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2009 Chevrolet Hhr

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2009 Chevrolet Hhr do not stand out strongly from the model-year median of 565.5.

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When problems were reported

Mileage at the reported incident

408 reports with mileage · 100 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 151 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Steering. Review the 127 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Air Bags. Review the 104 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

20 crash reports7 fire reports18 injury reports

Fuel System, Gasoline complaints

16 reports
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136,440 miles · Oct 31, 2024
Fuel System, GasolineFuel System, OtherFuel/propulsion System

The contact owns a 2009 Chevrolet HHR. The contact stated that there was a fuel leak near the driver's side rear door. The contact stated that the TPMS, ESC, and check engine warning lights were illuminated. The contact researched online and determined that the failure was related to NHTSA Action Number: PE20011 (FUEL SYSTEM, OT…

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The contact owns a 2009 Chevrolet HHR. The contact stated that there was a fuel leak near the driver's side rear door. The contact stated that the TPMS, ESC, and check engine warning lights were illuminated. The contact researched online and determined that the failure was related to NHTSA Action Number: PE20011 (FUEL SYSTEM, OTHER, FUEL/PROPULSION SYSTEM, FUEL SYSTEM, GASOLINE). The contact called the local dealer and was informed there were no recalls on the VIN. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 136,440.

NHTSA ODI #11622868

110,000 miles · Oct 16, 2024
Fuel System, Gasoline

The contact owns a 2009 Chevrolet HHR. The contact stated that while the vehicle was parked, and while driving the vehicle, there was a strong fuel odor coming from the vehicle. Additionally, the contact noticed that the vehicle was experiencing excessive fuel consumption. The contact also noticed that fuel had leaked onto the g…

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The contact owns a 2009 Chevrolet HHR. The contact stated that while the vehicle was parked, and while driving the vehicle, there was a strong fuel odor coming from the vehicle. Additionally, the contact noticed that the vehicle was experiencing excessive fuel consumption. The contact also noticed that fuel had leaked onto the ground. The contact stated that upon inspecting the vehicle, the contact noticed that fuel was leaking from the driver's side rear wheel well, where the fuel tank was located. The contact related the failure NHTSA Action Number: PE20011(Fuel System, Other, Fuel/Propulsion System, Fuel System, Gasoline). The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not notified of the failure. The failure mileage was approximately 110,000.

NHTSA ODI #11620091

28,000 miles · May 5, 2023
Fuel System, GasolineFire

The contact owns a 2009 Chevrolet HHR. The contact while driving at an undisclosed speed, noticed a strong fuel odor. The contact stated that upon parking and exiting the vehicle, there was fire underneath the rear driver's side, where the fuel tank was located. The contact was able to extinguish the fire with a fire extinguishe…

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The contact owns a 2009 Chevrolet HHR. The contact while driving at an undisclosed speed, noticed a strong fuel odor. The contact stated that upon parking and exiting the vehicle, there was fire underneath the rear driver's side, where the fuel tank was located. The contact was able to extinguish the fire with a fire extinguisher. There was no injury sustained. The contact then noticed a trail of fuel on the floor. The contact became aware that fuel had leaked while driving. The vehicle was towed to an independent mechanic, where it was diagnosed that the fuel line was corroded and needed to be replaced due to a wrong design. The contact stated that the fuel line was designed over the muffler, which caused water intrusion and corrosion. The vehicle was then towed to the dealer, where the fuel line was replaced. The vehicle was repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 28,000.

NHTSA ODI #11520617

28,000 miles · Apr 3, 2023
Fuel System, GasolineFire

The contact owns a 2009 Chevrolet HHR. The contact stated while starting the vehicle, the rear of the vehicle started burning. The contact was able to stop the fire and the contact noticed that the gasoline was leaking onto the ground under the vehicle. No one was injured and no police report was filed. The vehicle was diagnosed…

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The contact owns a 2009 Chevrolet HHR. The contact stated while starting the vehicle, the rear of the vehicle started burning. The contact was able to stop the fire and the contact noticed that the gasoline was leaking onto the ground under the vehicle. No one was injured and no police report was filed. The vehicle was diagnosed by an independent mechanic and the mechanic stated that the fitting to the gasoline trunk was damaged causing the gasoline to leak. The vehicle was repaired. The manufacturer was contacted, and the manufacturer did not provide any assistance. The failure mileage was 28,000

NHTSA ODI #11515168

52,000 miles · Feb 23, 2023
Fuel System, Gasoline

The contact owns a 2009 Chevrolet HHR. The contact stated while the vehicle was parked, he noticed fuel leaking from the rear driver's side of the vehicle. The vehicle was not taken to a dealer or independent mechanic for diagnosis or repairs. A Chevrolet dealer was contacted and confirmed that the VIN was not included in a reca…

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The contact owns a 2009 Chevrolet HHR. The contact stated while the vehicle was parked, he noticed fuel leaking from the rear driver's side of the vehicle. The vehicle was not taken to a dealer or independent mechanic for diagnosis or repairs. A Chevrolet dealer was contacted and confirmed that the VIN was not included in a recall. The contact stated that he was able to look under the vehicle and found that the fuel line was corroded. The contact was relating the failure to an unknown recall for a fuel line that was issued for similar Chevrolet HHR vehicle. The manufacturer was not notified of the failure. The approximate failure mileage was 52,000.

NHTSA ODI #11508726

111,800 miles · Sep 15, 2022
Fuel System, Gasoline

The contact owns a 2009 Chevrolet HHR. The contact stated upon parking and exiting the vehicle, she smelled a strong gasoline odor on the driver's side of the vehicle. There was no warning light illuminated. The contact stated that the failure persisted. The vehicle was taken to the dealer where it was diagnosed that the fuel li…

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The contact owns a 2009 Chevrolet HHR. The contact stated upon parking and exiting the vehicle, she smelled a strong gasoline odor on the driver's side of the vehicle. There was no warning light illuminated. The contact stated that the failure persisted. The vehicle was taken to the dealer where it was diagnosed that the fuel line needed to be replaced. However, the parts were not available. The vehicle was not repaired. The contact referenced NHTSA Action Number: PE20011. The manufacturer was not notified of the failure. The failure mileage was approximately 111,800.

NHTSA ODI #11484705

103,900 miles · Sep 27, 2021
Fuel System, Gasoline

The contact owns a 2009 Chevrolet HHR. The contact noticed that there was a leak coming from the rear driver’s side of the vehicle. Additionally, there was a fuel odor coming from the vehicle. The vehicle was taken to an independent mechanic where it was diagnosed that there was a rusted fuel line. The dealer was not contacted. …

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The contact owns a 2009 Chevrolet HHR. The contact noticed that there was a leak coming from the rear driver’s side of the vehicle. Additionally, there was a fuel odor coming from the vehicle. The vehicle was taken to an independent mechanic where it was diagnosed that there was a rusted fuel line. The dealer was not contacted. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 103,900.

NHTSA ODI #11434510

125,000 miles · Aug 12, 2021
Fuel System, Gasoline

The contact owns a 2009 Chevrolet HHR. The contact stated that while attempting to start the vehicle, the vehicle would not immediately start. The contact later noticed a fuel odor inside the vehicle. The contact discovered a fuel leak coming from the rear driver’s side of the vehicle. The cause of the failure was not determined…

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The contact owns a 2009 Chevrolet HHR. The contact stated that while attempting to start the vehicle, the vehicle would not immediately start. The contact later noticed a fuel odor inside the vehicle. The contact discovered a fuel leak coming from the rear driver’s side of the vehicle. The cause of the failure was not determined. The local dealer was notified of the failure. The manufacturer was not notified of the failure. The failure mileage was 125,000.

NHTSA ODI #11428839

115,000 miles · Apr 13, 2021
Fuel System, Gasoline

TL* THE CONTACT OWNS A 2009 CHEVROLET HHR. THE CONTACT STATED THAT WHEN SHE STARTED THE VEHICLE, A FUEL ODOR WAS DETECTED. THE CONTACT LATER SAW GAS LEAKING FROM NEAR THE REAR DRIVER'S SIDE TIRE ONTO HER DRIVEWAY. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE DEALER AND MANUFACTURER WERE NOT MADE AWARE OF THE FAILURE. THE FAIL…

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TL* THE CONTACT OWNS A 2009 CHEVROLET HHR. THE CONTACT STATED THAT WHEN SHE STARTED THE VEHICLE, A FUEL ODOR WAS DETECTED. THE CONTACT LATER SAW GAS LEAKING FROM NEAR THE REAR DRIVER'S SIDE TIRE ONTO HER DRIVEWAY. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE DEALER AND MANUFACTURER WERE NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 115,000.

NHTSA ODI #11407964

75,000 miles · Aug 24, 2020
Fuel System, Gasoline

TL* THE CONTACT OWNS A 2009 CHEVROLET HHR. THE CONTACT STATED THAT AN ABNORMAL SMELL OF FUEL EMITTED FROM THE VEHICLE. THE CONTACT LOOKED UNDERNEATH THE VEHICLE AND NOTICED THAT THE FUEL LINE WAS RUSTED AND LEAKING FUEL ONTO THE FRONT DRIVER'S SIDE AND BY THE REAR WHEEL. THE DEALER WAS NOT MADE AWARE OF THE FAILURE. THE MANUFACT…

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TL* THE CONTACT OWNS A 2009 CHEVROLET HHR. THE CONTACT STATED THAT AN ABNORMAL SMELL OF FUEL EMITTED FROM THE VEHICLE. THE CONTACT LOOKED UNDERNEATH THE VEHICLE AND NOTICED THAT THE FUEL LINE WAS RUSTED AND LEAKING FUEL ONTO THE FRONT DRIVER'S SIDE AND BY THE REAR WHEEL. THE DEALER WAS NOT MADE AWARE OF THE FAILURE. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 75,000. *AS

NHTSA ODI #11350882

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.

14V153000 · Steering:electric Power Assist System

Mar 31, 2014

General Motors LLC (GM) is recalling certain model year 2004-2006 and 2008-2009 Chevrolet Malibu, 2004-2006 Malibu Maxx, 2009-2010 HHR (non-turbo), 2010 Cobalt, 2008-2009 Saturn Aura and 2004-2007 Ion, and 2005-2009 Pontiac G6. In the affected vehicles, there may be a sudden loss of electric power steering (EPS) assist that could occur at any time while driving.

Consequence & remedy

Consequence: If power steering assist is lost, greater driver effort would be required to steer the vehicle at low speeds, increasing the risk of a crash.

Remedy: GM will notify owners, and dealers will perform one of four bulletins. Parts are not currently available. GM expects to send an interim notification around May 28, 2014. When parts are available, owners will be mailed a second letter to come in to have the applicable bulletin applied. Bulletin 14115 covers model year 2004-2007 Saturn Ion, 2009-2010 Chevrolet HHR and 2010 Chevrolet Cobalts. Dealers will replace the EPS motor. Bulletin 14116 covers model year 2004-2006 Chevrolet Malibu and Malibu Maxx, 2005-2006 Pontiac G6 and 2008-2009 Chevrolet Malibu, Pontiac G6 and Saturn Aura built from March 1, 2008, through June 27, 2008. Dealers will replace the torque sensor assembly. Bulletin 14117 covers model year 2008 Chevrolet Malibu, Pontiac G6 and Saturn Aura built from February 1, 2008, through February 28, 2008. Dealers will replace the torque sensor assembly and EPS motor controller unit. Bulletin 14118 covers model year 2008 Chevrolet Malibu, Pontiac G6 and Saturn Aura built from October 1, 2007, through January 31, 2008. Dealers will replace the EPS motor controller unit. The recall began on July 17, 2014. Owners may contact Chevrolet at 1-800-630-2438, Saturn at 1-800-553-6000, and Pontiac at 1-800-620-7668. GM's number for this recall is N140115. Note: GM bulletin number 14119 will be implemented for model year 2006-2008 and early production of 2009 Chevrolet HHR (non-turbo) and model year 2003 Saturn ION to provide EPS Motor replacement for the life of the vehicle.

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.

09V073000 · Power Train:automatic Transmission:lever And Linkage:column Shift

Mar 6, 2009

GENERAL MOTORS IS RECALLING 276,729 MY 2009 BUICK ENCLAVE, CHEVROLET COBALT, HHR, MALIBU, TRAVERSE, GMC ACADIA, PONTIAC G5, G6 AND SATURN AURA AND OUTLOOK PASSENGER VEHICLES. THESE VEHICLES FAIL TO COMPLY WITH FEDERAL MOTOR VEHICLES SAFETY STANDARD 102, "TRANSMISSION SHIFT POSITION SEQUENCE, STARTER INTERLOCK, AND TRANSMISSION BRAKING EFFECT", AND FMVSS 114, "THEFT PROTECTION AND ROLLAWAY PREVENTION". ON SOME OF THESE VEHICLES, THE TRANSMISSION SHIFT CABLE ADJUSTMENT CLIP MAY NOT BE FULLY ENGAGED. IF THE CLIP IS NOT FULLY ENGAGED, THE SHIFT LEVER AND THE ACTUAL POSITION OF THE TRANSMISSION GEAR MAY NOT MATCH. WITH THIS CONDITION, THE DRIVE COULD MOVE THE SHIFTER TO "PARK" AND REMOVE THE IGNITION KEY, BUT THE TRANSMISSION GEAR MAY NOT BE IN "PARK".

Consequence & remedy

Consequence: THE DRIVER MAY NOT BE ABLE TO RESTART THE VEHICLE AND THE VEHICLE COULD ROLL AWAY AFTER THE DRIVER HAS EXITED THE VEHICLE, RESULTING IN A POSSIBLE CRASH WITHOUT PRIOR WARNING.

Remedy: DEALERS WILL INSPECT AND ENSURE THAT THE SHIFT CABLE ADJUSTMENT CLIP IS FULLY ENGAGED. IN THE EVENT THAT THE CLIP DOES NOT ENGAGE, THE SHIFT CABLE WILL BE REPLACED FREE OF CHARGE. THE RECALL IS EXPECTED TO BEGIN ON OR BEFORE MARCH 24, 2009. OWNERS MAY CONTACT BUICK AT 1-866-608-8080, CHEVROLET AT 1-800-630-2438, GMC AT 1-866-996-9463, PONTIAC AT 1-800-620-7668 AND SATURN AT 1-800-972-8876 OR AT WWW.GMOWNERCENTER.COM.

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.