2009 Chevrolet Cobalt Engine cooling Problems
- Complaints
- 12about this part
- Share
- 2%of 710 total for the year
- Median mileage
- 45,890miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 12 complaints about the engine cooling of the 2009 Chevrolet Cobalt, 2% of the 710 complaints for this model year. Where a mileage was given, the median is 45,890 miles. 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I drove my car around 7:15 am until about 10:00 am. Everything was fine. When I started it up again I heard this loud noise coming from the engine. It sounded like a diesel truck. My flex pipe was disconnected. This attached to the manifold. I didn't hit anything to cause this problem. I asked the repair man what could have caused it and he didn't have an answer.”
NHTSA complaint #10538637, filed 2013-09, 165,000 miles“I own a 2009 Chevrolet Cobalt and have been experiencing a significant rumble when the car is warm and in gear. The car has been taken to an authorized Chevrolet dealership and they will not correct the problem, although my personal mechanic has been able to replicate the problem. I complained to general motors and they refuse to handle the case. Their only response is to suggest that I trade the car in for a ford and contact my attorney.”
NHTSA complaint #10346256, filed 2010-07, 30,500 miles“I took my 2009 Chevrolet Cobalt 1lt sedan to the dealership from where I purchased it from today to get my vehicle inspected as required per my state. Prior to today, for about the past week or so, my check engine light came on. Went to autozone and they ran a diagnostic on it saying a cam shaft position sensor needed replacement. Replaced it and check engine light went away for about a week then came back on. (replaced both of the sensors to be safe) check engine light would turn off for days then randomly come on. …”
NHTSA complaint #10531879, filed 2013-07, 93,242 miles“The key will not turn in the ignition cylinder. Therefore the car will not turn off. There is a special bulletin #10256 about this exact problem including only the 2009 Cobalt however as there is not an open recall the manufacturer will not repair my car because my car has a branded title and they will only repair 'open recall' items. This issue is not listed in the global database when my VIN is searched but it needs to be listed under my VIN and there needs to be an open recall on this issue because it is certainly a huge safety problem that many owners have been experiencing. …”
NHTSA complaint #10443913, filed 2012-01, 72,000 miles“When traveling over 30-35 MPH, and braking hard (locking up the tires), the engine shuts off. Which results in a loss of power steering, power brakes, etc. I was traveling on a snow covered road and wanted to know how the car handled. While going straight at about 35 MPH on icy road, I applied the brakes to lock up the tires. The car continued straight ahead (good). I let off the breaks, at which point I noticed the car was not running. I notified the dealer- could not recreate, the second time I demonstrated it for them. They were able to recreate it on another car. …”
NHTSA complaint #10341072, filed 2010-07, 15,000 milesRelated service bulletins
- 10251890Mar 13, 2024This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank…
- 10250775Feb 22, 2024This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large…
- 10250505Feb 7, 2024This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy.
- 10250347Feb 2, 2024This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and…
- 10249579Jan 12, 2024This PI bulletin advises the technician on the proper way to install the pistons in an engine.
- 10245395Nov 6, 2023This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing…
- 10244273Oct 6, 2023This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
- 10242843Sep 1, 2023The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the…
- 10242262Aug 24, 2023This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and…
- 10242061Aug 7, 2023This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
Engine cooling: other model years
Other parts of the 2009 Chevrolet Cobalt
261 complaintsSteering
206 complaintsElectrical system
151 complaintsAir bags
72 complaintsEngine
39 complaintsTransmission and drivetrain
29 complaintsOther or unknown
25 complaintsBrakes
20 complaintsBody and structure
15 complaintsVehicle speed control
14 complaintsWheels
12 complaintsSuspension
10 complaints
← All problems reported for the 2009 Chevrolet Cobalt
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology