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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

Service Brakes, Hydraulic complaints

40 reports
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109,000 miles · Aug 24, 2012
Electrical SystemService Brakes, HydraulicSteering

THIS CAR IS A SAFETY HAZARD GOING DOWN ROAD. I BOUGHT IT NEW IN 2008. ROTORS & BRAKES ARE HORRIBLE - HAVE TO HAVE REPAIRED MULTIPLE TIMES. BEARINGS HAVE WENT OUT, REPLACED & ONE WENT OUT AGAIN. I SPEND APPROX 1200 DOLLARS A YEAR JUST TO GET SHAKING OUT OF FRONT END, TURNING ROTORS & TIRES. BUT THAT ISN'T REALLY THE PROBLEM …

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THIS CAR IS A SAFETY HAZARD GOING DOWN ROAD. I BOUGHT IT NEW IN 2008. ROTORS & BRAKES ARE HORRIBLE - HAVE TO HAVE REPAIRED MULTIPLE TIMES. BEARINGS HAVE WENT OUT, REPLACED & ONE WENT OUT AGAIN. I SPEND APPROX 1200 DOLLARS A YEAR JUST TO GET SHAKING OUT OF FRONT END, TURNING ROTORS & TIRES. BUT THAT ISN'T REALLY THE PROBLEM I AM REPORTING: WAS HAVING TROUBLE WITH IGNITION SWITCH - IT WAS RECALLED - TOOK IT TO DEALER TO HAVE IT REPLACED - UNDERSTAND THAT I WAS HAVING NO PROBLEMS WITH CAR AT THIS TIME - UPON LEAVING DEALERS AND WITHIN 15 MILES POWER STEERING LIGHT COMES ON & I LOSE POWER STEERING. NOW MY POWER STEERING GOES OUT UNEXPECTEDLY WHENEVER IT DECIDES TO. TOOK BACK TO DEALER BECAUSE I FELT THIS WAS SOMETHING THEY MESSED UP AND WAS TOLD THIS IS JUST A PROBLEM WITH HHRS AND THAT POWER STEERING MOTOR NEEDS TO BE REPLACED. AFTER RESEARCHING THIS...IT IS VERY COMMON WITH THIS CAR, ALONG WITH BRAKE ISSUES, SEVERE SHAKING IN FRONT, BEARINGS GOING OUT AND MANY OTHER PROBLEMS THAT I HAVE ALSO HAD. I REALIZE MY CAR IS HIGH MILEAGE, I WORK AS A HOME HEALTH NURSE & USE THIS CAR FOR WORK, BUT I DO KEEP IT MAINTAINED. I HOPE THAT I WILL BE ABLE TO GET INTO DIFFERENT CAR BEFORE I GET IN ACCIDENT IN THIS ONE. *TR

NHTSA ODI #10472404

59,000 miles · May 4, 2012
Service Brakes, Hydraulic

TL* THE CONTACT OWNS A 2008 CHEVROLET HHR. WHILE APPLYING THE BRAKES AT A SPEED OF 25 MPH, THE CONTACT NOTICED THAT THE FRONT END OF THE VEHICLE BEGAN TO SHAKE VIOLENTLY. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE FRONT ROTORS WERE REPLACED. THE FAILURE RECURRED TWO WEEKS AFTER THE REPAIR. THE RECENT FAILURE WAS NOT REPAIRED.…

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TL* THE CONTACT OWNS A 2008 CHEVROLET HHR. WHILE APPLYING THE BRAKES AT A SPEED OF 25 MPH, THE CONTACT NOTICED THAT THE FRONT END OF THE VEHICLE BEGAN TO SHAKE VIOLENTLY. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE FRONT ROTORS WERE REPLACED. THE FAILURE RECURRED TWO WEEKS AFTER THE REPAIR. THE RECENT FAILURE WAS NOT REPAIRED. THE CURRENT AND FAILURE MILEAGES WERE 59,000.

NHTSA ODI #10457474

65,000 miles · Apr 20, 2012
Service Brakes, HydraulicWheels

WHEN BRAKING TO COME TO A STOP THE BRAKES/WHEELS SHUTTER AND SHAKE VIOLENTLY. *JS

NHTSA ODI #10455913

41,000 miles · Aug 2, 2011
EquipmentService Brakes, Hydraulic

I PURCHASED A 2008 CHEVROLET HHR IN 2009 WITH 40,000 MILES ON IT. I NOTICED BRAKING/SHAKING PROBLEM. DEALER FIXED IT THE DAY AFTER I BOUGHT IT. UNDER 500 MILES LATER, BRAKING/SHAKING STARTS AGAIN. DIFFERENT DEALER TURNS ROTORS TWO MORE TIMES. PADS ARE WEARING EVENLY, SO THE DEALER MECHANIC ADVISED ME TO PURCHASE AFTER-MARKET ROT…

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I PURCHASED A 2008 CHEVROLET HHR IN 2009 WITH 40,000 MILES ON IT. I NOTICED BRAKING/SHAKING PROBLEM. DEALER FIXED IT THE DAY AFTER I BOUGHT IT. UNDER 500 MILES LATER, BRAKING/SHAKING STARTS AGAIN. DIFFERENT DEALER TURNS ROTORS TWO MORE TIMES. PADS ARE WEARING EVENLY, SO THE DEALER MECHANIC ADVISED ME TO PURCHASE AFTER-MARKET ROTORS AS THE OEM DO NOT APPEAR TO RESIST WARPING VERY WELL. WHEN THE DEALER'S MECHANIC RECOMMENDS PUTTING ON A NON-DEALER PART, THERE HAS GOT TO BE SOMETHING WRONG WITH THE ENGINEERING OF THE CAR OR THE INTEGRITY OF THE METAL IN THE ROTORS. THERE ARE MANY COMPLAINTS ON PEOPLE TURNING AND RE-TURNING THESE ROTORS ALL OVER THE WEB, ULTIMATELY LEADING THEM TO REPLACE WITH NON-GM PARTS. *KB

NHTSA ODI #10416734

123,000 miles · Jun 15, 2011
Service Brakes, Hydraulic

FOR THE THIRD TIME SINCE PURCHASING THIS VEHICLE, I HAVE HAD TO HAVE THE BRAKE ROTORS TURNED DUE TO WARPING. HAD THE PADS REPLACED WITH LIFETIME PADS LAST YEAR. THE WOBBLE CAUSED BY THIS WARPING CAUSES DANGER TO DRIVER, PASSENGERS, AND OTHERS DUE TO DIFFICULTY IN CONTROLLING THE VEHICLE.

NHTSA ODI #10407968

10,000 miles · Dec 27, 2010
Service Brakes, Hydraulic

VERY ROUGH FRONT END VIBRATION AND DIFFICULTY STEERING WHILE BRAKING AT SPEEDS OVER 50MPH. DEALER TURN ROTORS BUT CAME BACK AFTER A FEW THOUSAND MILES. *TR

NHTSA ODI #10372495

5,000 miles · Aug 18, 2010
Service Brakes, Hydraulic

BRAKES SHUDDER IN FRONT WHEN MODERATE APPLICATION AT HIGHWAY SPEED 120KPH - DEALER FIX IS HAVING ROTORS MACHINED BUT EVERY TIME THEY DO THAT THEY GET THINNER AND HEAT UP QUICKER THEREFORE WARP QUICKER. THIS TIME THEY HAD TO REPLACE ROTORS AND MACHINED REAR DRUM BECAUSE I LITERALLY HAD TO YOU USE THE PARKING BRAKE TO STOP ON THE …

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BRAKES SHUDDER IN FRONT WHEN MODERATE APPLICATION AT HIGHWAY SPEED 120KPH - DEALER FIX IS HAVING ROTORS MACHINED BUT EVERY TIME THEY DO THAT THEY GET THINNER AND HEAT UP QUICKER THEREFORE WARP QUICKER. THIS TIME THEY HAD TO REPLACE ROTORS AND MACHINED REAR DRUM BECAUSE I LITERALLY HAD TO YOU USE THE PARKING BRAKE TO STOP ON THE HIGHWAY TO GET BACK HOME FROM OUR TRIP. I'M A LICENSED MECHANIC AND HAVE NEVER SEEN SUCH POOR PERFORMANCE IN BRAKES, MY SOLUTION WOULD BE TO INSTALL DISC BRAKES ON THE REAR AXLE TO IMPROVE THE PERFORMANCE IN BRAKING. THIS PROBLEM STARTED AT SINCE CAR WAS PURCHASED 2008 FIRST OCCURRENCE WAS AT 5K (KM) NEW ROTORS WERE PUT IN AT 45K (KM). PLEASE RECALL THESE BRAKES. *TR

NHTSA ODI #10350258

20,100 miles · Jul 13, 2010
Service Brakes, Hydraulic

VERY ROUGH FRONT END VIBRATION AND DIFFICULTY STEERING WHILE BRAKING DOWNHILL. THIS IS THE "SECOND TIME" THIS HAS OCCURED AND I NOTIFIED MY DEALERSHIP. DEALERSHIP RE-CUT MY ROTORS "DUE TO RUST ON ROTORS". *TR

NHTSA ODI #10342934

13,500 miles · Jul 13, 2010
Service Brakes, Hydraulic

VERY ROUGH FRONT END VIBRATION AND DIFFICULTY STEERING WHILE BRAKING DOWNHILL. THIS FIRST NOTICED AND NOTIFIED MY DEALERSHIP. DEALERSHIP CUT MY ROTORS "DUE TO WARPING". *TR

NHTSA ODI #10342931

7,500 miles · May 27, 2010
Service Brakes, HydraulicSteering

BRAKE ROTORS WARPED AND THE CAR WOULD SHAKE WITH SUCH A SEVERE FORCE CONTROLLING THE CAR WAS VERY HARD. AFTER THE DEALER REPLACED FOUR SETS, BEFORE THE CAR HAD 50,000 MILES ON IT, THE DEALER TOLD ME THAT THE BRAKE PADS WERE WORN OUT AND THAT WOULD CAUSE THIS TO HAPPEN AGAIN. JUST BEFORE THE LAST ROTORS WERE, REPLACED THE ELECTRI…

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BRAKE ROTORS WARPED AND THE CAR WOULD SHAKE WITH SUCH A SEVERE FORCE CONTROLLING THE CAR WAS VERY HARD. AFTER THE DEALER REPLACED FOUR SETS, BEFORE THE CAR HAD 50,000 MILES ON IT, THE DEALER TOLD ME THAT THE BRAKE PADS WERE WORN OUT AND THAT WOULD CAUSE THIS TO HAPPEN AGAIN. JUST BEFORE THE LAST ROTORS WERE, REPLACED THE ELECTRIC POWER STEERING WOULD CEASE WORKING AND EFFECTIVELY HINDER OUR ABILITY TO STEER THE CAR. THE ELECTRIC POWER STEERING IS STILL A PROBLEM DAILY AT DIFFERENT TIMES. I AM GOING TO CHECK INTO THE REPAIR PROCESS SOON. I FEEL THAT THIS PROBLEM IS CAUSED BY THE ROTORS WARPING AND SHAKING THE FRONT END EQUIPMENT OF THE HHR. IN CLOSING, I REPLACED THE PADS AND THEY WERE NOT WORN OUT. I KEPT THEM FOR FUTURE REFERENCE. *TR

NHTSA ODI #10332566

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.