| 1 | 0 | 3 | 4 | 3 | 4 |
Chevrolet Cobalt repairs by problem area
Engine (30%)
Transmission and Drivetrain (8%)
Brakes and Traction Control (4%)
Suspension and Steering (25%)
Electrical and Air Conditioning (16%)
Paint, Rust, Leaks, Rattles, and Trim (15%)
Other (3%)
Chart based on 429 repairs.
Chevrolet Cobalt engine repair cost distribution
$2500+ (4%)
$1000 - $2499 (5%)
$500 - $999 (10%)
$100 - $499 (33%)
< $100 (47%)
Chart based on 112 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2010 Chevrolet Cobalt 4dr Sedan
155-horsepower 2.2L I4 4-speed automatic FWD
| 70000 mi US $250 |
solenoid replacement |
| 18000 mi US $2000 |
Check engine light came on. Dealer did a valve job at 18000 miles. |
| 80000 mi US $2800 |
Valve job done at dealer, under warranty. |
| 83000 mi US $2300 |
Replaced head. |
2010 Chevrolet Cobalt 2dr Coupe
turbocharged 260hp 2.0L I4 5-speed manual FWD
| 400 mi | Check engine light came on; smelled burning plastic. Dealer read OBD2 code for emissions system malfunction. Could not diagnose, reset computer. |
| 450 mi | Engine Light on. Returned to dealer. OBD2 error code for emissions malfunction. Replaced melted emissions line from muffler to motor, installed heat shield that was not installed at the factory. |
| 600 mi | After rain, engine idled roughly, shaking the entire car, tachometer jumping erratically when idling. Dealer found no codes, could not replicate problem. |
2009 Chevrolet Cobalt 4dr Sedan
turbocharged 260hp 2.0L I4 5-speed manual FWD
| 24900 mi | Turbo failed. |
| 48000 mi US $450 |
Mass air flow sensor went bad, causing CEL to eliminate |
| 49000 mi US $400 |
Part of intake housing cracked, limiting boost pressure. |
2009 Chevrolet Cobalt 4dr Sedan
155-horsepower 2.2L I4 5-speed manual FWD
| 136000 mi US $350 |
After two visits to the dealership for MAF code P0102 they found that the plug/ wire had broken in the connector. After the MAF problem was resolved I was getting a code for the Valve Cam Position Sensor. |
| 136000 mi US $180 |
P0172 code for running rich. I am still chasing it down. Changed spark plugs and added fuel injector cleaner to the gas. Still reads code but light is out. It may be fuel filter/ pump or computer problem. |
2009 Chevrolet Cobalt 4dr Sedan
155-horsepower 2.2L I4 4-speed automatic FWD
| 28300 mi | Service Engine light came on for 6 days - not an issue with a loose gas cap. Vent solenoid wires both broken 12 inches from solenoid. |
| 50100 mi US $269 |
cam position actuator replacement |
2009 Chevrolet Cobalt 2dr Coupe
turbocharged 260hp 2.0L I4 5-speed manual FWD
| 41000 mi US $26 |
Exhaust valve actuator failed. Repaired in the driveway. |
| 82000 mi US $423 |
Engine light had been on for about a year. Replaced intake and exhaust cam sensors my self based on codes. Did not repair the problem. Had dealer replace the throttle body sensor. |
| 3720 mi | ECM failure. Don't know why or how, probably just defective from the factory. Car threw a CEL and later, after 10 kms it started to sputter and rev at unusual idle levels and it was also in "limp" mode. Threw 9 codes at the dealer; they determined ECM |
| 27280 mi | Mass absolute pressure sensor failure.... new part installed, no recurring problems. |
| 30380 mi C $4300 |
Weak valve springs happened twice.. 1st time under warranty, 2nd time was on my own bill but I upgraded to an entirely new upgraded head, so the problem will NOT return. |
| 43400 mi C $8000 |
Engine was leaking coolant into oil pan gradually worsening until 1gal was lost in 5 minutes of runtime. Condition known as "porous block" GM refuses to acknowledge problem. Repairing on my own. Head gasket attempt-failed. Car down for 3yrs |
| 3000 mi | Cold air duct was rerouted |
| 48000 mi US $5000 |
Fuel system Fuel pump was bad and pumping fuel into the oil Low Coolant light keeps illuminating, no sign of leaks anywhere. Had vehicle up on hoist and no sign. No coolant residue in tailpipe. WTF Replaced engine due to extremely thick oil. Only thing we could find was a problem with the original engine having hairline cracks in the head and block that allowed small amounts of antifreeze into the oil, turning it to sludge. |
2009 Chevrolet Cobalt 2dr Coupe
155-horsepower 2.2L I4 5-speed manual FWD
| 50000 mi US $530 |
VVT solenoids replaced Tires rotated |
2009 Chevrolet Cobalt 2dr Coupe
155-horsepower 2.2L I4 4-speed automatic FWD
| 51000 mi US $140 |
loose wire in MAF sensor |
| 101000 mi US $540 |
fuel line leaks |
2008 Chevrolet Cobalt 4dr Sedan
148-horsepower 2.2L I4 5-speed manual FWD
| 96000 mi US $175 |
Replaced serpentine belt. No biggie. Belt had cracks. I guess that's routine? |
2008 Chevrolet Cobalt 4dr Sedan
148-horsepower 2.2L I4 4-speed automatic FWD
| 62000 mi C $300 |
Leaking oil filter housing o-ring replaced. |
| 25000 mi | Replaced ignition switch. Hard to operate. |
| 112000 mi US $130 |
Leaking fuel line. Replaced with all new aftermarket fuel lines. Check engine light for emission secondary air check valve stuck open. Replaced with new check valve. |
| 29000 mi | Ignition cylinder had to be replaced as the car would not turn off! |
| 107000 mi US $450 |
Fuel line leak due to corrosion. |
2008 Chevrolet Cobalt 2dr Coupe
171-horsepower 2.4L I4 5-speed manual FWD
| 24000 mi | MAF sensor giving erratic readings; replaced, problem not solved. Took car back to dealer, discovered problem with MAF wiring/plug; new plug, problem fixed completely. |
| 44000 mi | Cracked flex-pipe in exhaust; rattle in forward catalytic converter. |
2008 Chevrolet Cobalt 2dr Coupe
171-horsepower 2.4L I4 4-speed automatic FWD
| 83000 mi US $80 |
Camshaft Position Sensor |
2008 Chevrolet Cobalt 2dr Coupe
148-horsepower 2.2L I4 5-speed manual FWD
| 108000 mi US $2000 |
Head gasket replacement and head work |
| 93000 mi | Throttle position sensor failed. Covered under drive-train warranty. |
| 210000 mi US $100 |
Electric radiator fans failed |
| 219300 mi US $10 |
Coolant leak discovered, cooling system compromised. Attempted repair with stop leak, which worked temporarily. Now I'm going to leave it until spring. |
| 220300 mi US $6 |
Replace collector gasket. |
2008 Chevrolet Cobalt 2dr Coupe
148-horsepower 2.2L I4 4-speed automatic FWD
| 53000 mi US $100 |
Ignition/key stuck in Run and Start position. Could not turn vehicle off. |
| 118800 mi US $180 |
Fuel line rusted and leaked. |
2007 Chevrolet Cobalt 4dr Sedan
173-horsepower 2.4L I4 4-speed automatic FWD
| 27000 mi US $250 |
check engine light - sensor related to fuel system replaced by dealer at owner's expense |
| 67000 mi | electronic problem - onboard computer had to be replaced. I have 3 cobalts and could not recommend them - they are not as good a car as the cavalier |
2007 Chevrolet Cobalt 4dr Sedan
148-horsepower 2.2L I4 5-speed manual FWD
| 30507 mi | P2135. throttle replaced |
2007 Chevrolet Cobalt 4dr Sedan
148-horsepower 2.2L I4 4-speed automatic FWD
| 157000 mi US $120 |
Welded the flex pipe at the inlet of the catalytic converter |
| 163000 mi US $220 |
weld muffler |
| 217000 mi US $120 |
there was a bad connection from the battery to the starter |
| 117000 mi US $3000 |
Engine replacement |
| 147500 mi | Low compression in cylinder 3. Repair would be > $1,000. Recommended not to proceed with repair, but to just drive car until it dies. This is the second engine in the car. Will not buy Chevy again. |
| 153000 mi | Low compression. |
| 27590 mi | CEL came on, reading indicated car not reaching operating temperature. Fixed with replacement thermostat. Replaced thermostat under warranty. |
2007 Chevrolet Cobalt 2dr Coupe
supercharged 205hp 2.0L I4 5-speed manual FWD
| 51000 mi US $40 |
Exhaust leak |
| 55000 mi | Major leak in exhaust flex pipe. Covered under emissions warranty because flex pipe is part of catalytic converter. |
| 268000 mi US $1500 |
The clutch, flywheel, pressure plate, simply worn out after so many miles. |
| 91800 mi | throttle position sensor voltage check failure... CEL and ENG PWR REDUCED DIC indicator. |
| 99800 mi US $500 |
got the car stuck on the side of a driveway. In the process of extracting the car, the wheels spun and translated excessive shockload to the converter & shattered catalytic converter innards. Ordered parts & replaced. 2nd occurence of this. |
2007 Chevrolet Cobalt 2dr Coupe
173-horsepower 2.4L I4 5-speed manual FWD
| 40300 mi C $135 |
Cracked exhaust flex pipe. Possibly caused by hard launches. |
| 47120 mi C $500 |
Engine light came on, power reduced greatly under acceleration. Engine oil pressure switch went bad and threw everything off |
| 13020 mi | Check engine light came on intermittently, it turned out to be a problem with the fuel line sensor. |
| 35960 mi | Car will maintain at a constant speed when gas pedal is not depressed and car is in gear. Car will continue along indefinitely at a consistent pace. |
2007 Chevrolet Cobalt 2dr Coupe
173-horsepower 2.4L I4 4-speed automatic FWD
| 68000 mi US $798 |
Car makes a noise that sounds like a bearing going bad. |
| 76000 mi US $435 |
Downpipe had crack. Replaced downpipe. |
| 76000 mi | Had trouble starting when engine was cold and could smell gas once engine was warm. Found that fuel pump module was cracked. Fuel pump module was replaced. |
| 92000 mi US $245 |
Fuse for front cooling fan kept blowing. Dealer found a shorted wire in the harness and fixed it. CEL was on. Dealer found a cracked air inlet hose. However the light has come back on since getting the vehicle back. |
| 102000 mi US $1004 |
The CEL was lit, the car wouldn't shift gears properly, and the idle was very rough. The issue turned out to be that the fuel injectors were shorted. The dealership replace the fuel injectors and reprogrammed the ECM. |
| 24000 mi | Radiator fan was making a loud noise. They replaced the fan. |
| 39000 mi US $235 |
Replaced radiator fan relay. |
2007 Chevrolet Cobalt 2dr Coupe
148-horsepower 2.2L I4 5-speed manual FWD
| 63800 mi | One of many unsuccessful trips to shop for stalling problem. Dealership put water in tank. Sent to another dealership for repairs. Bumper and drivers door damaged at dealership. |
| 66000 mi | Engine light came on. Took it to the dealership and they cleared the eng light. The catalytic convertor was bad. Ordered the parts. And it was repaired about a week later when the parts finally came in. So far for stalling problem have also replaced fuel filter twice, done a fuel injection cleaning twice, and replaced the fuel tank. Will go back when they figure out what to do next. |
| 66300 mi | The engine light came on again. The converter was bad again. Parts ordered and replaced again. Still having engine problems. |
| 67000 mi | Engine tries to stall out while going on a long R turn trying to get on the expressway. Fuel tank replaced. Fuel induction done. Still having the same problem. Contacted customer service and dealer contacted Chevy to what to do next... |
| 72540 mi | Timing chain rattle on cold start |
| 10000 mi | Crank Angle Sensor leading to CEL and Tach failure. Crank Angle Sensor resulting in CEL and Tach failure. |
2006 Chevrolet Cobalt 4dr Sedan
145-horsepower 2.2L I4 5-speed manual FWD
| 43000 mi US $600 |
heater core sprung a leak and needed replaced. repair parts only available from dealer - took 1 day to get part shipped and 8 hrs shop labor to repair. |
| 52000 mi US $28 |
Coolant thermostat broke. Pulled out old part put in new. |
2006 Chevrolet Cobalt 4dr Sedan
145-horsepower 2.2L I4 4-speed automatic FWD
| 282000 mi US $33 |
Purge Valve for Evap. Cannister system replaced. Total cost $33 for parts. |
| 300000 mi US $45 |
Front O2 Oxygen sensor replaced |
| 303000 mi US $80 |
Ignition Control Module replaced |
| 310000 mi | Ignition control module replaced again...part under warranty. |
| 10000 mi | Email 2-8-2007: Took car to dealer to try to find a hesitation problem that I have had at stop lights. It just feels like the car misses a beat once and a while. Dealer found nothing wrong. |
| 99380 mi | The engine coil needed replacing. |
| 85000 mi | Car slowed down and stopped while driving on freeway. Was making noise and smoke coming from the back. After diagnostic, mechanic said engine failure. |
| 26040 mi | Engine ceased to function on 2 of its cylinders. Faulty control module. |
| 17000 mi | Oil leak detected at oil change. Scheduled repair and mechanic found head to be leaking and porous. Head replaced with new. |
| 50220 mi C $113 |
Engine light turn on. Diagnostics identified a thermostat malfunction. Issue was covered by the warranty and paid $100 + tax deductible |
| 73000 mi US $755 |
secondary air injection system failed. |
| 17000 mi | I was only getting 25 MPG, should be higher, vehicle running ok. Found two codes P1300 engine misfire detected, P0171, fuel trim lean. Needs injectors cleaned and PCM reprogramed. |
2006 Chevrolet Cobalt 4dr Sedan
| 92000 mi US $300 |
C02 sensor needed to be replaced. |
2006 Chevrolet Cobalt 2dr Coupe
supercharged 205hp 2.0L I4 5-speed manual FWD
| 21390 mi | Low level engine coolant lighting up for no reason. All levels verified and ok. Defective sensor replaced under warranty. |
| 32240 mi | Low level engine coolant lighting up for no reason. Defective sensor replaced under warranty |
| 36890 mi | Busted catalytic converter. Replaced under warranty. |
| 50220 mi | Low level engine coolant light coming on AGAIN. Car stored for winter, will try to get it fixed at no expense, even if warranty is over. Low level engine coolant light coming on AGAIN. Car stored for winter, will try to get it fixed at no expense, even if warranty is over |
2006 Chevrolet Cobalt 2dr Coupe
171-horsepower 2.4L I4 4-speed automatic FWD
| 22000 mi US $36 |
Faulty Fuel Pump, Gas Smell, recalled by mfg due to cracks in housing |
| 36500 mi | Check engine light detected misfire, no problem found, could be fuel injector |
| 82700 mi US $150 |
I intermittently got a traction control light and check engine light code P0014 cam position over advanced. I replaced the cam actuator solenoid both intake and exhaust on the head of the engine and the cam position sensor 5 min fix. |
| 381 mi | Motor replaced as well as paint bubbles fixed |
2006 Chevrolet Cobalt 2dr Coupe
145-horsepower 2.2L I4 5-speed manual FWD
| 72420 mi C $1600 |
Vent Solenoid Valve & Wiring Harness |
| 80880 mi C $885 |
Replaced Muffler + exhaust piping (rusted out), $454.84. |
2006 Chevrolet Cobalt 2dr Coupe
145-horsepower 2.2L I4 4-speed automatic FWD
| 153800 mi US $250 |
replaced half of gas line that was corroded |
2005 Chevrolet Cobalt 4dr Sedan
145-horsepower 2.2L I4 5-speed manual FWD
| 41000 mi US $15 |
Engine light diagnosed as fuel system problem/lean. Added 64 oz. mineral spirits to full tank of gas. Presently waiting for light to go out(mineral spirits are same as injector cleaner). |
| 45000 mi | Engine Light went out in April with no further repairs. |
| 83000 mi US $121 |
Engine light on. code said O2 sensor. replaced and light stays off. |
2005 Chevrolet Cobalt 4dr Sedan
145-horsepower 2.2L I4 4-speed automatic FWD
| 59000 mi US $85 |
Check engine light was on they said it was due to the knock sensor needing to be reprogrammed and the "evap vent solenoid" needed to be replaced. I have not noticed any change in mileage or performance so I decided to not pay the $300+ they quoted me ... |
| 47000 mi US $120 |
Throttle Body Actuator set check engine light off. Got code, then ordered part and fixed myself for 120. |
| 128340 mi C $126 |
Engine light was on, 3 codes. MAP and MAF were replaced. Oil Excessive oil consumption was identified (Caused piston rings and or head gasket). Inspected but no repair attempted. Car started misfiring at idle and the check engine light came on. Apparently low oil level lead to vaccum leak. |
| 125000 mi US $520 |
Fuel lines broke and had to be completely replaced. Gasoline leaked onto road while driving requiring a tow. |
| 55180 mi C $408 |
DRIVE BELT CRACKED. REMOVED AND REPLACED DRIVE BELT, VERIFIED THAT DRIVE BELT IS SEATED ON ALL PULLEYS CORRECTLY. |
| 103540 mi C $280 |
Ignition coil went bad Also replaced fuel filter and plugs at the same time. |
| 68000 mi US $500 |
serpentine belt needed replacing |
2005 Chevrolet Cobalt 2dr Coupe
supercharged 205hp 2.0L I4 5-speed manual FWD
| 91000 mi US $252 |
IAT/MAP Sensor plastic was cracked, sensor and vehicle operated normally, replaced sensor anyways. |
| 116000 mi | Intercooler pump has stopped working. Replacement pump ordered, yet to be installed. |
| 140000 mi | intercooler pump failed |
2005 Chevrolet Cobalt 2dr Coupe
145-horsepower 2.2L I4 5-speed manual FWD
| 103000 mi US $247 |
Car wouldnt start one morning. Took off the coils and removed the boots and saw that cylinders 2 and 3 werent firing. Replaced the coil packs and the ignition control module and its been riding smooth since. |
| 207000 mi US $700 |
Rocker disintegrated, shoved intake valve open, crashed into piston, rod fell apart, bent oil pickup in oil pan. Replaced rocker and entire bottom end. |
| 210000 mi | Spun a rod in the rebuilt motor after 4k miles. car is down and wont be repaired again, not worth putting any more money into. gonna sell it to pick n pull |
2005 Chevrolet Cobalt 2dr Coupe
145-horsepower 2.2L I4 4-speed automatic FWD
| 19000 mi | Key got stuck in ignition and would not come out. Replaced shifter. |
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