The 2006 Cobalt SS with the 2.0L Ecotec supercharged engine is a fun, affordable performance platform that suffers primarily from weak bottom-end engine internals when modified or driven hard, plus typical GM small-car transmission mount failures and cooler line issues.
Symptoms: knocking or ticking from lower engine block, metal shavings in oil, sudden loss of oil pressure, connecting rod breaking through block in worst cases
Fix: LSJ bottom end is notorious for weak piston ringlands and rod bearings, especially on modified cars or those that saw track use. Fix requires full short block replacement or engine rebuild with forged internals. 12-18 labor hours for R&R and rebuild.
Estimated cost: $3,500-6,500
Head Gasket Failure
Occasional · high severity
Typical onset: 80,000-120,000 mi
Symptoms: white smoke from exhaust, coolant loss with no visible leaks, overheating under boost, oil and coolant mixing
Fix: Supercharged LSJ runs higher cylinder pressures than naturally aspirated variants. Factory MLS gasket can fail, especially if engine has been overheated. Requires head removal, resurfacing, new gasket and bolts. 8-10 labor hours.
Estimated cost: $1,200-2,000
Transmission Mount Collapse
Common · medium severity
Typical onset: 50,000-90,000 mi
Symptoms: excessive engine movement during hard acceleration, clunking when shifting from Park to Drive, vibration at idle, difficulty shifting into first gear
Fix: The passenger-side transmission mount (torque strut) fails regularly on these due to the supercharged torque output. Hydraulic portion collapses, allowing excessive drivetrain movement. 1.5-2 labor hours to replace.
Estimated cost: $250-450
Transmission Oil Cooler Line Leaks
Common · medium severity
Typical onset: 70,000-110,000 mi
Symptoms: transmission fluid spots under vehicle, low transmission fluid warnings, burnt transmission smell, transmission slipping or harsh shifts
Fix: The steel cooler lines running to the radiator-mounted cooler corrode and develop leaks, especially where they connect at the radiator. Lines need replacement, plus refill and fluid check. 2-3 labor hours.
Estimated cost: $350-600
Supercharger Coupler Wear
Occasional · medium severity
Typical onset: 80,000-130,000 mi
Symptoms: whining or squealing from supercharger, loss of boost pressure, rubber dust around blower snout, Check Engine Light with boost-related codes
Fix: The rubber coupler connecting the supercharger snout to the input shaft degrades over time and can slip or shred. Supercharger must be removed to replace coupler. 4-5 labor hours.
Estimated cost: $500-900
Fuel System Issues (Filter, Pump, Injectors)
Occasional · medium severity
Typical onset: 90,000-140,000 mi
Symptoms: hard starting when hot, loss of power under boost, stumbling or hesitation during acceleration, fuel smell from tank area
Fix: The in-tank fuel filter screen clogs, and fuel pumps can fail, especially on cars that were run low on fuel frequently. Fuel filter is not separately serviceable—requires pump module replacement. 2-3 labor hours including tank drop.
Estimated cost: $450-800
Owner tips
Change oil every 3,000-4,000 miles with quality synthetic if you drive hard—this engine lives and dies by oil quality
Replace transmission mount at first sign of clunking; delaying it accelerates transmission wear
If buying used, check compression and do a thorough leak-down test—many have been modified and beat on
Avoid cars with bolt-on mods unless supporting mods (fuel, tuning, cooling) are documented
Inspect supercharger snout area for rubber dust indicating coupler failure
Buy one if it's stock or has documented quality modifications and service records, but budget $2,000-3,000 for likely engine or transmission work within the first year—these are 18-year-old performance cars that have often lived hard lives.
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.
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.
GENERAL MOTORS IS RECALLING CERTAIN MODEL YEAR 2006 CHEVROLET COBALT AND SATURN ION VEHICLES ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE STATES OF ARIZONA AND NEVADA; AND MODEL YEAR 2007 CHEVROLET COBALT, PONTIAC G5 AND SATURN ION VEHICLES ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE STATES OF ARIZONA, CALIFORNIA, FLORIDA, NEVADA AND TEXAS. THE PLASTIC SUPPLY OR RETURN PORT ON THE MODULAR RESERVOIR ASSEMBLY MAY CRACK. IF EITHER OF THESE PORTS DEVELOPS A CRACK, FUEL WILL LEAK FROM THE AREA. IF THE CRACK BECOMES LARGE ENOUGH, FUEL MAY BE OBSERVED DRIPPING ONTO THE GROUND AND VEHICLE PERFORMANCE MAY BE AFFECTED.
Consequence: FUEL LEAKAGE, IN THE PRESENCE OF AN IGNITION SOURCE, COULD RESULT IN A FIRE.
Remedy: DEALERS WILL REPLACE THE FUEL PUMP MODULE FREE OF CHARGE. A SPECIAL COVERAGE WILL BE IMPLEMENTED IN THE SAME TIME FRAME FOR MODEL YEAR 2006 VEHICLES REGISTERED IN ALABAMA, ARKANSAS, CALIFORNIA, FLORIDA, GEORGIA, HAWAII, LOUISIANA, MISSISSIPPI, NORTH CAROLINA, NEW MEXICO, OKLAHOMA, SOUTH CAROLINA, TENNESSEE AND TEXAS AND MODEL YEAR 2007 VEHICLES REGISTERED IN: ALABAMA, ARKANSAS, GEORGIA, HAWAII, LOUISIANA, MISSISSIPPI, NORTH CAROLINA, NEW MEXICO, OKLAHOMA, SOUTH CAROLINA AND TENNESSEE. THE SAFETY RECALL IS EXPECTED TO BEGIN ON OR BEFORE FEBRUARY 4, 2010. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438, SATURN AT 1-800-972-8876 AND PONTIAC AT 1-800-620-7668 OR AT THE OWNER CENTER AT WWW.GMOWNERCENTER.COM.
STRUCTURE · 07V014000
2007-01-18
CERTAIN PASSENGER VEHICLES NOT EQUIPPED WITH OPTIONAL ROOF-MOUNTED SIDE IMPACT AIR BAGS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 201, 'OCCUPANT PROTECTION IN INTERIOR IMPACT.'
Consequence: IN A CRASH, HEAD IMPACT PROTECTION MAY BE INADEQUATE.
Remedy: DEALERS WILL INSTALL ENERGY ABSORBING PLASTIC TO THE HEADLINER TRIM TO REDUCE THE SEVERITY OF HEAD IMPACTS IN A CRASH. THE RECALL BEGAN ON MARCH 21, 2007. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438.
Performance
Horsepower
205hp
Torque
200lb-ft
0–60 mph
6.4sec
Quarter mile
14.9sec
Top speed
143mph
Capability & size
Curb weight
2,935lb
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2006 Chevrolet Cobalt SS 2.0L I4 Supercharged and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.