Chevrolet Cobalt Chevrolet Cobalt

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Chevrolet Cobalt repairs by problem area

Engine (26%)

Transmission and Drivetrain (7%)

Brakes and Traction Control (9%)

Suspension and Steering (25%)

Electrical and Air Conditioning (14%)

Paint, Rust, Leaks, Rattles, and Trim (15%)

Other (4%)

Chart based on 416 repairs.

Chevrolet Cobalt engine repair cost distribution

$2500+ (4%)

$1000 - $2499 (2%)

$500 - $999 (21%)

$100 - $499 (57%)

< $100 (15%)

Chart based on 47 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

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. 

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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. 

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2009 Chevrolet Cobalt 4dr Sedan

turbocharged 260hp 2.0L I4 5-speed manual FWD

26000 mi Turbo failed. 

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2009 Chevrolet Cobalt 4dr Sedan

155-horsepower 2.2L I4 5-speed manual FWD

136000 mi

US $500
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. 

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2009 Chevrolet Cobalt 4dr Sedan

155-horsepower 2.2L I4 4-speed automatic FWD

51700 mi

US $269
cam position actuator replacement 
29400 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. 

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2009 Chevrolet Cobalt 2dr Coupe

turbocharged 260hp 2.0L I4 5-speed manual FWD

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 
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. 
41000 mi

US $26
Exhaust valve actuator failed. Repaired in the driveway. 
3000 mi Cold air duct was rerouted 

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2009 Chevrolet Cobalt 2dr Coupe

155-horsepower 2.2L I4 5-speed manual FWD

50000 mi

US $530
VVT solenoids replaced Tires rotated 

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2009 Chevrolet Cobalt 2dr Coupe

155-horsepower 2.2L I4 4-speed automatic FWD

51000 mi

US $140
loose wire in MAF sensor 

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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? 

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2008 Chevrolet Cobalt 4dr Sedan

148-horsepower 2.2L I4 4-speed automatic FWD

29000 mi Ignition cylinder had to be replaced as the car would not turn off! 
62000 mi

C $300
Leaking oil filter housing o-ring replaced. 
25000 mi Replaced ignition switch. Hard to operate. 

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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. 

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2008 Chevrolet Cobalt 2dr Coupe

171-horsepower 2.4L I4 4-speed automatic FWD

83000 mi

US $80
Camshaft Position Sensor 

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2008 Chevrolet Cobalt 2dr Coupe

148-horsepower 2.2L I4 5-speed manual FWD

93000 mi Throttle position sensor failed. Covered under drive-train warranty. 
210000 mi

US $100
Electric radiator fans failed 
220700 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. 
223300 mi

US $6
Replace collector gasket. 

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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. 

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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 

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2007 Chevrolet Cobalt 4dr Sedan

148-horsepower 2.2L I4 5-speed manual FWD

30507 mi P2135. throttle replaced 

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2007 Chevrolet Cobalt 4dr Sedan

148-horsepower 2.2L I4 4-speed automatic FWD

27590 mi Replaced thermostat under warranty. 
117000 mi

US $3000
Engine replacement 
148000 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. 
156000 mi Low compression. 

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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. 
92300 mi throttle position sensor voltage check failure... CEL and ENG PWR REDUCED DIC indicator. 
100000 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. 
268000 mi

US $1500
The clutch, flywheel, pressure plate, simply worn out after so many miles. 

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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.  

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2007 Chevrolet Cobalt 2dr Coupe

173-horsepower 2.4L I4 4-speed automatic FWD

24000 mi Radiator fan was making a loud noise. They replaced the fan. 
39000 mi

US $235
Replaced radiator fan relay. 
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. 

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2007 Chevrolet Cobalt 2dr Coupe

148-horsepower 2.2L I4 5-speed manual FWD

10000 mi Crank Angle Sensor leading to CEL and Tach failure. Crank Angle Sensor resulting in CEL and Tach failure. 
72540 mi Timing chain rattle on cold start 
64500 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. 
66500 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... 

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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. 

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2006 Chevrolet Cobalt 4dr Sedan

145-horsepower 2.2L I4 4-speed automatic FWD

50220 mi

C $113
Engine light turn on. Diagnostics identified a thermostat malfunction. Issue was covered by the warranty and paid $100 + tax deductible 
99480 mi The engine coil needed replacing. 
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. 
17000 mi Oil leak detected at oil change. Scheduled repair and mechanic found head to be leaking and porous. Head replaced with new. 
26040 mi Engine ceased to function on 2 of its cylinders. Faulty control module. 
73000 mi

US $755
secondary air injection system failed. 
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. 
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. 
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. 

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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 

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2006 Chevrolet Cobalt 2dr Coupe

171-horsepower 2.4L I4 4-speed automatic FWD

381 mi Motor replaced as well as paint bubbles fixed 
22000 mi

US $36
Faulty Fuel Pump, Gas Smell, recalled by mfg due to cracks in housing 
47700 mi Check engine light detected misfire, no problem found, could be fuel injector 
83800 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. 

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2006 Chevrolet Cobalt 2dr Coupe

145-horsepower 2.2L I4 5-speed manual FWD

72320 mi

C $1600
Vent Solenoid Valve & Wiring Harness 
81180 mi

C $885
Replaced Muffler + exhaust piping (rusted out), $454.84. 

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2006 Chevrolet Cobalt 2dr Coupe

145-horsepower 2.2L I4 4-speed automatic FWD

176500 mi

US $250
replaced half of gas line that was corroded 

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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. 

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2005 Chevrolet Cobalt 4dr Sedan

145-horsepower 2.2L I4 4-speed automatic FWD

47000 mi

US $120
Throttle Body Actuator set check engine light off. Got code, then ordered part and fixed myself for 120. 
55180 mi

C $408
DRIVE BELT CRACKED. REMOVED AND REPLACED DRIVE BELT, VERIFIED THAT DRIVE BELT IS SEATED ON ALL PULLEYS CORRECTLY. 
68000 mi

US $500
serpentine belt needed replacing 
105400 mi

C $280
Ignition coil went bad Also replaced fuel filter and plugs at the same time. 
125000 mi

US $520
Fuel lines broke and had to be completely replaced. Gasoline leaked onto road while driving requiring a tow. 
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 ... 
128340 mi

C $226
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. 

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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 

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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. 
211000 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 

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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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Chevrolet Cobalt Engine Problems

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