The 2008 Cobalt SS with the LNF 2.0L turbo is a genuine performance bargain that suffers from two major weaknesses: the transmission (especially automatics) and catastrophic engine failures from oil starvation and bearing issues, often triggered by aggressive driving or deferred maintenance.
Connecting Rod Bearing Failure / Spun Bearings
Common · high severity
Typical onset: 60,000-120,000 mi
Symptoms: Knocking noise from bottom end, especially cold start or under load, Sudden loss of oil pressure, Metal shavings in oil, Complete engine seizure if ignored
Fix: This is the kiss of death for the LNF. Rod bearings wear prematurely, especially cylinder 2 and 3, often from oil coking in the turbo feed lines or running low on oil. Once you hear the knock, it's too late—needs full bottom-end teardown or short block replacement. Figure 18-24 hours labor for a proper rebuild with new bearings, honing, and balance work. Many shops just swap a used engine (8-12 hours) because machine work exceeds replacement cost.
Estimated cost: $3,500-6,500
Piston Ring Land Failure
Occasional · high severity
Typical onset: 70,000-100,000 mi
Symptoms: Excessive white or blue smoke on startup, Loss of compression in one or more cylinders, High oil consumption (quart every 500-1000 miles), Misfires and rough idle
Fix: The cast pistons crack between the ring lands, usually from detonation or running too much boost on stock internals. Only fix is new pistons and rings, which means full teardown, deck resurfacing, and reassembly. Smart move is upgrading to forged pistons if you're already in there. 20-28 hours labor for a proper job with machine work.
Estimated cost: $4,000-7,000
Automatic Transmission Failure (Aisin AF40-6)
Common · high severity
Typical onset: 80,000-130,000 mi
Symptoms: Slipping between gears, especially 2-3 shift, Shuddering or hesitation during acceleration, Transmission overheating (limp mode), Complete loss of forward gears
Fix: The Aisin six-speed auto behind the turbo motor is marginal at best. Clutch packs burn up, valve body clogs, and the torque converter shudders itself to death. External cooler helps but doesn't prevent inevitable failure. Rebuild runs 12-16 hours; most shops recommend remanufactured unit (8-10 hours R&R). Manual transmission Cobalts avoid this entirely and are vastly more reliable.
Estimated cost: $2,800-4,500
Transmission Oil Cooler Line Leaks
Common · medium severity
Typical onset: 70,000-110,000 mi
Symptoms: Transmission fluid puddles under car, Low fluid level warnings, Burnt transmission smell, Lines visibly corroded at fittings
Fix: The steel cooler lines rust through at the crimped fittings or where they route near the exhaust. Slow leak becomes catastrophic fast if it empties the trans. Replacement lines are cheap but access is terrible—figure 2-3 hours labor. Inspect these every oil change after 60k miles.
Estimated cost: $250-450
Turbocharger Oil Feed Line Coking
Common · medium severity
Typical onset: 50,000-90,000 mi
Symptoms: Turbo whine or whistle changes pitch, Blue smoke from exhaust under boost, Oil consumption increases, Turbo failure (seized shaft)
Fix: The small-diameter oil feed line to the K04 turbo cokes up with carbon deposits, starving the turbo bearings and contaminating the engine oil system. This accelerates bearing wear throughout the engine. Catch it early by replacing the feed line with upgraded braided stainless version (1.5 hours). If turbo is already damaged, you're looking at turbo replacement (4-6 hours) plus cleaning the oil system.
Estimated cost: $400-1,800
Transmission Mount Failure
Common · low severity
Typical onset: 60,000-100,000 mi
Symptoms: Clunking when shifting or launching, Excessive drivetrain movement felt through shifter, Vibration at idle in gear, Visible torn rubber on mount
Fix: The hydraulic transmission mount tears and collapses from the torque of the turbo motor, especially with performance driving. It's a maintenance item on these cars. Replacement takes 1-1.5 hours and dramatically improves shift feel. Upgrade to polyurethane aftermarket mount adds NVH but lasts longer.
Estimated cost: $150-300
High-Pressure Fuel Pump Failure
Occasional · medium severity
Typical onset: 90,000-140,000 mi
Symptoms: Hard starting, especially when hot, Sputtering or cutting out under boost, Fuel pressure codes (P0087, P0191), Long crank before engine fires
Fix: The camshaft-driven high-pressure fuel pump wears out, causing fuel starvation under load. Sometimes just the cam follower wears through and scores the camshaft lobe, which turns a $600 pump job into a $2,000+ nightmare with cylinder head removal (8-12 hours). Catch it early with fuel pressure logging.
Estimated cost: $600-2,200
Owner tips
Change oil every 3,000-4,000 miles with full synthetic—this engine is intolerant of extended intervals and will spin bearings
Replace turbo oil feed line with braided stainless upgrade before 60k miles to prevent coking and catastrophic engine failure
Add an external transmission cooler if you have the automatic—the factory cooler is undersized
If buying used, compression test and oil analysis are non-negotiable; walk away from anything burning oil or knocking
Manual transmission cars are night-and-day more reliable; avoid the automatic unless you're prepared for a $3k-4k replacement
Buy only a well-maintained manual transmission example with full service records and oil analysis—these engines are ticking time bombs without religious maintenance, but manuals with clean history can be reliable fun.
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.
Fitment notes: High-performance turbo variant requires higher CCA than standard Cobalt models
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Every control module on the 2008-2010 Chevrolet Cobalt SS — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
Electric Power Steering Control Module (EPSCM)2.8 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Integrated into steering column assembly, below instrument panel
🔧 Tech 2 + SPS / GDS2 + MDI
⚠️ Column-mounted electric power steering. VIN programming and steering angle sensor calibration required. Common failure point on Cobalt.
Body Control Module (BCM)2.5 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Behind center of instrument panel, above center console, mounted to HVAC plenum bracket
🔧 Tech 2 + SPS / GDS2 + MDI
⚠️ Controls interior/exterior lighting, power windows, door locks, remote keyless entry. VIN programming and theft deterrent relearn required.
Remote Control Door Lock Receiver (RCDLR)1.8 hr R&Rdealer / factory tool +0.3 hr
📍 Behind center of instrument panel, near BCM, mounted to cross-car beam
🔧 Tech 2 + SPS / GDS2 + MDI
⚠️ Receives remote keyless entry signals. Programming required to pair with key fobs after replacement.
📍 Engine compartment, driver side inner fender well, mounted to bracket above wheel well
🔧 Tech 2 + SPS / GDS2 + MDI
⚠️ Integrated hydraulic unit. Configuration and automated bleed procedure required. SS models include StabiliTrak (stability control) and traction control.
📍 Integrated within BCM and ignition lock cylinder sensor
⚠️ Passlock III system. No separate module; function integrated in BCM. 10-minute relearn procedure required after BCM replacement or ignition cylinder service.
Transmission Control Module (TCM)no coding
📍 Integrated within ECM (no separate TCM)
⚠️ Transmission control integrated into ECM for F35 5-speed manual and 4T45-E automatic.
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
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.
Performance
Horsepower
260hp
Torque
260lb-ft
0–60 mph
5.5sec
Quarter mile
14.2sec
Top speed
150mph
Capability & size
Curb weight
3,087lb
Wiper blades
SS coupe variant, no rear wiper. Uses same blades as standard Cobalt coupe.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2008 Chevrolet Cobalt SS 2.0L I4 Turbo and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years.