2006 Chevrolet Cobalt Engine cooling Problems
- Complaints
- 43about this part
- Share
- 2%of 2,330 total for the year
- Median mileage
- 40,639miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 43 complaints about the engine cooling of the 2006 Chevrolet Cobalt, 2% of the 2,330 complaints for this model year. Where a mileage was given, the median is 40,639 miles. 3 of these say a crash was involved and 1 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I own a Chevrolet Cobalt (2006) with 40,000 miles. The car will start, but occasionally the power steering will go, the engine light comes on, and it will sputter and have trouble accelerating. When I stop it makes a thud noise. This occurs once every two days, and to this point it is in the local Chevrolet dealer being diagnosed.”
NHTSA complaint #10273195, filed 2009-06, 40,000 miles“I bought this car back in june. And I have had nothing but problems with the car. Numerous problems with the computers in the car. From the ECM, to the PCM, and the bcm. I also have proof the odometer has also been rolled back. If needed for this investigation can send a copy. The cars has been serviced now 5 times. This time it is sending error codes to the computer of random misfires on the first and fourth cylinder.”
NHTSA complaint #10206949, filed 2007-10, 41,278 miles“My cars engine has stalled several times today, it idles low when moving from a stopped position like at a stop light and when I give it gas it idles high and then when I stop or slow down it stalls in the middle of traffic almost causing a major accident. I was so scared today. I will not drive it again until I figure out the problem. I am glad me or my son didn't get into a very bad accident. When I purchased the car brand new it did this and I took it to the dealership and they could find nothing wrong with it, but it has never seemed to idle correctly.”
NHTSA complaint #10443749, filed 2012-01, 62,551 miles“I purchased a 2006 chevy Cobalt ss w/ 2.4 liter non-supercharged engine. At about 5,000 miles the car began shaking while braking. I took the car to the dealership and they informed me that the front rotors were delaminated and they machined them down smooth again. This fixed the problem for about another 5-600 miles, then the shaking started again. My car had to go back to the dealer again and they machined them down again without replacing the rotors-they said they just pass inspection. …”
NHTSA complaint #10189406, filed 2007-05, 15,000 miles“Exhaust - muffler - went to 3 different service places and the baffles in the muffler are bad and rattling around inside the muffler. None of the commercial service places are able to put a new muffler on as chevy has not released the muffler to my 2006 chevy Cobalt ss - called the dealership and they say it is not covered under my extended warranty - the car is only 3 years old and has not been in any accidents. Dealership does not stock this muffler and wants almost $550 just to replace the muffler. I will be looking for a new car and not a chevy!!”
NHTSA complaint #10283282, filed 2009-09, 60,000 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…
- 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…
- 10239101Jun 30, 2023This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
- 10236164Apr 24, 2023This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308…
Engine cooling: other model years
Other parts of the 2006 Chevrolet Cobalt
1,299 complaintsFuel system
466 complaintsElectrical system
412 complaintsAir bags
146 complaintsTransmission and drivetrain
137 complaintsEngine
93 complaintsOther or unknown
55 complaintsBrakes
51 complaintsBody and structure
51 complaintsSuspension
51 complaintsVehicle speed control
48 complaintsLatches, locks and linkages
38 complaints
← All problems reported for the 2006 Chevrolet Cobalt
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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