2009 Chevrolet Cobalt SS Service Brakes, Hydraulic Problems
Owners have filed 133 complaints with NHTSA about service brakes, hydraulic problems on the 2009 Chevrolet Cobalt SS, 70% of all complaints for this model year. Half of the reports with a mileage happened before 10,000 miles. The words owners use most often: “rear brakes” (53% of reports).
- 133service brakes, hydraulic complaints
- 10,000median miles at failure
- 5mention a crash
- 0mention an injury
- 0related recalls
- 24%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Rear brakes: mentioned in 71 of 133 complaints (53%)
- Brake pads: mentioned in 24 of 133 complaints (18%)
- Rotors scored: mentioned in 8 of 133 complaints (6%)
At what mileage do service brakes, hydraulic problems happen?
Based on 124 complaints that reported the odometer reading.
How serious are the reports?
Of 133 complaints, 5 mention a crash, 2 a fire.
Chevrolet Cobalt SS service brakes, hydraulic complaints by model year
| Model year | Service Brakes, Hydraulic complaints | Share of that year | Median miles |
|---|---|---|---|
| 2010 Cobalt SS | 2 | 22% | 23,590 |
| 2009 Cobalt SS | 133 | 70% | 10,000 |
| 2008 Cobalt SS | 64 | 67% | 14,000 |
When owners reported it
Related recalls (0)
No safety recall lists service brakes, hydraulic for the 2009 Chevrolet Cobalt SS. A pattern of complaints does not always lead to a recall.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
The rear brakes failed on my car at around 28,000 miles. As soon as i got the new ones installed they still are terrible, i do not understand why there would be such brakes that fail so early and could cause harm to people. There needs to be a recall on these brakes, they are entirely too unsafe…
Tl* the contact owns a 2009 chevrolet cobalt ss turbo. The contact stated his rear brake pads were prematurely wearing out rapidly. The rotors and brake pad never made any noise alerting the contact there was something wrong. When the vehicle was being serviced the mechanic showed him how the…
When braking softly, rear brakes make a loud noise and i've started to notice slightly uneven wear on one of the rear brake pads. Also occasionally while moving in reverse with foot brakes applied i can hear a very very loud sound slightly different and way louder then the sound when moving…

Frequently asked questions
Do all 2009 Chevrolet Cobalt SSs have service brakes, hydraulic problems?
No. NHTSA has 133 owner complaints about service brakes, hydraulic for the 2009 Chevrolet Cobalt SS (70% of the 190 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the 2009 Chevrolet Cobalt SS service brakes, hydraulic?
No recall currently lists service brakes, hydraulic for this vehicle.
At what mileage do service brakes, hydraulic problems start?
The median reported mileage is 10,000 miles: half of the reports with a mileage came before that.
What do owners say about service brakes, hydraulic problems on the 2009 Chevrolet Cobalt SS?
The most frequent phrase is “rear brakes”, in 71 of 133 complaints, followed by “brake pads” (24).
See all 2009 Chevrolet Cobalt SS problems or service brakes, hydraulic problems across all Cobalt SS years.