The 2.4L Ecotec (LEA, LAF, LE5) earned a class-action lawsuit for premature timing chain stretch - typically between 80,000 and 120,000 miles. P0008, P0016, and P0017 codes are the calling cards. Affected vehicles include the Equinox, Terrain, Malibu, and Regal.
High failure rate. Timing chain stretch is documented in class-action litigation. Plan on a $1,500-$2,500 chain job somewhere between 80K and 120K miles.
The factory timing chain stretches past spec, throwing P0008 (engine position) and P0016/P0017 (crank/cam correlation) codes. Driving on a stretched chain risks a jumped chain and bent valves.
View P0008 Diagnosis →Worn PCV diaphragm in the valve cover, plus piston-ring oil control issues, leads to 1qt per 1,000-2,000 miles. Cover replacement is cheap, ring fix is not.
View P0171 Diagnosis →Direct-injection 2.4L Ecotec builds carbon on intake valves. Causes cold-start stumble and rough idle.
View P0301 Diagnosis →The cam phaser actuator can stick or fail outright, throwing P0011 or P0014. Sometimes confused with timing chain stretch - run a chain stretch check first.
View P0014 Diagnosis →External water pump can weep at the gasket around 80,000-120,000 miles. Easy fix.
View P0128 Diagnosis →Run a free AI diagnosis tailored to your exact vehicle. Get the most likely cause and repair estimate in under 30 seconds.
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2010-2014 2.4L Equinox/Terrain/Malibu without documented timing chain replacement after 100K miles.
2018+ Equinox/Terrain switched to a 1.5L turbo - different problems but no chain-stretch lawsuit. 2.4L Ecotecs that have already had the chain done are a good value.
Plan on a $1,500-$2,500 timing chain job at 80K-120K miles, plus oil top-offs and possibly a $300-$500 PCV cover. Lifetime non-routine spend: $2,500-$4,000 over 200K miles.
If your 2.4L is throwing a check engine light, these are the codes most often associated with the problems above. Click any code for full diagnosis steps and typical repair costs.
Yes - multiple class actions have been filed and settled regarding 2010-2017 GM 2.4L Ecotec timing chain stretch. Coverage details vary by state and model year.
$1,500-$2,500 at an independent shop, $2,500-$3,500 at a dealer. The job includes the chain, guides, tensioner, and cam phasers.
Most failures happen between 80,000 and 120,000 miles. Driving with poor oil-change discipline accelerates the failure significantly.
2010-2017 Chevrolet Equinox, GMC Terrain, Chevrolet Malibu, Buick Regal, Buick LaCrosse, and Chevrolet Captiva Sport.
Not safely. A stretched chain that jumps a tooth can bend valves and cost $4,000+ in head work. As soon as P0008/P0016/P0017 appear, get the chain checked.