The 2008 Cobalt is GM's compact economy car with the Delta platform, sharing bones with the Saturn Ion. It's known for catastrophic ignition switch failures (recalled), problematic automatic transmissions, and intake valve carbon buildup on the 2.4L. The 2.2L is more durable but still suffers electrical gremlins and power steering issues.
Ignition Switch Failure (Recalled but Still Problematic)
Common · high severity
Symptoms: Engine shuts off while driving, Key rotates out of RUN position on bumpy roads, Power steering and brakes lose assist suddenly, Airbags may not deploy in crash
Fix: GM recalled this in 2014 after multiple fatalities. Replacement ignition switch and lock cylinder required, plus software update. Even post-recall, replacement switches can fail. 1.5-2 hours labor if just the switch, 3+ if lock cylinder is worn.
Estimated cost: $200-500
4T45-E Automatic Transmission Failure
Common · high severity
Typical onset: 80,000-140,000 mi
Symptoms: Harsh 1-2 shift or slipping between gears, Transmission overheating, burnt fluid smell, No reverse or stuck in gear, Metal shavings in pan during fluid change
Fix: The 4-speed automatic suffers from pressure control solenoid failures, worn clutch packs, and oil cooler line leaks that starve it of fluid. Band-aid fix is solenoids and fluid flush (4 hours), but most need rebuild or replacement by 120k. Remanufactured unit swap is 8-10 hours, cooler lines must be inspected.
Estimated cost: $2,500-4,200
Electric Power Steering (EPS) Motor Failure
Common · high severity
Typical onset: 60,000-110,000 mi
Symptoms: Sudden complete loss of power assist, SERVICE STEERING warning on dash, Grinding or whining noise from steering column, Intermittent assist that comes and goes with bumps
Fix: The EPS motor on the column fails from worn brushes and internal shorts. GM issued TSB 09-02-32-004A. Replacement motor/ECU unit required, 2.5 hours labor. Aftermarket units available but quality is hit-or-miss. Must be programmed.
Estimated cost: $600-1,100
2.4L Ecotec Timing Chain and Carbon Buildup
Occasional · high severity
Typical onset: 90,000-130,000 mi
Symptoms: Rattling from engine on cold start (timing chain stretch), Loss of power, rough idle, misfires (carbon buildup), Check engine light with cam/crank correlation codes, Oil consumption, blue smoke from valve seals
Fix: The 2.4L direct-injection motor builds carbon on intake valves, causing misfires. Walnut blasting required (4 hours). Timing chain stretch is common due to infrequent oil changes; tensioner and guides fail. Chain job is 6-8 hours, includes VVT solenoids. If piston rings are gone from carbon scoring, you're looking at rebuild territory.
Estimated cost: $1,200-2,800 for chain; $3,500-5,500 for rebuild
Fuel Pump and Pressure Regulator Failure
Occasional · medium severity
Typical onset: 100,000-150,000 mi
Symptoms: No start or long crank, especially when hot, Engine stumbles or cuts out under load, Whining noise from rear of car, Low fuel pressure on gauge (below 50 psi)
Fix: In-tank pump wears out, and the integral pressure regulator can stick. Pump assembly replacement requires dropping the tank, 2.5-3 hours. GM pumps are pricey; aftermarket Delphi or AC Delco recommended. Replace fuel filter at same time.
Estimated cost: $500-800
Transmission Oil Cooler Line Corrosion and Leaks
Common · medium severity
Typical onset: 70,000-120,000 mi
Symptoms: Red ATF puddles under car, near radiator or frame rail, Transmission running hot, burnt smell, Low fluid level on dipstick, Rust and corrosion visible on steel cooler lines
Fix: The steel cooler lines rust through, especially in salt states. Leaks start small but can dump all fluid quickly. Replace both lines and cooler (integrated into radiator or external). 3-4 hours labor, flush system afterward. If trans ran low on fluid, expect internal damage.
Estimated cost: $400-900
Front Engine Mount (Torque Strut) Failure
Occasional · low severity
Typical onset: 80,000-130,000 mi
Symptoms: Clunking on acceleration or deceleration, Engine rocks excessively when shifting into gear, Vibration through steering wheel and floor, Visible cracks or separation in hydraulic mount
Fix: The upper torque strut mount (hydraulic, bolted to frame) fails from age and fluid leaks. Causes excessive drivetrain movement. Replacement is straightforward, 1.5 hours. Inspect lower mounts at same time.
Estimated cost: $250-450
Owner tips
Change oil every 5,000 mi religiously on the 2.4L to prevent timing chain stretch and carbon buildup; use full synthetic.
Check power steering assist function monthly — sudden failure leaves you with heavy manual steering and can cause accidents.
Verify ignition switch recall was completed and carry only the car key (no heavy keychain) to reduce switch wear.
Inspect transmission cooler lines annually in rust belt states; catch leaks before trans starves for fluid.
If buying used, budget $1,500-2,500 for deferred maintenance (transmission service, timing chain, EPS motor) within first year.
Hard pass unless you're getting it for $2,000 or less and can wrench yourself — the ignition switch and transmission issues are deal-breakers for daily-driver reliability, and repair costs exceed the car's value quickly.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
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UCI-FRAM Group is recalling certain LS1328 ignition Switches sold as Wells LS1328, Duralast LS1328, Airtex 1S6097, and Carquest 53-27479, and LS1497 Ignition Switches sold as Wells LS1497, Duralast LS1497, Airtex 1S10961, and Carquest 53-27967, for use on various General Motors model and model year vehicles during repair and replacement of the original ignition switch. The weight on the key ring and/or road conditions or some other jarring event may cause the affected ignition switches to move out of the run position, turning off the engine and disabling the air bags.
Consequence: If the ignition switch moves from the run position to accessory, the car would stall and the air bags will not deploy in the event of a crash, increasing the risk of personal injury to the occupants.
Remedy: UCI-FRAM Group has notified its purchasers to quarantine and return all inventory. Any switches already installed in vehicles will be replaced by GM dealers as part of NHTSA recall 14V-047, free of charge. UCI-Fram's purchasers should contact UCI-FRAM Group at 1-800-890-2075. GM vehicle owners requiring additional information on that recall campaign should contact GM at 1-800-222-1020 (Chevrolet), 1-800-762-2737 (Pontiac) or 1-800-553-6000 (Saturn).
ELECTRICAL SYSTEM:IGNITION · 14V171000
2014-04-10
General Motors LLC (GM) is recalling certain model year 2005-2010 Chevrolet Cobalt, 2006-2011 Chevrolet HHR, 2007-2010 Pontiac G5, 2006-2010 Pontiac Solstice, 2003-2007 Saturn Ion, and 2007-2010 Saturn Sky vehicles. In the affected vehicles, the key can be removed from the ignition when the ignition is not in the "Off" position.
Consequence: If the key can be removed from the ignition when the ignition is not in the "off" position, the vehicle could roll away: (a) for an automatic transmission, if the transmission is not in the "Park" position; or (b) for a manual transmission, if the parking brake is not engaged and the transmission is not in the "Reverse" position. This potential for rollaway increases the risk for a crash and occupant or pedestrian injuries.
Remedy: General Motors will notify owners, and for vehicles that were built with the defective ignition cylinder and have not
previously had the ignition cylinder replaced with the redesigned part, dealers will replace the ignition cylinder and cut and, if necessary, re-learn two ignition/door keys for each vehicle. For vehicles that were built with the redesigned ignition cylinder or had the ignition cylinder replaced with the redesigned part, dealers will cut and, if necessary, re-learn two ignition/door keys for each vehicle. The recall began on April 18, 2014. Chevrolet owners may contact General Motors at 1-800-222-1020, Pontiac owners at 1-800-762-2737, and Saturn owners at 1-800-553-6000. General Motors' number for this recall is 14113 for the ignition lock cylinder and key replacement, and 14133 for only key replacements. Note: Until a vehicle has been remedied, owners and operators are advised that when exiting, to be sure that the vehicle is in "Park," or in the case of a manual transmission, that the vehicle is in the "Reverse" position and the parking brake is engaged.
AIR BAGS · 14V047000
2014-02-10
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring.
General Motors LLC (GM) notified the agency on February 10, 2014 that they are recalling 619,122 model year 2005-2007 Chevrolet Cobalt, and 2007 Pontiac G5 vehicles. On February 25, 2014, GM increased the recall to include an additional 748,024 model year 2006-2007 Chevrolet HHR and Pontiac Solstice vehicles and 2003-2007 Saturn Ion vehicles and 2007 Saturn Sky vehicles. In these models, the weight on the key ring and/or road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine.
On March 27, 2014, GM notified the agency that the defective ignition switches may have been used as service replacement parts on other vehicles, and as a result GM will be recalling certain model year 2008-2010 Chevrolet Cobalt, Saturn Sky, and Pontiac G5 and Solstice, and 2008-2011 Chevrolet HHR vehicles. The part numbers for the service parts are 10392423 (a/k/a ACDelco D1461F), 10392737, 15857948, 15854953, 15896640, and 25846762. This expansion represents an additional 823,788 vehicles.
Consequence: If the key is not in the run position, the air bags may not deploy if the vehicle is involved in a crash, increasing the risk of injury.
Remedy: GM will notify owners, and dealers will replace the ignition switch, free of charge. An interim notification was issued to owners of 2007 and earlier models on March 10, 2014, informing them of the safety defect. Owners of 2008 and later vehicles will be mailed an interim letter on April 21, 2014. All affected owners will receive another letter once parts are available. The recall began on April 18, 2014. Owners may contact Chevrolet at 1-800-222-1020, Pontiac at 1-800-762-2737 or Saturn at 1-800-553-6000. GM's number for the initial recall is 13454 and 14063 for the expansion. GMs recall number for the vehicles that may have received the replacement parts is 14092. Note: Until the recall repairs have been performed, it is very important that customers remove all items from their key rings, leaving only the vehicle key. The key fob (if applicable), should also be removed from the key ring. Always wear your seatbelt.
General Motors (GM) is recalling certain model year 2007 Chevrolet Equinox and Pontiac Torrent vehicles originally sold or currently registered in Arizona, California, Nevada, and Texas; model year 2007 Chevrolet Cobalt, Pontiac G5, and Saturn ION vehicles originally sold, or currently registered in, Arizona, California, Florida, Nevada, or Texas; model year 2008 Chevrolet Cobalt and Pontiac G5 vehicles originally sold, or currently registered in, Arizona; and model year 2009 Chevrolet Cobalt and Pontiac G5 vehicles originally sold, or currently registered in, Arkansas, Arizona, California, Nevada, Oklahoma, or Texas. Some of these vehicles have a condition in which the plastic supply or return port on the fuel pump module may crack, which could cause a fuel leak.
Consequence: Fuel leakage in the presence of an ignition source may result in a fire.
Remedy: GM will notify owners, and dealers will replace the fuel pump module, free of charge. Notification to owners began on on November 21, 2012. Owners were instructed to not bring their vehicles in for repair until January 2013. Owners may contact General Motors at 1-800-521-7300.
STEERING:ELECTRIC POWER ASSIST SYSTEM · 10V073000
2010-03-03 · PE10005
GENERAL MOTORS IS RECALLING CERTAIN MODEL YEAR 2005-2010 CHEVROLET COBALT AND MODEL YEAR 2007-2010 PONTIAC G5 VEHICLES EQUIPPED WITH ELECTRIC POWER STEERING. THE DRIVER MAY EXPERIENCE A SUDDEN LOSS OF POWER STEERING ASSIST THAT COULD OCCUR AT ANY TIME WHILE DRIVING.
Consequence: IF POWER STEERING ASSIST IS LOST, IT WOULD REQUIRE GREATER DRIVER EFFORT AT LOW VEHICLE SPEEDS, INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL REPLACE THE ELECTRIC POWER STEERING MOTOR FREE OF CHARGE. OWNERS ARE BEING NOTIFIED ON A ROLLING BASIS BETWEEN MARCH 29 THROUGH NOVEMBER 2010. A COPY OF THE MAILING SCHEDULE IS LOCATED IN THE RECALL FILE. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438 AND PONTIAC AT 1-800-620-7668 OR AT THE OWNER CENTER AT WWW.GMOWNERCENTER.COM.
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