is 14299.

12V377000 · Suspension:front:control Arm:lower Arm

Aug 3, 2012

General Motors (GM) is recalling certain model year 2008-2012 Chevrolet Impala police vehicles because the front lower control arms may fracture. This safety recall does not include non-police Chevrolet Impala vehicles.

Consequence & remedy

Consequence: A broken control arm can result in the loss of control of the vehicle, increasing the risk of a crash.

Remedy: GM will notify owners, and dealers will replace both front lower control arms, free of charge. The safety recall began on August 21, 2012. Owners may contact the Chevrolet owner center at 1-866-694-6546.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

1

DP14001 · Passenger Air Bag Ocs Algorithm

Opened Jul 22, 2014 · Closed Mar 7, 2017

Status: closed (inferred from source dates) · Air Bags; Air Bags:frontal:sensor/control MODULE-INACTIVE

The Agency received a petition on November 14, 2013 requesting an investigation into the operation of the passenger air bag Occupant Classification System (OCS) software logic and algorithm.The petitioner states that due to this alleged defect, the passenger air bag may be suppressed at point of impact and not provided the occupant protection as needed in a crash.On July 22, 2014, NHTSA opened DP14-001 to further review the crash event and perform a more comprehensive search and analysis of the Fatality Analysis Reporting System (FARS).The Agency also collected manufacturers reports on the alleged OCS issue on the subject Impala vehicles and other GM and non-GM peer vehicles.After examination of the petition and available data relating to the subject vehicle's OCS and the specific crash incident where the OCS allegedly failed to operate properly, NHTSA did not identify an issue with the MY2008 Impala involved in the subject crash, nor has it identified a safety-related defect trend existing in the OCS used in the MY 2006-2008 Impala vehicles, in GM peer vehicles or in other non-GM peer vehicles.NHTSA has concluded that further expenditure of the agency's investigative resources is not warranted. The agency accordingly has denied the petition.However, the agency will take further action if warranted by changing future circumstances. The official petition denial, as published in the Federal Register, is available in the document file for this defect petition.The single complaint and crash noted in the Failure Report above is the petitioner's VOQ (10568388) and can be reviewed online at https://www.nhtsa.gov/recalls?nhtsaId=10568388.

Additional source detail variants (2)

Air Bags:frontal:sensor/control MODULE-INACTIVE

The Agency received a petition on November 14, 2013 requesting an investigation into the operation of the passenger air bag Occupant Classification System (OCS) software logic and algorithm.The petitioner states that due to this alleged defect, the passenger air bag may be suppressed at point of impact and not provided the occupant protection as needed in a crash.On July 22, 2014, NHTSA opened DP14-001 to further review the crash event and perform a more comprehensive search and analysis of the Fatality Analysis Reporting System (FARS).The Agency also collected manufacturers reports on the alleged OCS issue on the subject Impala vehicles and other GM and non-GM peer vehicles.After examination of the petition and available data relating to the subject vehicle's OCS and the specific crash incident where the OCS allegedly failed to operate properly, NHTSA did not identify an issue with the MY2008 Impala involved in the subject crash, nor has it identified a safety-related defect trend existing in the OCS used in the MY 2006-2008 Impala vehicles, in GM peer vehicles or in other non-GM peer vehicles.NHTSA has concluded that further expenditure of the agency's investigative resources is not warranted. The agency accordingly has denied the petition.However, the agency will take further action if warranted by changing future circumstances. The official petition denial, as published in the Federal Register, is available in the document file for this defect petition.The single complaint and crash noted in the Failure Report above is the petitioner's VOQ (10568388) and can be reviewed online at https://www.nhtsa.gov/recalls?nhtsaId=10568388.

Air Bags

The Agency received a petition on November 14, 2013 requesting an investigation into the operation of the passenger air bag Occupant Classification System (OCS) software logic and algorithm.The petitioner states that due to this alleged defect, the passenger air bag may be suppressed at point of impact and not provided the occupant protection as needed in a crash.On July 22, 2014, NHTSA opened DP14-001 to further review the crash event and perform a more comprehensive search and analysis of the Fatality Analysis Reporting System (FARS).The Agency also collected manufacturers reports on the alleged OCS issue on the subject Impala vehicles and other GM and non-GM peer vehicles.After examination of the petition and available data relating to the subject vehicle's OCS and the specific crash incident where the OCS allegedly failed to operate properly, NHTSA did not identify an issue with the MY2008 Impala involved in the subject crash, nor has it identified a safety-related defect trend existing in the OCS used in the MY 2006-2008 Impala vehicles, in GM peer vehicles or in other non-GM peer vehicles.NHTSA has concluded that further expenditure of the agency's investigative resources is not warranted. The agency accordingly has denied the petition.However, the agency will take further action if warranted by changing future circumstances. The official petition denial, as published in the Federal Register, is available in the document file for this defect petition.The single complaint and crash noted in the Failure Report above is the petitioner's VOQ (10568388) and can be reviewed online at https://www.nhtsa.gov/recalls?nhtsaId=10568388.