Total Complaints
222 filings
CHEVROLET COBALT SS · model year
222 NHTSA complaints, 12 crash reports for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2009CHEVROLETCOBALT SS carries 222 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 12 crashes, 2 fires, 7 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2009 COBALT SS is service brakes, hydraulic with 133 filings, followed by parking brake (18) and service brakes (13). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 57 investigation files overlapping the 2009 COBALT SS, and 2 remain open. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
Total Complaints
222 filings
Crashes Reported
12 reports
Source
NHTSA ODI
Federal complaints database
Above median complaint volume — review patterns below.
| Component | Count |
|---|---|
| SERVICE BRAKES, HYDRAULIC | 133 |
| PARKING BRAKE | 18 |
| SERVICE BRAKES | 13 |
| AIR BAGS | 8 |
| ELECTRICAL SYSTEM | 7 |
| SERVICE BRAKES, ELECTRIC | 6 |
| FUEL/PROPULSION SYSTEM | 6 |
| STEERING | 4 |
| SERVICE BRAKES, AIR | 3 |
| WHEELS | 3 |
| TIRES | 3 |
| ENGINE | 3 |
| POWER TRAIN:MANUAL TRANSMISSION | 2 |
| UNKNOWN OR OTHER | 2 |
| SEAT BELTS | 2 |
I WAS DRIVING THE OTHER DAY AND NOTICED THAT ONE OF MY BACK BRAKES WAS STICKING AND SO I TOOK A LOOK AT IT AND FLUID LEVEL WAS FINE AND THERE WAS NO AIR IN THE BRAKE LINE. I FEEL THE CAUSE OF THIS IS BAD CALIPERS AND SOME OTHERS I HAVE TALKED HAD THE SAME ISSUE.
Mileage: 76,022
FUEL LINE RUSTS THROUGH CAUSING FUEL TO LEAK OUT NEXT TO EXHAUST PIPE. HAPPENS TO EVAP LINE AS WELL. POOR DESIGN IN THE HEAT SHIELDING TRAPS MOISTURE WHICH RUSTS THROUGH THE LINE. FUEL LEAKS OUT WHEN THE CAR IS RUNNING, PARKED, MOVING OR NOT. REAR BRAKE CALIPER STICKS OUT FROM USING THE PARKING BRAKE AND PAD STICKS TO ROTOR CAUSING EXCESSIVE WEAR.
FUEL LINE RUSTS THROUGH CAUSING FUEL TO LEAK OUT NEXT TO EXHAUST PIPE. HAPPENS TO EVAP LINE AS WELL. POOR DESIGN IN THE HEAT SHIELDING TRAPS MOISTURE WHICH RUSTS THROUGH THE LINE. FUEL LEAKS OUT WHEN THE CAR IS RUNNING, PARKED, MOVING OR NOT. REAR BRAKE CALIPER STICKS OUT FROM USING THE PARKING BRAKE AND PAD STICKS TO ROTOR CAUSING EXCESSIVE WEAR.
FUEL LINES UNDER THE CAR, DRIVER SIDE REAR STARTED LEAKING FUEL. THE LINES WERE RUSTED THROUGH AND FUEL LEAKED PAST THE EXHAUST SYSTEM WHERE A POTENTIAL CAR FIRE COULD HAVE HAPPENED IF NOT NOTICED RIGHT AWAY. THE VEHICLE WAS PARKED IN THE GARAGE AND OFF WHEN I NOTICED THE STRONG SCENT OF GAS AND SAW A SMALL PUDDLE OF FUEL UNDER THE CAR. REPAIRS WERE COMPLETED AT PORTER CHEVROLET SERVICE IN NEWARK, DELAWARE. REPAIRS CONSISTED OF REPLACING THE FEED LINE AND FILL LINE. THE ESTIMATE QUOTED WAS $800. REPAIRS ENDED UP COSTING $480.
Mileage: 105,000
CONNECTOR FEEDING POWER TO THE A/C-HEATER BLOWER MELTED; CAUSED A CRACKLING SOUND, A SMELL, AND THE FAN TO STOP WORKING. THE CONNECTOR MELTED TOGETHER. TO GET A PICTURE OF THE PIN THAT FAILED REQUIRED ME TO BREAK THE CONNECTOR. POWER WAS PRESENT ON THE BROWN WIRE AS SOON AS THE IGNITION IS ON - THE BLOWER DID NOT NEED TO BE OPERATING TO GENERATE HEAT AT THE CONNECTOR. THE WIRE LEADING TO THE CONNECTOR WAS DISCOLORED FROM THE HEAT.
Mileage: 73,000
LEAKING FUEL LINES ABOVE EXHAUST. WHERE THE FUEL LINE COMES DOWN OUT OF THE TANK AND RUNS FORWARD, THERE IS A HOLDER THAT WAS WEARING ON THE FUEL LINE AND CAUSED A HOLE AND A LEAK.
Mileage: 73,000
THE PASSENGER SEAT BELT LIGHT STAY ON ALL THE TIME EVERY ONCE IN AWHILE IT MAY GO OFF BUT IT COMES BACK ON
Mileage: 4,700
THE FUEL LINES THAT ARE WRAPPED IN THE HEAT PROTECTIVE TAPE ON THE DRIVER REAR SIDE JUST AS THEY TURN UP TO GO TO THE FUEL TANK ARE RUSTED OUT BECAUSE THE HEAT SHIELD PROTECTOR HOLDS WATER ON THE FUEL LINES AND NOW MINE ARE RUSTED OUT AND LEAKING FUEL ALL OVER THE GROUND BY MY EXHAUST. THIS IS A MAJOR ISSUE THAT HASN'T BEEN ADDRESSED WITH MANY CHEVY PRODUCTS. NOW IT'S GOING TO COST ABOUT $600 TO REPLACE THE LINES. CHEVY IS NOT TAKING RESPONSIBILITY WITH THIS DEFECT AND COSTING PEOPLE MONEY AND PUTTING LIVES IN DANGER BY HAVING A LEAK PRONE LINE RIGHT BY THE HOT EXHAUST. PLEASE TAKE ACTION ON THIS. I HAD AT LEAST A GALLON SPRAY OUT WHILE DRIVING AND IT CONTINUED TO LEAK WHEN PARKED.
Mileage: 122,000
MY AIRBAG LIGHT STARTED RANDOMLY GOING ON AND OFF. I NOTICED THAT IT OFTEN OCCURRED WHEN SOMEONE WAS SITTING IN THE PASSENGER SEAT. I ALSO NOTICED THAT WHEN SOMEONE WAS SITTING IN THE PASSENGER SEAT THE INDICATOR OFTEN INDICATED THAT NO ONE WAS SITTING THERE. THEN AFTER ABOUT A WEEK OF THIS OCCURRING, THE LIGHT AIRBAG REMAINED ON AT ALL TIMES AND THE INDICATOR STATED THAT NO ONE WAS SITTING IN THE PASSENGER SEAT EVEN WHEN SOMEONE WAS. I THEN TOOK MY VEHICLE TO THE DEALERSHIP AND THEY ADVISED THAT IT WAS THE PASSENGER AIRBAG PRESENCE SENSOR AND THAT IT NEEDED TO BE REPLACED. THEY ADVISED THAT IT WOULD COST OVER $1,000. SO OBVIOUSLY I TOLD THEM THAT I COULD NOT AFFORD IT AT THIS TIME. THIS IS A MAJOR SAFETY CONCERN AND SHOULD BE AN IMMEDIATE RECALL. I HAVE SEEN AND READ HUNDREDS OF COMPLAINTS ABOUT THIS EXACT SAME ISSUE ON TWO DIFFERENT COBALT FORUMS, THE NHTSA WEBSITE, AND ON VARIOUS OTHER WEB SITES THAT I ACCESSED THROUGH GOOGLE. IT IS OBVIOUSLY A MANUFACTURERS PROBLEM AND IT NEEDS
Mileage: 80,000
MY AIRBAG LIGHT STARTED RANDOMLY GOING ON AND OFF. I NOTICED THAT IT OFTEN OCCURRED WHEN SOMEONE WAS SITTING IN THE PASSENGER SEAT. I ALSO NOTICED THAT WHEN SOMEONE WAS SITTING IN THE PASSENGER SEAT THE INDICATOR OFTEN INDICATED THAT NO ONE WAS SITTING THERE. THEN AFTER ABOUT A WEEK OF THIS OCCURRING, THE LIGHT AIRBAG REMAINED ON AT ALL TIMES AND THE INDICATOR STATED THAT NO ONE WAS SITTING IN THE PASSENGER SEAT EVEN WHEN SOMEONE WAS. I THEN TOOK MY VEHICLE TO THE DEALERSHIP AND THEY ADVISED THAT IT WAS THE PASSENGER AIRBAG PRESENCE SENSOR AND THAT IT NEEDED TO BE REPLACED. THEY ADVISED THAT IT WOULD COST OVER $1,000. SO OBVIOUSLY I TOLD THEM THAT I COULD NOT AFFORD IT AT THIS TIME. THIS IS A MAJOR SAFETY CONCERN AND SHOULD BE AN IMMEDIATE RECALL. I HAVE SEEN AND READ HUNDREDS OF COMPLAINTS ABOUT THIS EXACT SAME ISSUE ON TWO DIFFERENT COBALT FORUMS, THE NHTSA WEBSITE, AND ON VARIOUS OTHER WEB SITES THAT I ACCESSED THROUGH GOOGLE. IT IS OBVIOUSLY A MANUFACTURERS PROBLEM AND IT NEEDS
Mileage: 80,000
MY AIRBAG LIGHT STARTED RANDOMLY GOING ON AND OFF. I NOTICED THAT IT OFTEN OCCURRED WHEN SOMEONE WAS SITTING IN THE PASSENGER SEAT. I ALSO NOTICED THAT WHEN SOMEONE WAS SITTING IN THE PASSENGER SEAT THE INDICATOR OFTEN INDICATED THAT NO ONE WAS SITTING THERE. THEN AFTER ABOUT A WEEK OF THIS OCCURRING, THE LIGHT AIRBAG REMAINED ON AT ALL TIMES AND THE INDICATOR STATED THAT NO ONE WAS SITTING IN THE PASSENGER SEAT EVEN WHEN SOMEONE WAS. I THEN TOOK MY VEHICLE TO THE DEALERSHIP AND THEY ADVISED THAT IT WAS THE PASSENGER AIRBAG PRESENCE SENSOR AND THAT IT NEEDED TO BE REPLACED. THEY ADVISED THAT IT WOULD COST OVER $1,000. SO OBVIOUSLY I TOLD THEM THAT I COULD NOT AFFORD IT AT THIS TIME. THIS IS A MAJOR SAFETY CONCERN AND SHOULD BE AN IMMEDIATE RECALL. I HAVE SEEN AND READ HUNDREDS OF COMPLAINTS ABOUT THIS EXACT SAME ISSUE ON TWO DIFFERENT COBALT FORUMS, THE NHTSA WEBSITE, AND ON VARIOUS OTHER WEB SITES THAT I ACCESSED THROUGH GOOGLE. IT IS OBVIOUSLY A MANUFACTURERS PROBLEM AND IT NEEDS
Mileage: 80,000
MICHELIN PILOT SPORT A/S PLUS TIRES ARE "CHUNKING" AND HAVE DRY ROT/CRACKING ON THE TREAD. THE TIRES ARE 3 YEARS OLD WITH LESS THAN 20K MILES. THEY HAVE BEEN PROPERLY ROTATED EVERY 6K MILES. MICHELIN WILL NOT ACCEPT A WARRANTY CLAIM, AS THE TIRES WERE INSTALLED BY THE VEHICLE'S PREVIOUS OWNER.
Mileage: 68,000
STRONG FUEL ODOR COMING FROM VEHICLE. FUEL DRIPPING FROM BOTTOM OF CAR NEAR FUEL TANK. FOUND FUEL LINES ROTTING AND CAUSING LEAKS ON MULTIPLE SECTIONS STARTING AT THE FUEL TANK UP TO THE ENGINE. PROTECTIVE HEAT WRAP HOLDING MOISTURE AND CAUSING LINES TO ROT.
Mileage: 77,500
REAR BRAKES WEAR OUT WAY TOO QUICKLY
MY AIRBAG LIGHT IS ON FOR MY PASSENGER SEAT. I HAVE TAKEN TO A DEALERSHIP AND THEY SAID THE SPECIFIC CODE IS NOT COVERED BY A RECALL. THEY SAID MY PASSENGER PRESENCE MODULE NEEDS REPLACED.
Mileage: 60,000
ABOUT THE THIRD TIME THAT I HAVE HAD TO REPLACE THE REAR BRAKES WITH IN LESS THAN 30000 MILES. THE PARKING BRAKE DOES NOT HOLD THE CAR. THE PADS WEAR UNEVEN, ONLY THE INTERIOR PAD IS BEING WORN. GM DEALERSHIP CONTINUES TO STATE THAT THIS IS NORMAL WEAR, WHICH IS IMPOSSIBLE. AND BRAKING PERFORMANCE IS COMPROMISED BY THIS UNEVEN AND PREMATURE WEAR OF THE REAR BRAKES.
Mileage: 27,000
I STARTED MY CAR AND WENT TO TAKE OFF AND THE AIR BAG LIGHT CAME ON. THERE WAS A COUPLE OF INCIDENCES WHERE I HAD A PASSENGER AND THE AIRBAG LIGHT CAME ON TO SERVICE AIRBAG. I'VE READ IN MULTIPLE PLACES WHERE THIS OCCURRENCE HAS HAPPENED AND THE MANUFACTURE SHOULD FIX THIS.
Mileage: 98,000
I STARTED MY CAR AND WENT TO TAKE OFF AND THE AIR BAG LIGHT CAME ON. THERE WAS A COUPLE OF INCIDENCES WHERE I HAD A PASSENGER AND THE AIRBAG LIGHT CAME ON TO SERVICE AIRBAG. I'VE READ IN MULTIPLE PLACES WHERE THIS OCCURRENCE HAS HAPPENED AND THE MANUFACTURE SHOULD FIX THIS.
Mileage: 98,000
WHEN I DRIVE THE AIR BAG WARNING GOES ON,AND THE TIRE STRESS GOES ON(WHICH MAKE ME SLOW DOWN WORRIED ! ). I REPLACED THE TIRES COUPLE OF TIMES BUT I STILL GET THOSE WARNING(TIRES STRESS AND AIR BAG). LATELY I ALSO RAN TO PROBLEM WITH MY ENGINE. I TOOK IT TO PEP BOYS WERE THEY SAID I SHOULD REPLACE IT FOR 5700$. *TR
Mileage: 10,000
WHEN I DRIVE THE AIR BAG WARNING GOES ON,AND THE TIRE STRESS GOES ON(WHICH MAKE ME SLOW DOWN WORRIED ! ). I REPLACED THE TIRES COUPLE OF TIMES BUT I STILL GET THOSE WARNING(TIRES STRESS AND AIR BAG). LATELY I ALSO RAN TO PROBLEM WITH MY ENGINE. I TOOK IT TO PEP BOYS WERE THEY SAID I SHOULD REPLACE IT FOR 5700$. *TR
Mileage: 10,000
Loss of motive power due to engine failure
Loss of Motive Power due to the Battery Energy Control Module
Electric Vehicle Battery Fires
Outboard Front Seat Belt Anchor Cable Failure
Fuel Line Leak
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.