2008 Chevrolet Cobalt SS problems & reliability
95 owner complaints filed with NHTSA for the 2008 Chevrolet Cobalt SS. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Service Brakes, Hydraulic → | 64 | 67% |
| Service Brakes | 7 | 7% |
| Electrical System | 6 | 6% |
| Engine | 6 | 6% |
| Fuel/propulsion System | 5 | 5% |
| Parking Brake | 5 | 5% |
| Unknown OR Other | 5 | 5% |
| Air Bags | 4 | 4% |
| Equipment | 2 | 2% |
| Exterior Lighting | 2 | 2% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 16,750 miles (middle 50% between 10,000 and 41,250 miles), based on 84 complaints that included mileage.
Complaints by incident year
What owners report
“As I was driving on a city street, the engine began to run rough and I noticed the odor of gasoline. I pulled over to check for the source of the odor and found fuel leaking from the bottom of the car and onto the road. This was an extremely dangerous condition, as I could not stop the fuel from continuing to leak. I…”
Fuel/propulsion System · filed Oct 31, 2018
“Driver door stuck. Will not open. If you are inside and that happens, you can not get out the door. The car had been parked outside overnight. Morning it would not open. It will unlock, but not open.”
Unknown OR Other · filed Aug 27, 2018
“The key is stuck in the ignition and the car will not start. In addition, I can't get the gear to shift to park to move to neutral, I've lost all power to the car from the lights to being unable to open the trunk. I had to put the emergency break on for fear that the car would roll away because I couldn't move the…”
Engine · filed Dec 4, 2017
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Fuel Line Leak
Preliminary Evaluation PE20011 · opened Jul 5, 2020 · closed Aug 17, 2023
- Electric Power Steering Failure
Preliminary Evaluation PE10005 · opened Jan 27, 2010 · closed Jul 19, 2010 · led to recall 10V073000
Technical service bulletins
186 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2008 Chevrolet Cobalt SS. The 10 most recent:
New Vehicle Monitoring Programs Section in IVH
13598 · Other · issued Sep 9, 2025
This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may…
PIC5650M · Service Bulletin/Repair Instructions · issued Aug 7, 2025
This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
PIP5601C · Service Bulletin/Repair Instructions · issued Jul 18, 2025
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
PIT5074R · Service Bulletin/Repair Instructions · issued May 30, 2025
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
PIT5074R · Service Bulletin/Repair Instructions · issued May 30, 2025
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
PIT5074R · Service Bulletin/Repair Instructions · issued May 30, 2025
This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
04-06-04-051J · Service Bulletin/Repair Instructions · issued Sep 27, 2024
This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a…
08-07-30-026I · Service Bulletin/Repair Instructions · issued Sep 16, 2024
This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. and Canada Dealers Only).
02-00-89-002X · Service Bulletin/Repair Instructions · issued Sep 9, 2024
This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized…
PIT3271P · Service Bulletin/Repair Instructions · issued Sep 6, 2024
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
No NHTSA recall campaigns name the 2008 Chevrolet Cobalt SS in our current data. Recalls may apply only to certain VIN ranges — always confirm with a VIN check.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2008 Chevrolet Cobalt SS?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 16,750 miles — budget accordingly if the car is approaching that mileage.