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2008 Chevrolet Hhr

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2008 Chevrolet Hhr do not stand out strongly from the model-year median of 565.5.

About this comparison →

When problems were reported

Mileage at the reported incident

499 reports with mileage · 117 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.

  • Steering. Review the 297 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 108 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Fuel/propulsion System. Review the 71 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

30 crash reports6 fire reports21 injury reports

What owners actually said

616 reports
2,024 miles · Jul 31, 2009
Air BagsSeatsService Brakes, Electric

2008 HHR SS FAULTY BRAKES FROM COLD START. EXCESSIVE FRONTAL BRAKE DUST. SERVICED AT 2000 MILES. SERVICED AGAIN AT 17,000 MILES NEEDING NEW BRAKES.DEALERSHIP SAYS THIS IS NORMAL CONDITION. MY SS MODEL HAS 2 DIFFERENT FRONT SEATS WHICH DEALERSHIP SAYS THIS IS NORMAL .SPEED CONTROL FLOATS,SLOW TO RESPOND..ORIGINALLY FROZE AT 70MP…

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2008 HHR SS FAULTY BRAKES FROM COLD START. EXCESSIVE FRONTAL BRAKE DUST. SERVICED AT 2000 MILES. SERVICED AGAIN AT 17,000 MILES NEEDING NEW BRAKES.DEALERSHIP SAYS THIS IS NORMAL CONDITION. MY SS MODEL HAS 2 DIFFERENT FRONT SEATS WHICH DEALERSHIP SAYS THIS IS NORMAL .SPEED CONTROL FLOATS,SLOW TO RESPOND..ORIGINALLY FROZE AT 70MPH. I DID RECEIVE A CITATION FOR SPEEDING CUZ OF MALFUNCTIONED. L/F /F AND R/F TIRE PRESSURE READINGS ARE REVERSED ACCORDING TO THE IP. VERY IRATE 30 YEAR GM EMPLOYEE WHO PAID CASH FOR THIS MESS. *TR

NHTSA ODI #10279010

11,377 miles · Jul 22, 2009
Electrical System

TL*THE CONTACT OWNS A 2008 CHEVROLET HHR. THE CONTACT STATED THAT THE KEY WOULD NOT TURN IN THE IGNITION. IN ADDITION, THE STEERING WHEEL AND GEAR SHIFT WOULD LOCK. THE DEALER COULD NOT DUPLICATE THE FAILURES. THE MANUFACTURER STATED THAT THE FAILURE WAS A COMMON ISSUE WITH HER MODEL VEHICLE; HOWEVER, THERE WERE NO RECALLS. …

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TL*THE CONTACT OWNS A 2008 CHEVROLET HHR. THE CONTACT STATED THAT THE KEY WOULD NOT TURN IN THE IGNITION. IN ADDITION, THE STEERING WHEEL AND GEAR SHIFT WOULD LOCK. THE DEALER COULD NOT DUPLICATE THE FAILURES. THE MANUFACTURER STATED THAT THE FAILURE WAS A COMMON ISSUE WITH HER MODEL VEHICLE; HOWEVER, THERE WERE NO RECALLS. GENERAL MOTORS ADVISED THE CONTACT TO DRIVE INTO A PARKING SPOT IN A STRAIGHT POSITION AND ENSURE THAT THE WHEELS WERE ALSO STRAIGHT. AFTERWARDS, THE CONTACT WAS INFORMED TO WIGGLE THE KEY. AFTER TEN MINUTES, SHE WAS ABLE TO REMOVE THE KEY FROM THE IGNITION, BUT THE VEHICLE WOULD NOT START ONCE SHE INSERTED THE KEY AGAIN. THE FAILURE MILEAGE WAS 11,377 AND CURRENT MILEAGE WAS 24,000. UPDATED 8/18/09 *CN THE DEALER REPLACED THE IGNITION LOCK CYLINDER. UPDATED 08/21/09.*JB

NHTSA ODI #10277914

13,850 miles · Jun 30, 2009
Electrical System

SO FAR IT HAS HAPPENED TWICE MY WIFE LEAVING WORK THE CAR STALLED. FIRST TIME HER SPEED WAS APROX. 40 MPH, 10 MINUTES INTO HER DRIVE. THE NEXT DAY WE TOOK THE 2008 CHEVY HHR TO THE DEALER IN CHINO CALIFORNIA ON FEB,26,2009 .THEY KEPT THE CAR FOR A COUPLE OF DAYS,AND COULD NOT FIND A PROBLEM. SECOND TIME HER SPEED WAS APROX, 35 M…

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SO FAR IT HAS HAPPENED TWICE MY WIFE LEAVING WORK THE CAR STALLED. FIRST TIME HER SPEED WAS APROX. 40 MPH, 10 MINUTES INTO HER DRIVE. THE NEXT DAY WE TOOK THE 2008 CHEVY HHR TO THE DEALER IN CHINO CALIFORNIA ON FEB,26,2009 .THEY KEPT THE CAR FOR A COUPLE OF DAYS,AND COULD NOT FIND A PROBLEM. SECOND TIME HER SPEED WAS APROX, 35 MPH, 5 MINUTES INTO HER DRIVE. DATE JUNE 30,2009. BOTH TIMES SEE WAS ABLE TO COAST OVER TO THE SIDE OF THE ROAD. AND BOTH TIMES THE CAR STARTED RIGHT AWAY WITH NO INDICATION OF TROUBLE. *TR

NHTSA ODI #10275403

16,598 miles · May 19, 2009
Service Brakes, HydraulicSuspension

CAR WAS APPROX 4 MONTHS OLD AND BRAKES STARTED SQUEAKING-TOOK INTO DEALER-THEY TURNED THE ROTORS-FIXED FOR ABOUT 2 WKS - ITS BACK AGAIN AND NOW WHEN I APPLY BRAKES THE FRONT END OF THE CAR SHAKES VIOLENTLY. I AM SCARED TO DRIVE THIS VEHICLE. I'VE TRIED TO ENTER SEVERAL TIMES - IT WILL NOT TAKE IT. *TR

NHTSA ODI #10269313

32,000 miles · May 13, 2009
Air BagsCrashInjury

AFTER A SIDE COLLISION MY CAR ROLLED AND LANDED ON THE PASSENGER SIDE OF THE VEHICLE. MY 2008 HHR LS HAS NO SIDE AIRBAGS, HOWEVER IT HAS DRIVER AND PASSENGER AIRBAGS AND THESE DID NO DEPLOY EVEN THOUGH MY CAR ALSO HAS SUBSTANTIAL FRONTAL DAMAGE FROM THE ROLL. *TR

NHTSA ODI #10268680

7,000 miles · May 11, 2009
Exterior LightingFire

TL*THE CONTACT OWNS A 2008 CHEVROLET HHR. THE CONTACT STATED THAT THE ENTIRE REAR PASSENGER SIDE TAIL LIGHT UNIT MELTED. THE DRIVER'S SIDE TAIL LIGHT IS NEXT TO THE GAS TANK AND SHE IS CONCERNED ABOUT HER VEHICLE EXPLODING. THE DEALER ADVISED HER TO BRING IN THE VEHICLE FOR REPAIR. THE FAILURE MILEAGE WAS 7,000.

NHTSA ODI #10268404

7,350 miles · Apr 27, 2009
Service Brakes, HydraulicCrash

TL*THE CONTACT OWNS A 2008 CHEVROLET HHR. THE CONTACT STATED THAT WHENEVER SHE STARTS THE VEHICLE AND DRIVES FORWARD OR BACKWARDS, THERE IS NO BRAKING POWER. WHEN THE BRAKE PEDAL IS DEPRESSED, THE VEHICLE CONTINUES TO MOVE. SHE MUST PUMP THE BRAKE PEDAL WITH MUCH FORCE IN ORDER FOR THE VEHICLE TO STOP. ON ONE OCCASION, THE F…

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TL*THE CONTACT OWNS A 2008 CHEVROLET HHR. THE CONTACT STATED THAT WHENEVER SHE STARTS THE VEHICLE AND DRIVES FORWARD OR BACKWARDS, THERE IS NO BRAKING POWER. WHEN THE BRAKE PEDAL IS DEPRESSED, THE VEHICLE CONTINUES TO MOVE. SHE MUST PUMP THE BRAKE PEDAL WITH MUCH FORCE IN ORDER FOR THE VEHICLE TO STOP. ON ONE OCCASION, THE FAILURE CAUSED HER TO REAR-END ANOTHER VEHICLE. THERE WERE NO INJURIES AND THE SPEED WAS UNKNOWN. THE VEHICLE HAS BEEN TAKEN TO THE DEALER AT LEAST FOUR TIMES, BUT THEY CANNOT DETERMINE THE CAUSE OF THE FAILURE. THE DEALER PROVIDED HER WITH A BROCHURE TO KEEP IN HER VEHICLE IN CASE OF A CRASH, WHICH STATED THAT SHE HAS BEEN EXPERIENCING BRAKE FAILURE AND WAS NOT AT FAULT FOR THE CRASH. THE FAILURE MILEAGE WAS 7,350.

NHTSA ODI #10266811

30,000 miles · Apr 18, 2009
Service Brakes, Hydraulic

TWICE IN THE FIRST 30000 MILES A PULSATING FEELING IN THE BRAKE PEDDLE HAD DEVELOPED. THE DEALER SAID THE FRONT ROTORS WERE WARPED. THE FIX WAS TO TURN THE ROTORS. THE NEXT TIME THEY WILL HAVE TO BE REPLACED. THIS NEED FOR BRAKE SERVICE EVERY 15,000 MILES IS NOT RIGHT. THE NEXT TIME THIS HAPPENS THE CAR WILL NOT BE UNDER WARRANT…

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TWICE IN THE FIRST 30000 MILES A PULSATING FEELING IN THE BRAKE PEDDLE HAD DEVELOPED. THE DEALER SAID THE FRONT ROTORS WERE WARPED. THE FIX WAS TO TURN THE ROTORS. THE NEXT TIME THEY WILL HAVE TO BE REPLACED. THIS NEED FOR BRAKE SERVICE EVERY 15,000 MILES IS NOT RIGHT. THE NEXT TIME THIS HAPPENS THE CAR WILL NOT BE UNDER WARRANTY AND WILL CAUSE ME TO INCUR A CONSIDERABLE EXPENSE. *TR

NHTSA ODI #10265942

Mileage unknown · Apr 15, 2009
Electrical System

GAUGE SHOWS YOU ARE GOING 120MPH, HAS HAPPENED 4 TIMES, LAST FOR A FEW HOURS TO A FEW DAYS. NOT SAFE NOT KNOWING WHAT SPEED YOU ARE DRIVING. *TR

NHTSA ODI #10265425

11,000 miles · Apr 14, 2009
Service Brakes, Hydraulic

I HAVE A 2008 CHEVY HHR. FOUR MONTHS AFTER RECEIVING THE VEHICLE, I NOTICED THAT THE BRAKES WERE SQUEALING EXCESSIVELY. ADDITIONALLY, IT WAS PULLING TO THE RIGHT WHEN STOPPING. I TOOK IT INTO VAL-MARK CHEVROLET, NEW BRAUNFELS, TEXAS. I WAS TOLD THAT THEY COULD REALLY FIND ANYTHING WRONG OTHER THAN THE FRONT PADS WERE WEARING…

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I HAVE A 2008 CHEVY HHR. FOUR MONTHS AFTER RECEIVING THE VEHICLE, I NOTICED THAT THE BRAKES WERE SQUEALING EXCESSIVELY. ADDITIONALLY, IT WAS PULLING TO THE RIGHT WHEN STOPPING. I TOOK IT INTO VAL-MARK CHEVROLET, NEW BRAUNFELS, TEXAS. I WAS TOLD THAT THEY COULD REALLY FIND ANYTHING WRONG OTHER THAN THE FRONT PADS WERE WEARING UNEVENLY. THEY WERE REPLACED. IN DECEMBER OF 08, I TOOK MY CAR TO CHAMPION CHEVROLET, CORPUS CHRISTI, TEXAS COMPLAINING OF THE SAME PROBLEM. THEY ADVISED THE BACK ROTORS WERE WARPED AND NEEDED TO BE RESURFACED. THAT WAS DONE. I HAVE JUST TAKEN MY CAR BACK IN TO VAL-MARK. NOW THE FRONT ROTORS ARE WARPED AND NEED TO BE RESURFACED. MR. JIM ROBINSON OF VAL-MARK SAYS THAT I WILL NEED TO PAY FOR THE RESURFACING. IT IS MY CONTENTION THAT THIS IS AN ONGOING PROBLEM AND SHOULD BE COVERED. ADDITIONALLY, I FEEL RESURFACING IN ONLY PUTTING A BANDAID ON THE PROBLEM. THE DEALERSHIP HAS NOW CHANGED POSITIONS AND STATES THAT THE FRONT PAD WERE NOT REPLACED FOR UNEVEN WARE, BUT ONLY AS A GOODWILL GESTURE. *TR

NHTSA ODI #10265323

Official recalls

4

14V171000 · Electrical System:ignition

Apr 10, 2014

General Motors LLC (GM) is recalling certain model year 2005-2010 Chevrolet Cobalt, 2006-2011 Chevrolet HHR, 2007-2010 Pontiac G5, 2006-2010 Pontiac Solstice, 2003-2007 Saturn Ion, and 2007-2010 Saturn Sky vehicles. In the affected vehicles, the key can be removed from the ignition when the ignition is not in the "Off" position.

Consequence & remedy

Consequence: If the key can be removed from the ignition when the ignition is not in the "off" position, the vehicle could roll away: (a) for an automatic transmission, if the transmission is not in the "Park" position; or (b) for a manual transmission, if the parking brake is not engaged and the transmission is not in the "Reverse" position. This potential for rollaway increases the risk for a crash and occupant or pedestrian injuries.

Remedy: General Motors will notify owners, and for vehicles that were built with the defective ignition cylinder and have not previously had the ignition cylinder replaced with the redesigned part, dealers will replace the ignition cylinder and cut and, if necessary, re-learn two ignition/door keys for each vehicle. For vehicles that were built with the redesigned ignition cylinder or had the ignition cylinder replaced with the redesigned part, dealers will cut and, if necessary, re-learn two ignition/door keys for each vehicle. The recall began on April 18, 2014. Chevrolet owners may contact General Motors at 1-800-222-1020, Pontiac owners at 1-800-762-2737, and Saturn owners at 1-800-553-6000. General Motors' number for this recall is 14113 for the ignition lock cylinder and key replacement, and 14133 for only key replacements. Note: Until a vehicle has been remedied, owners and operators are advised that when exiting, to be sure that the vehicle is in "Park," or in the case of a manual transmission, that the vehicle is in the "Reverse" position and the parking brake is engaged.

14V047000 · Air Bags; Electrical System:ignition:switch

Feb 10, 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) notified the agency on February 10, 2014 that they are recalling 619,122 model year 2005-2007 Chevrolet Cobalt, and 2007 Pontiac G5 vehicles. On February 25, 2014, GM increased the recall to include an additional 748,024 model year 2006-2007 Chevrolet HHR and Pontiac Solstice vehicles and 2003-2007 Saturn Ion vehicles and 2007 Saturn Sky vehicles. In these models, the weight on the key ring and/or road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine. On March 27, 2014, GM notified the agency that the defective ignition switches may have been used as service replacement parts on other vehicles, and as a result GM will be recalling certain model year 2008-2010 Chevrolet Cobalt, Saturn Sky, and Pontiac G5 and Solstice, and 2008-2011 Chevrolet HHR vehicles. The part numbers for the service parts are 10392423 (a/k/a ACDelco D1461F), 10392737, 15857948, 15854953, 15896640, and 25846762. This expansion represents an additional 823,788 vehicles.

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.

Remedy: GM will notify owners, and dealers will replace the ignition switch, free of charge. An interim notification was issued to owners of 2007 and earlier models on March 10, 2014, informing them of the safety defect. Owners of 2008 and later vehicles will be mailed an interim letter on April 21, 2014. All affected owners will receive another letter once parts are available. The recall began on April 18, 2014. Owners may contact Chevrolet at 1-800-222-1020, Pontiac at 1-800-762-2737 or Saturn at 1-800-553-6000. GM's number for the initial recall is 13454 and 14063 for the expansion. GM’s recall number for the vehicles that may have received the replacement parts is 14092. Note: Until the recall repairs have been performed, it is very important that customers remove all items from their key rings, leaving only the vehicle key. The key fob (if applicable), should also be removed from the key ring. Always wear your seatbelt.

Additional source detail variants (2)

Air Bags

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) notified the agency on February 10, 2014 that they are recalling 619,122 model year 2005-2007 Chevrolet Cobalt, and 2007 Pontiac G5 vehicles. On February 25, 2014, GM increased the recall to include an additional 748,024 model year 2006-2007 Chevrolet HHR and Pontiac Solstice vehicles and 2003-2007 Saturn Ion vehicles and 2007 Saturn Sky vehicles. In these models, the weight on the key ring and/or road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine. On March 27, 2014, GM notified the agency that the defective ignition switches may have been used as service replacement parts on other vehicles, and as a result GM will be recalling certain model year 2008-2010 Chevrolet Cobalt, Saturn Sky, and Pontiac G5 and Solstice, and 2008-2011 Chevrolet HHR vehicles. The part numbers for the service parts are 10392423 (a/k/a ACDelco D1461F), 10392737, 15857948, 15854953, 15896640, and 25846762. This expansion represents an additional 823,788 vehicles.

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.

Remedy: GM will notify owners, and dealers will replace the ignition switch, free of charge. An interim notification was issued to owners of 2007 and earlier models on March 10, 2014, informing them of the safety defect. Owners of 2008 and later vehicles will be mailed an interim letter on April 21, 2014. All affected owners will receive another letter once parts are available. The recall began on April 18, 2014. Owners may contact Chevrolet at 1-800-222-1020, Pontiac at 1-800-762-2737 or Saturn at 1-800-553-6000. GM's number for the initial recall is 13454 and 14063 for the expansion. GM’s recall number for the vehicles that may have received the replacement parts is 14092. Note: Until the recall repairs have been performed, it is very important that customers remove all items from their key rings, leaving only the vehicle key. The key fob (if applicable), should also be removed from the key ring. Always wear your seatbelt.

Electrical System:ignition:switch

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) notified the agency on February 10, 2014 that they are recalling 619,122 model year 2005-2007 Chevrolet Cobalt, and 2007 Pontiac G5 vehicles. On February 25, 2014, GM increased the recall to include an additional 748,024 model year 2006-2007 Chevrolet HHR and Pontiac Solstice vehicles and 2003-2007 Saturn Ion vehicles and 2007 Saturn Sky vehicles. In these models, the weight on the key ring and/or road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine. On March 27, 2014, GM notified the agency that the defective ignition switches may have been used as service replacement parts on other vehicles, and as a result GM will be recalling certain model year 2008-2010 Chevrolet Cobalt, Saturn Sky, and Pontiac G5 and Solstice, and 2008-2011 Chevrolet HHR vehicles. The part numbers for the service parts are 10392423 (a/k/a ACDelco D1461F), 10392737, 15857948, 15854953, 15896640, and 25846762. This expansion represents an additional 823,788 vehicles.

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.

Remedy: GM will notify owners, and dealers will replace the ignition switch, free of charge. An interim notification was issued to owners of 2007 and earlier models on March 10, 2014, informing them of the safety defect. Owners of 2008 and later vehicles will be mailed an interim letter on April 21, 2014. All affected owners will receive another letter once parts are available. The recall began on April 18, 2014. Owners may contact Chevrolet at 1-800-222-1020, Pontiac at 1-800-762-2737 or Saturn at 1-800-553-6000. GM's number for the initial recall is 13454 and 14063 for the expansion. GM’s recall number for the vehicles that may have received the replacement parts is 14092. Note: Until the recall repairs have been performed, it is very important that customers remove all items from their key rings, leaving only the vehicle key. The key fob (if applicable), should also be removed from the key ring. Always wear your seatbelt.

08V444000 · Latches/locks/linkages:doors:latch

Sep 3, 2008

GM IS RECALLING 296,422 MY 2006-2008 CHEVROLET HHR VEHICLES FOR FAILING TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 201, 'OCCUPANT PROTECTION IN INTERIOR IMPACT." THE DOOR ON THE STORAGE BIN IN THE TOP CENTER OF THE INSTRUMENT PANEL FAILED TO REMAIN CLOSED AS REQUIRED.

Consequence & remedy

Consequence: THIS STANDARD SPECIFIES PERFORMANCE REQUIREMENTS TO PROVIDE HEAD IMPACT PROTECTION FOR OCCUPANTS.

Remedy: A REDESIGNED LATCH WILL BE MADE AVAILABLE. THE RECALL BEGAN ON DECEMBER 23, 2008. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438, OR THROUGH THEIR WEBSITE AT <A HREF=HTTP://WWW.GMOWNERCENTER.COM>HTTP://WWW.GMOWNERCENTER.COM</A> .

08V046000 · Air Bags

Jan 30, 2008

GM IS RECALLING 181,516 MY 2006-2008 CHEVROLET HHR VEHICLES NOT EQUIPPED WITH OPTIONAL ROOF RAIL AIR BAGS FOR FAILING TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 201, 'OCCUPANT PROTECTION IN INTERIOR IMPACT.' IN TESTS, ONE OF THE UPPER INTERIOR OCCUPANT PROTECTION TEST POINTS EXCEEDED THE STANDARD'S REQUIREMENT.

Consequence & remedy

Consequence: THIS STANDARD SPECIFIES PERFORMANCE REQUIREMENTS TO PROVIDE HEAD IMPACT PROTECTION FOR OCCUPANTS.

Remedy: DEALERS WILL INSTALL AN ENERGY-ABSORBING PLASTIC PIECE TO THE HEADLINER TRIM. THE RECALL BEGAN ON APRIL 2, 2008. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438 OR THROUGH THEIR WEBSITE AT <A HREF=HTTP://WWW.GMOWNERCENTER.COM>HTTP://WWW.GMOWNERCENTER.COM</A> .

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

PE20011 · Fuel Line Leak

Opened Jul 5, 2020 · Closed Aug 17, 2023

Status: closed (inferred from source dates) · Fuel System, Gasoline; Fuel System, Other:delivery:hoses, Lines/piping, And Fittings; Fuel/propulsion System

On July 5, 2020, the Office of Defects Investigations (ODI) opened PE20-011 to investigate instances of metal fuel lines under the vehicle corroding and leaking fuel in model year (MY) 2008 through 2010 Chevrolet Cobalt and 2008 through 2009 Chevrolet HHR passenger cars manufactured by General Motors (GM). The metal fuel lines are corroding and leaking fuel in the area between the front and rear wheels on the driver's side of the vehicle before the muffler. Most consumers allege a fuel odor and/or an observable fuel leak that alerts them to the condition.The subject metal fuel lines have a protective AGE coating and, in the vicinity of the left rear wheel, are further wrapped in a foil heat shield. The AGE coating consists of an annealed zinc aluminum alloy metal coating with extended corrosion protection paint. Under certain conditions, water and corrosive road deicing agents may enter a crevice between the heat shield and the AGE coating. With extended environmental exposure in high corrosive environments, the AGE coating can degrade. If it degrades enough, the base metal lines may begin to corrode beneath the heat shield.Corrosion to the fuel lines may eventually cause a perforation to develop in the line, allowing fuel vapors to escape from between the line and the heat shield, emitting a fuel odor that will be detectable to the vehicle operator. If the corrosion progresses, fuel may begin to weep from the line. Further metal degradation due to corrosion could create a drip or a mist of fuel. If this occurs, vehicle owners may see drips, spots, or puddles on the ground near the rear portion of the vehicle, primarily along the driver's side rear wheel.The majority of allegations (85%) were reported for vehicles that are operated in the salt belt region of the United States. This area includes states in the Northeast, mid-Atlantic, and Midwest regions. Additionally, the average failure mileage in the subject vehicles is approximately 111,000 across all data sources.Considering the low manufacturer complaint/warranty rates of fuel line replacement, the fact that the majority of failures are concentrated in salt belt states, high failure mileages, as well as the field exposure time for the subject vehicles, and the highly detectable and progressive nature of this failure over time, the potential safety consequences of this issue are very low. To date, there have been no reported crashes, injuries, or fatalities related to this issue. There are two reported fires in ODI data and no reported fires in GM data. Both ODI reported fires were minor, occurred after the vehicle was parked, and were extinguished utilizing fire extinguishers.In view of the progressive failure occurring at high mileages, the age of the subject vehicles, the high detectability of the leak, and the majority of failures occurred in salt belt states, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances.Review the ODI reports cited above at nhtsa.gov under the attached identification numbers.

Additional source detail variants (3)

Fuel/propulsion System

On July 5, 2020, the Office of Defects Investigations (ODI) opened PE20-011 to investigate instances of metal fuel lines under the vehicle corroding and leaking fuel in model year (MY) 2008 through 2010 Chevrolet Cobalt and 2008 through 2009 Chevrolet HHR passenger cars manufactured by General Motors (GM). The metal fuel lines are corroding and leaking fuel in the area between the front and rear wheels on the driver's side of the vehicle before the muffler. Most consumers allege a fuel odor and/or an observable fuel leak that alerts them to the condition.The subject metal fuel lines have a protective AGE coating and, in the vicinity of the left rear wheel, are further wrapped in a foil heat shield. The AGE coating consists of an annealed zinc aluminum alloy metal coating with extended corrosion protection paint. Under certain conditions, water and corrosive road deicing agents may enter a crevice between the heat shield and the AGE coating. With extended environmental exposure in high corrosive environments, the AGE coating can degrade. If it degrades enough, the base metal lines may begin to corrode beneath the heat shield.Corrosion to the fuel lines may eventually cause a perforation to develop in the line, allowing fuel vapors to escape from between the line and the heat shield, emitting a fuel odor that will be detectable to the vehicle operator. If the corrosion progresses, fuel may begin to weep from the line. Further metal degradation due to corrosion could create a drip or a mist of fuel. If this occurs, vehicle owners may see drips, spots, or puddles on the ground near the rear portion of the vehicle, primarily along the driver's side rear wheel.The majority of allegations (85%) were reported for vehicles that are operated in the salt belt region of the United States. This area includes states in the Northeast, mid-Atlantic, and Midwest regions. Additionally, the average failure mileage in the subject vehicles is approximately 111,000 across all data sources.Considering the low manufacturer complaint/warranty rates of fuel line replacement, the fact that the majority of failures are concentrated in salt belt states, high failure mileages, as well as the field exposure time for the subject vehicles, and the highly detectable and progressive nature of this failure over time, the potential safety consequences of this issue are very low. To date, there have been no reported crashes, injuries, or fatalities related to this issue. There are two reported fires in ODI data and no reported fires in GM data. Both ODI reported fires were minor, occurred after the vehicle was parked, and were extinguished utilizing fire extinguishers.In view of the progressive failure occurring at high mileages, the age of the subject vehicles, the high detectability of the leak, and the majority of failures occurred in salt belt states, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances.Review the ODI reports cited above at nhtsa.gov under the attached identification numbers.

Fuel System, Gasoline

On July 5, 2020, the Office of Defects Investigations (ODI) opened PE20-011 to investigate instances of metal fuel lines under the vehicle corroding and leaking fuel in model year (MY) 2008 through 2010 Chevrolet Cobalt and 2008 through 2009 Chevrolet HHR passenger cars manufactured by General Motors (GM). The metal fuel lines are corroding and leaking fuel in the area between the front and rear wheels on the driver's side of the vehicle before the muffler. Most consumers allege a fuel odor and/or an observable fuel leak that alerts them to the condition.The subject metal fuel lines have a protective AGE coating and, in the vicinity of the left rear wheel, are further wrapped in a foil heat shield. The AGE coating consists of an annealed zinc aluminum alloy metal coating with extended corrosion protection paint. Under certain conditions, water and corrosive road deicing agents may enter a crevice between the heat shield and the AGE coating. With extended environmental exposure in high corrosive environments, the AGE coating can degrade. If it degrades enough, the base metal lines may begin to corrode beneath the heat shield.Corrosion to the fuel lines may eventually cause a perforation to develop in the line, allowing fuel vapors to escape from between the line and the heat shield, emitting a fuel odor that will be detectable to the vehicle operator. If the corrosion progresses, fuel may begin to weep from the line. Further metal degradation due to corrosion could create a drip or a mist of fuel. If this occurs, vehicle owners may see drips, spots, or puddles on the ground near the rear portion of the vehicle, primarily along the driver's side rear wheel.The majority of allegations (85%) were reported for vehicles that are operated in the salt belt region of the United States. This area includes states in the Northeast, mid-Atlantic, and Midwest regions. Additionally, the average failure mileage in the subject vehicles is approximately 111,000 across all data sources.Considering the low manufacturer complaint/warranty rates of fuel line replacement, the fact that the majority of failures are concentrated in salt belt states, high failure mileages, as well as the field exposure time for the subject vehicles, and the highly detectable and progressive nature of this failure over time, the potential safety consequences of this issue are very low. To date, there have been no reported crashes, injuries, or fatalities related to this issue. There are two reported fires in ODI data and no reported fires in GM data. Both ODI reported fires were minor, occurred after the vehicle was parked, and were extinguished utilizing fire extinguishers.In view of the progressive failure occurring at high mileages, the age of the subject vehicles, the high detectability of the leak, and the majority of failures occurred in salt belt states, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances.Review the ODI reports cited above at nhtsa.gov under the attached identification numbers.

Fuel System, Other:delivery:hoses, Lines/piping, And Fittings

On July 5, 2020, the Office of Defects Investigations (ODI) opened PE20-011 to investigate instances of metal fuel lines under the vehicle corroding and leaking fuel in model year (MY) 2008 through 2010 Chevrolet Cobalt and 2008 through 2009 Chevrolet HHR passenger cars manufactured by General Motors (GM). The metal fuel lines are corroding and leaking fuel in the area between the front and rear wheels on the driver's side of the vehicle before the muffler. Most consumers allege a fuel odor and/or an observable fuel leak that alerts them to the condition.The subject metal fuel lines have a protective AGE coating and, in the vicinity of the left rear wheel, are further wrapped in a foil heat shield. The AGE coating consists of an annealed zinc aluminum alloy metal coating with extended corrosion protection paint. Under certain conditions, water and corrosive road deicing agents may enter a crevice between the heat shield and the AGE coating. With extended environmental exposure in high corrosive environments, the AGE coating can degrade. If it degrades enough, the base metal lines may begin to corrode beneath the heat shield.Corrosion to the fuel lines may eventually cause a perforation to develop in the line, allowing fuel vapors to escape from between the line and the heat shield, emitting a fuel odor that will be detectable to the vehicle operator. If the corrosion progresses, fuel may begin to weep from the line. Further metal degradation due to corrosion could create a drip or a mist of fuel. If this occurs, vehicle owners may see drips, spots, or puddles on the ground near the rear portion of the vehicle, primarily along the driver's side rear wheel.The majority of allegations (85%) were reported for vehicles that are operated in the salt belt region of the United States. This area includes states in the Northeast, mid-Atlantic, and Midwest regions. Additionally, the average failure mileage in the subject vehicles is approximately 111,000 across all data sources.Considering the low manufacturer complaint/warranty rates of fuel line replacement, the fact that the majority of failures are concentrated in salt belt states, high failure mileages, as well as the field exposure time for the subject vehicles, and the highly detectable and progressive nature of this failure over time, the potential safety consequences of this issue are very low. To date, there have been no reported crashes, injuries, or fatalities related to this issue. There are two reported fires in ODI data and no reported fires in GM data. Both ODI reported fires were minor, occurred after the vehicle was parked, and were extinguished utilizing fire extinguishers.In view of the progressive failure occurring at high mileages, the age of the subject vehicles, the high detectability of the leak, and the majority of failures occurred in salt belt states, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances.Review the ODI reports cited above at nhtsa.gov under the attached identification numbers.