← New search

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

Electrical System complaints

108 reports
Clear category filter
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…

Read full complaint

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

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

18,886 miles · Dec 3, 2008
Electrical System

JUST BOUGHT AN 2008 HHR 18000 MILES ON IT DROVE IT HOME THEN WENT TO GO OUT AND NOW THE IGNITION KEY WON'T TURN. KEY JUST GOES IN AND OUT. THE 800 SERVICE PEOPLE NO HELP JUST SAID JIGGLE KEYS AND KEEP TURNING THE STEERING WHEEL TO GET THE KEY TO TURN... ANY ANSWERS OUT THERE??? THINK THEY NEED A RECALL AFTER READING SO MANY PROB…

Read full complaint

JUST BOUGHT AN 2008 HHR 18000 MILES ON IT DROVE IT HOME THEN WENT TO GO OUT AND NOW THE IGNITION KEY WON'T TURN. KEY JUST GOES IN AND OUT. THE 800 SERVICE PEOPLE NO HELP JUST SAID JIGGLE KEYS AND KEEP TURNING THE STEERING WHEEL TO GET THE KEY TO TURN... ANY ANSWERS OUT THERE??? THINK THEY NEED A RECALL AFTER READING SO MANY PROBLEMS THE HHR IGNITION SWITCH HAS... SOME EVEN SAY THEY CAN'T GET IT TO SHUTOFF AND THEY KEYS ARE STUCK. *TR

NHTSA ODI #10250567

680 miles · Nov 24, 2008
Electrical SystemService Brakes, Hydraulic

AFTER PURCHASE OF A NEW 2008 HHR ON 22 SEPTEMBER 2008, I DROVE THE VEHICLE HOME AND UPON GETTING INTO IT THE NEXT MORNING I BACKED OUT OF MY GARAGE AND NOTICE A VERY SOFT BRAKE PEDAL. I THEN STARTED DOWN THE DRIVE WAY AND WHEN ATTEMPTING TO STOP AT THE STREET THE VEHICLE'S BRAKES WOULD NOT COMPLY WITH MY BRAKE PRESSURE AND THE …

Read full complaint

AFTER PURCHASE OF A NEW 2008 HHR ON 22 SEPTEMBER 2008, I DROVE THE VEHICLE HOME AND UPON GETTING INTO IT THE NEXT MORNING I BACKED OUT OF MY GARAGE AND NOTICE A VERY SOFT BRAKE PEDAL. I THEN STARTED DOWN THE DRIVE WAY AND WHEN ATTEMPTING TO STOP AT THE STREET THE VEHICLE'S BRAKES WOULD NOT COMPLY WITH MY BRAKE PRESSURE AND THE VEHICLE PROCEEDED INTO THE STREET. THIS BECAME A ROUTINE SITUATION UPON "COLD STARTUP'S" AND WHEN REPORTED TO THE DEALER,(JOHN DONOGHUE CHEVROLET, WHITEVILLE, NC) AFTER SEVERAL POOR STOPS, MY SALESMAN ADVISED "YEAH WE KNOW ABOUT IT AS WE'VE HAD THE SAME PROBLEM ON 2008 SOLSTICES". WHEN CONFRONTED WITH A POSSIBLE FIX HE ADVISED THAT " A PART ON THE TURBO FIXES THE PROBLEM." I MADE ARRANGEMENTS TO HAVE THE CAR SERVICED UPON MY RETURN FROM VACATION ON OR ABOUT 26 OCT 08. I DROPPED THE CAR OFF WITH THE SERVICE WRITER/MANAGER AND NO MENTION WAS MADE AS TO POTEN TIAL PROBLEMS FIXING THE CAR. UPON MY RETURN SEVERAL HOURS LATER I WAS ADVISED BY THE SERVICE MANAGER THAT THE PROBLEM IS SYSTEMIC TO 2008 TURBO ENGINES AND GENERAL MOTORS DOESN'T WANT TO RECALL THE CARS. THE DEALERSHIP SERVICE MANAGER PROVIDED ME WITH A SERVICE BULLETIN THAT GM PUT OUT AS A POTENTIAL "FIX" BUT HE REFUSED TO SERVICE THE CAR. I TOOK THE VEHICLE TO ANOTHER CHEVROLET DEALERSHIP AND THEY READJUSTED THE COMPUTER, PER THE BULLETIN; HOWEVER, THE VEHICLE STILL DOES NOT STOP PROPERLY ON COLD STARTUP. GM CUSTOMER SERVICE PERSONNEL AND THE BULLETIN ADVISED THAT "THEY ARE WORKING ON THE ISSUE." *TR

NHTSA ODI #10249736

12,247 miles · Nov 11, 2008
Electrical SystemInjury

CHEVY HHR 2008 - COMPLETE ELECTRICAL FAILURE WHILE ATTEMPTING TO ENTER TRAFFIC FROM HOME DEPOT PARKING LOT. COULDN'T UNLOCK DOORS OR WINDOW TO ESCAPE VEHICLE. CALLED 911 FAIRFIELD CT, FIRE DEPT RESPONDED TO OPEN VEHICLE. TRAPPED INSIDE FOR 15 MINUTES. PROBLEM WITH CAR'S FUSE BOX, CUTTING OFF ALL ELECTRICAL POWER JUST 10 MIN…

Read full complaint

CHEVY HHR 2008 - COMPLETE ELECTRICAL FAILURE WHILE ATTEMPTING TO ENTER TRAFFIC FROM HOME DEPOT PARKING LOT. COULDN'T UNLOCK DOORS OR WINDOW TO ESCAPE VEHICLE. CALLED 911 FAIRFIELD CT, FIRE DEPT RESPONDED TO OPEN VEHICLE. TRAPPED INSIDE FOR 15 MINUTES. PROBLEM WITH CAR'S FUSE BOX, CUTTING OFF ALL ELECTRICAL POWER JUST 10 MINUTES EARLIER TRAVELING AT 60 MPH ON I-95. *TR

NHTSA ODI #10248416

Mileage unknown · Aug 1, 2008
Electrical SystemEngine And Engine CoolingEquipment

2008 CHEVY HHR WITH A BURNING HAIR ODOR INTERMITTENTLY. CONSUMER STATES THAT THE VEHICLE ALSO STOPPED RUNNING. SHE STATES THAT WHEN IT SHUT OFF HE HAD NO BRAKES OR STEERING. *KB THE CONSUMER ALSO STATED THERE WAS A PROBLEM WITH THE SPEAKERS. *JB

NHTSA ODI #10237137

3,000 miles · Feb 27, 2008
Electrical SystemFire

TL*THE CONTACT OWNS A 2008 CHEVROLET HHR. THE CONTACT'S VEHICLE CAUGHT FIRE WHILE PARKED AT HIS RESIDENCE. THE FIRE DEPARTMENT STATED THAT THE FIRE ORIGINATED FROM THE BATTERY COMPARTMENT, LOCATED DIRECTLY ABOVE THE FUEL SYSTEM. A FIRE REPORT WAS FILED. THE MANUFACTURER WAS NOTIFIED AND THE CONTACT IS WAITING FOR AN INVESTIG…

Read full complaint

TL*THE CONTACT OWNS A 2008 CHEVROLET HHR. THE CONTACT'S VEHICLE CAUGHT FIRE WHILE PARKED AT HIS RESIDENCE. THE FIRE DEPARTMENT STATED THAT THE FIRE ORIGINATED FROM THE BATTERY COMPARTMENT, LOCATED DIRECTLY ABOVE THE FUEL SYSTEM. A FIRE REPORT WAS FILED. THE MANUFACTURER WAS NOTIFIED AND THE CONTACT IS WAITING FOR AN INVESTIGATOR TO INSPECT THE VEHICLE. HE HAS PICTURES OF THE VEHICLE IN ITS CURRENT CONDITION. THE CURRENT AND FAILURE MILEAGES WERE 3,000.

NHTSA ODI #10219325

206 miles · Jan 9, 2008
Electrical System

TL*THE CONTACT OWNS A 2008 CHEVROLET HHR. THE INSTRUMENT PANEL DOES NOT INDICATE WHEN THE DOORS ARE AJAR. THE DOORS LOCK; HOWEVER, THE INSTRUMENT PANEL DOES NOT WARN THAT THE DOORS ARE NOT CLOSED COMPLETELY. THE DEALER AND MANUFACTURER STATED THAT NOTHING COULD BE DONE. THE FAILURE MILEAGE WAS 206 AND CURRENT MILEAGE IS 3,10…

Read full complaint

TL*THE CONTACT OWNS A 2008 CHEVROLET HHR. THE INSTRUMENT PANEL DOES NOT INDICATE WHEN THE DOORS ARE AJAR. THE DOORS LOCK; HOWEVER, THE INSTRUMENT PANEL DOES NOT WARN THAT THE DOORS ARE NOT CLOSED COMPLETELY. THE DEALER AND MANUFACTURER STATED THAT NOTHING COULD BE DONE. THE FAILURE MILEAGE WAS 206 AND CURRENT MILEAGE IS 3,100. UPDATED 01/29/08 *BF

NHTSA ODI #10214298

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.