NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
40 reportsClear category filter5,200 miles · Aug 25, 2008
Service Brakes, Hydraulic
2008 HHR SS, ON STARTUP, POWER ASSIST BRAKES DO NOT FUNCTION PROPERLY FOR 30-90 SECONDS, AFTER WHICH THEY WORK PROPERLY. THIS WAS FIRST IDENTIFIED WHEN I STARTED MY VEHICLE AND BEGAN EXITING MY DRIVEWAY THE OTHER DAY. A DOG RAN IN FRONT OF MY CAR, AND I HAD TO APPLY AN EXCEPTIONAL AMOUNT OF FORCE TO THE BRAKES TO KEEP FROM HIT…
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2008 HHR SS, ON STARTUP, POWER ASSIST BRAKES DO NOT FUNCTION PROPERLY FOR 30-90 SECONDS, AFTER WHICH THEY WORK PROPERLY. THIS WAS FIRST IDENTIFIED WHEN I STARTED MY VEHICLE AND BEGAN EXITING MY DRIVEWAY THE OTHER DAY. A DOG RAN IN FRONT OF MY CAR, AND I HAD TO APPLY AN EXCEPTIONAL AMOUNT OF FORCE TO THE BRAKES TO KEEP FROM HITTING THE ANIMAL. AFTER SOME WEB RESEARCH (SEE ESPECIALLY HTTP://WWW.CHEVYHHR.NET/FORUMS/SHOWTHREAD.PHP?T=17740), IT APPEARS THAT THIS IS A COMMON PROBLEM FOR THE VEHICLE, AND SO I BELIEVE IT IS IMPORTANT THAT YOU INTERVENE ON BEHALF OF PUBLIC SAFETY TO GET GENERAL MOTORS TO RESOLVE THE ISSUE QUICKLY. *TR
NHTSA ODI #10239726
325 miles · Aug 25, 2008
Service Brakes, Hydraulic
2008 HHR SS TURBO - DEALER REPLACED PREVIOUS 2008 HHR SS TURBO THAT HAD BRAKING ISSUES AT 200 MILE. THIS NEW CAR HAS SAME EXACT PROBLEM. AT STARTUP AFTER THE CAR HAS BEEN SITTING FOR ABOUT 10 HOURS THE BRAKES DO NOT HAVE ENOUGH VACUUM INORDER TO WORK PROPERLY. YOU HAVE TO WAIT ABOUT 120 SECONDS BEFORE THERE ENOUGH VACUUM TO EN…
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2008 HHR SS TURBO - DEALER REPLACED PREVIOUS 2008 HHR SS TURBO THAT HAD BRAKING ISSUES AT 200 MILE. THIS NEW CAR HAS SAME EXACT PROBLEM. AT STARTUP AFTER THE CAR HAS BEEN SITTING FOR ABOUT 10 HOURS THE BRAKES DO NOT HAVE ENOUGH VACUUM INORDER TO WORK PROPERLY. YOU HAVE TO WAIT ABOUT 120 SECONDS BEFORE THERE ENOUGH VACUUM TO ENGAGE THE BRAKES. UNTIL ENOUGH VACUUM IS PRESENT THE BRAKES FAIL TO STOP THE VEHICLE ON ANY KIND OF MINIMAL SLOPE. DEALER HAS UPGRADED THE SOFTWARE PER THE MANUFACTURER RECOMMENDATION BUT THE PROBLEM STILL EXISTS. DEALER RECOMMEND THAT THE USER SIT FOR 60 SECONDS BEFORE REMOVING THE VEHICLE FROM PARK. THIS IS UNACCEPTABLE AND A SAFETY HAZARD. I HAVE TRIED TWO SEPARATE VEHICLES THAT ARE IDENTICAL AND THEY BOTH HAVE THE SAME PROBLEM. THE IS A FIX FOR THE SATURN SKY AND PONTIAC SOLSTICE I AM TOLD BUT NONE FOR THE CHEVY. *TR
NHTSA ODI #10239610
225 miles · Aug 14, 2008
Service Brakes, Hydraulic
2008 HHR SS WITH 200 MILES, BRAKES FAIL TO WORK AT ALL WHEN CAR IS FIRST STARTED IN THE MORNINGS. DEALER FINDS NO PROBLEM. ANTI-LOCK BRAKES ENGAGE BUT DO NOT WORK. DEALER HAS REPROGRAMMED THE COMPUTER WITH THE SAME PROBLEM STILL EXISTING. THIS IS A MAJOR DEFECT. DEALER INSTRUCTED US TO DRIVE THE VEHICLE TO GET FIXED. WE HAD I…
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2008 HHR SS WITH 200 MILES, BRAKES FAIL TO WORK AT ALL WHEN CAR IS FIRST STARTED IN THE MORNINGS. DEALER FINDS NO PROBLEM. ANTI-LOCK BRAKES ENGAGE BUT DO NOT WORK. DEALER HAS REPROGRAMMED THE COMPUTER WITH THE SAME PROBLEM STILL EXISTING. THIS IS A MAJOR DEFECT. DEALER INSTRUCTED US TO DRIVE THE VEHICLE TO GET FIXED. WE HAD IT TOWED. *TR
NHTSA ODI #10238125
1,500 miles · Aug 13, 2008
Service Brakes, Hydraulic
I HAVE A 2008 CHEVY HHR SS WITH 13000 MILES ON IT. I HAVE HAD IT IN THE SHOP THREE TIMES FOR BRAKES NOT WORKING. THE PROBLEMS ARE THAT THE PADS COMING DELAMINATED AND THE TURBO PULLING THE VACUUM FROM THE BRAKES. AFTER CHECKING ON VARIOUS WEB SITES LIKE EDMONDS, I HAVE FOUND THAT THIS IS COMMON PROBLEM. *TR
NHTSA ODI #10238095
1,200 miles · Aug 13, 2008
Service Brakes, Hydraulic
BRAKES ARE HARD ON COLD START ON MY 2008 CHEVROLET HHR SS TURBO. ALMOST HAD AN ACCIDENT BECAUSE OF THIS. IT'S IN FOR THE SECOND TIME BECAUSE THEIR PROGRAMMING DIDN'T WORK. I HEARD THAT THE PONTIAC SOLSTICE AND SATURN SKY HAS THE SAME PROBLEM. THANK YOU, PAT *TR
NHTSA ODI #10238040
450 miles · Jul 26, 2008
Service Brakes, Hydraulic
WHEN THE VEHICLE SITS OVERNIGHT OR A LONG PERIOD OF TIME THERE WILL BE NO BRAKES OR A VERY HARD PEDDLE WHEN STARTED FOR AT LEAST 30 SEC TO 1 MIN. I ALMOST RAN INTO GARAGE DOOR BUT MANAGED TO STOP THE VEHICLE USING THE EMERGENCY BRAKE. THIS HAS OCCURRED 3 TIMES SINCE I PURCHASED THE VEHICLE 3 WEEKS AGO CURRENT MILEAGE IS 653. VEH…
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WHEN THE VEHICLE SITS OVERNIGHT OR A LONG PERIOD OF TIME THERE WILL BE NO BRAKES OR A VERY HARD PEDDLE WHEN STARTED FOR AT LEAST 30 SEC TO 1 MIN. I ALMOST RAN INTO GARAGE DOOR BUT MANAGED TO STOP THE VEHICLE USING THE EMERGENCY BRAKE. THIS HAS OCCURRED 3 TIMES SINCE I PURCHASED THE VEHICLE 3 WEEKS AGO CURRENT MILEAGE IS 653. VEHICLE HAS BEEN AT THE SERVICE DEPT. 2 TIMES FOR THE TSB BUT NOW THE DEALER AND GM SAYS THEY HAVE NO FIX FOR THIS ISSUE. *TR
NHTSA ODI #10235859
7 miles · Jul 23, 2008
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2008 CHEVROLET HHR SUPER SPORT. EACH MORNING WHILE DRIVING VARIOUS SPEEDS, THE BRAKES DO NOT STOP THE VEHICLE WHEN THE PEDAL IS DEPRESSED. THE VEHICLE HAS BEEN TAKEN TO THE DEALER THREE TIMES FOR THIS FAILURE AND THE CONTACT WAS PROVIDED WITH TSB NUMBER 0805220001. THE CURRENT MILEAGE WAS 3,685 AND FAILU…
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TL*THE CONTACT OWNS A 2008 CHEVROLET HHR SUPER SPORT. EACH MORNING WHILE DRIVING VARIOUS SPEEDS, THE BRAKES DO NOT STOP THE VEHICLE WHEN THE PEDAL IS DEPRESSED. THE VEHICLE HAS BEEN TAKEN TO THE DEALER THREE TIMES FOR THIS FAILURE AND THE CONTACT WAS PROVIDED WITH TSB NUMBER 0805220001. THE CURRENT MILEAGE WAS 3,685 AND FAILURE MILEAGE WAS 7. UPDATED 09/16/08 *BF THE CONSUMER STATED THE PROBLEM ONLY HAPPENED WITH THE FIRST APPLICATION OF THE BRAKES. WHEN GOING DOWNHILL, THE FAILED DID NOT WANT TO STOP WHEN COMING TO A STOP SIGN. UPDATED 09/18/08. *JB
NHTSA ODI #10235440
1,330 miles · Apr 14, 2008
Service Brakes, Hydraulic
HHR SS HAS A HARD PEDAL AND DOES NOT STOP EASILY ON IN A NORMAL DISTANCE. THIS HAS OCCURRED 4 TIMES AFTER SITTING IN COLD WEATHER FOR AN EXTENDED PERIOD. IT TAKES ABOUT A MINUTE OF WARM-UP TO HAVE THE HARD PEDAL-NON BRAKING TO CORRECT TO NORMAL. *TR
NHTSA ODI #10224414
2,500 miles · Mar 18, 2008
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2008 CHEVROLET HHR. WHILE DRIVING 15 MPH, THE CONTACT DEPRESSED THE BRAKE PEDAL, BUT THE VEHICLE KEPT MOVING. THE BRAKE PEDAL STIFFENED. APPROXIMATELY TEN SECONDS LATER, THE VEHICLE STOPPED. THE FAILURE HAS OCCURRED TWELVE TIMES. THE DEALER REPROGRAMMED THE ECM; HOWEVER, THE FAILURE STILL OCCURS. THE …
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TL*THE CONTACT OWNS A 2008 CHEVROLET HHR. WHILE DRIVING 15 MPH, THE CONTACT DEPRESSED THE BRAKE PEDAL, BUT THE VEHICLE KEPT MOVING. THE BRAKE PEDAL STIFFENED. APPROXIMATELY TEN SECONDS LATER, THE VEHICLE STOPPED. THE FAILURE HAS OCCURRED TWELVE TIMES. THE DEALER REPROGRAMMED THE ECM; HOWEVER, THE FAILURE STILL OCCURS. THE DEALER STATED THAT THIS WAS NORMAL FOR THE VEHICLE. THE CURRENT AND FAILURE MILEAGES WERE 2,500.
NHTSA ODI #10221567
8 miles · Mar 12, 2008
Service Brakes, Hydraulic
TL*THE CONTACT OWNS A 2008 CHEVROLET HHR SS. WHEN THE VEHICLE IS STARTED IN COLD WEATHER, THE BRAKING SYSTEM TAKES APPROXIMATELY ONE MINUTE TO FUNCTION. THE BRAKES USE AN OPTIMIZED ASSIST AND THE BRAKES WOULD RESPOND SLOWLY. IT CAUSES THE BRAKES TO RESPOND SLOWLY. THE CONTACT IS CONCERNED THAT THE VEHICLE WILL BE UNABLE TO ST…
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TL*THE CONTACT OWNS A 2008 CHEVROLET HHR SS. WHEN THE VEHICLE IS STARTED IN COLD WEATHER, THE BRAKING SYSTEM TAKES APPROXIMATELY ONE MINUTE TO FUNCTION. THE BRAKES USE AN OPTIMIZED ASSIST AND THE BRAKES WOULD RESPOND SLOWLY. IT CAUSES THE BRAKES TO RESPOND SLOWLY. THE CONTACT IS CONCERNED THAT THE VEHICLE WILL BE UNABLE TO STOP IMMEDIATELY IN THE CASE OF AN EMERGENCY. THE MANUFACTURER IS AWARE OF THE FAILURE, BUT ARE NOT MAKING CONSUMERS AWARE. THE VEHICLE WAS TAKEN BACK TO THE DEALER ON JANUARY 24, 2008 FOR REPAIRS. THE DEALER DID NOT REPLACE ANY COMPONENTS. THE MANUFACTURER WAS NOTIFIED AND STATED THAT THE DEALER COULD REFERENCE THE TSB FOR THAT PARTICULAR FAILURE. THE CONTACT INFORMED THE MANUFACTURER THAT A TSB REPAIR WAS UNACCEPTABLE. THE MANUFACTURER SENT OUT AN INVESTIGATOR, BUT HE COULD NOT RECOMMEND A REPAIR FOR THE FAILURE. THE CURRENT MILEAGE WAS 2,000 AND FAILURE MILEAGE WAS 8. UPDATED 04-03-08 *BF THE CONSUMER STATED WHEN HE FIRST GETS INTO THE VEHICLE, AND PLACES TE VEHICLE INTO REVERSE, THE POWER BRAKES WOULD NOT WORK FOR A SHORT PERIOD OF TIME. THE BRAKE PEDAL IS HARD TO PRESS TO MIDWAY POINT, AND THEN THE BRAKES PULSATE. AFTER THE VEHICLE HAS RAN FOR ABOUT 30 SECONDS TO A MINUTE, THE POWER BRAKES BRAKES BEGAN TO WORK FINE. IT IS ONLY WHEN THE VEHICLE SEETS FOR AN EXTENDED PERIOED OF TIME DOES THE PROBLEM ARISE.
NHTSA ODI #10220955
Official recalls
4Apr 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.
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. GMs 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. GMs 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. GMs 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.
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> .
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
1PE20011 · 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.