GM 2.4 Ecotec head gasket cost
The Equinox, Terrain, Malibu, and other Chevrolet, Buick, Pontiac, and Saturn vehicles using the 2.4L Ecotec. $1,800 to $3,200 typical. The oil consumption issue is the precursor that owners ignore until it becomes a head gasket bill.
Quick answer
$1,800 to $3,200 typical. Among the cheaper modern HG jobs.
The 2.4L Ecotec is GM's mid-2000s inline-4 that appeared across roughly twenty different vehicles spanning Chevrolet, Buick, GMC, Pontiac, Saturn, and Cadillac platforms. The most common chassis owners encounter in 2026 are the Equinox and Terrain (2010 to 2017), the Malibu (2008 to 2016), and the Cruze with its 1.4-turbo sibling engine. Head gasket failure is not endemic to the Ecotec the way it is to the 5.4 Triton 3V, but the engine's well-documented oil-consumption pattern (a worn PCV system pulling oil into the intake, plus ring-pack wear) creates a hot-running condition that eventually causes head gasket failure on high-mileage examples.
The repair itself is on the easier end of modern engines: one cylinder head, inline layout, no turbocharger to remove on the naturally-aspirated 2.4 (different story for the 1.4T Cruze and the 2.0T LNF Cobalt SS). Labor lands at 9 to 14 hours, parts at $120 to $300 for the gasket set, machine shop at $200 to $400 for the single head. A competent independent shop quotes the job at $1,800 to $2,800 in mid-rate metros; high-rate cities push it to $3,200.
By chassis
Cost by vehicle
| Vehicle | Engine | Repair cost | Note |
|---|---|---|---|
| Chevy Equinox (2010-2017) | 2.4L LAF / LEA | $1,800 - $3,000 | Most common application. Oil consumption is the lead complaint; HG is secondary. |
| GMC Terrain (2010-2017) | 2.4L LAF / LEA | $1,800 - $3,000 | Sister vehicle to Equinox. Identical engine and procedure. |
| Chevy Malibu (2008-2016) | 2.4L LE5 / LAF / LEA | $1,700 - $2,900 | Slightly easier access than Equinox SUV body. |
| Chevy Cobalt / HHR (2008-2010) | 2.4L LE5 / LAT | $1,500 - $2,600 | Smaller cars, simpler bays. Cobalt SS is a different engine (LNF 2.0T). |
| Chevy Cruze (2013-2019, 1.4T) | 1.4L LUV / LUJ | $1,600 - $2,800 | Different engine (1.4T) but same era and same known thermostat-housing failure pattern. |
| Saturn Vue / Aura (2008-2010) | 2.4L LAT | $1,700 - $2,900 | Discontinued brand. Parts via GM dealer network. |
| Pontiac G6 / Solstice (2007-2010) | 2.4L LE5 | $1,700 - $2,800 | Discontinued brand. Same parts pipeline as Chevrolet. |
| Buick LaCrosse / Verano | 2.4L LAF | $1,900 - $3,100 | Buick badge premium at dealer. Identical to Chevy Malibu mechanically. |
The precursor pattern
Oil consumption is what kills 2.4 Ecotec head gaskets
The 2010 to 2013 Equinox and Terrain became the public face of the oil consumption issue, but the underlying pattern exists across most 2.4 Ecotec engines. The PCV system on the cylinder head cover routes crankcase vapors back to the intake. A combination of small internal passages, ring-pack design, and the high-temperature operating environment of a small displacement engine doing turbocharged-level work means oil mist is pulled past the PCV and into the combustion chamber. The owner notices the engine using oil between changes. Two or three oil changes pass with the level dropping. By 100,000 miles many Ecotec engines are consuming a quart every 1,500 to 3,000 miles.
What this does to the head gasket: low oil level reduces piston cooling. Cylinders run hot. The aluminum head warps subtly. The MLS head gasket compensates for a while, then begins to leak combustion gases into the coolant or coolant into the cylinders. By the time the owner sees white smoke or milky oil, the engine has been signaling distress for many months through oil consumption alone.
Addressing oil consumption early is the single most cost-effective preventative move. The PCV system update (an updated PCV valve and a modified breather hose, $80 to $200 in parts) resolves a significant fraction of cases. Owners who never get the PCV addressed are the ones who eventually pay for the HG repair.
Class action context
What the Sloan v. GM settlement covered (and did not)
The Sloan v. General Motors class action filed in 2012 covered owners of 2010, 2011, and 2012 Chevrolet Equinox and GMC Terrain vehicles with the 2.4L Ecotec engine. The settlement was approved in 2018 and provided reimbursement for repair costs tied to documented excessive oil consumption. Claim windows have since closed. The case docket is publicly available via PACER (case 12-cv-08386, Northern District of Illinois).
What this means for current owners: the settlement does not extend to head gasket repair as a standalone claim, but it does establish the oil consumption pattern as a documented manufacturing-related issue. If you are negotiating with a Chevrolet dealer or GM customer service on an Equinox or Terrain with documented oil-consumption service history, citing the Sloan settlement context can sometimes unlock goodwill assistance, especially if the vehicle is within 10 years of original sale. Worth a phone call. Do not expect a full repair to be covered out of warranty.
For owners of non-Equinox/Terrain 2.4 Ecotec applications (Malibu, Cobalt, HHR, etc.) the same engineering pattern exists but no settlement covers them. GM has occasionally extended goodwill on a case-by-case basis for documented low-mileage failures.
The alternative
When a used long-block beats a head gasket repair
A common scenario: 2012 Equinox with 140,000 miles, oil consumption for the last 40,000, now showing white smoke and a coolant loss. A pure head gasket repair will run $2,200 to $2,800. The engine continues to consume oil because the rings and PCV were not addressed. Twelve months later, the owner is back with another problem, having paid $2,500 for a six-month reprieve.
A used 2.4 Ecotec long-block from a junkyard runs $900 to $1,800 plus $400 to $800 to swap (the swap is largely the same labor as a head gasket job because the engine is coming out anyway in many cases). Total $1,300 to $2,600 for a fresher engine with unknown but presumably better internal condition. A reman long-block from a national rebuilder runs $2,500 to $4,000 with the PCV updated, ring pack refreshed, and a 24 to 36 month warranty. Total install cost lands at $3,200 to $4,800 for what amounts to a new-engine-life-reset.
See short block vs long block cost for the full comparison and repair vs replace for the decision framework.
Frequently asked
Common 2.4 Ecotec head gasket questions
Is the 2.4 Ecotec a known head gasket failure engine?+
The 2.4 Ecotec is much more famous for excessive oil consumption than for head gasket failure. The two issues are related: the oil consumption is caused by a PCV system that pulls oil into the intake, the cylinders run lean and hot, the head warps, and eventually the gasket fails. If you address the oil consumption early (PCV update, ring re-set, top engine clean) you can often avoid the HG failure entirely. By the time the HG goes, the engine has typically had oil-consumption symptoms for tens of thousands of miles.
What is the Sloan v. GM settlement and does it cover head gaskets?+
Sloan v. General Motors was a class action covering oil consumption in the 2.4 Ecotec engines used in 2010 to 2013 Equinox and Terrain. The settlement covered repair costs related to the oil consumption pattern but did not directly cover head gasket replacement except where directly tied to documented oil-consumption damage. Claim deadlines have passed, but the case is widely referenced in service-history disputes when a vehicle has oil-consumption history and a subsequent HG failure. Public docket: see PACER under case 12-cv-08386 (Northern District of Illinois).
Should I replace the engine instead of the head gasket?+
On a high-mileage Equinox or Terrain (over 130,000 miles) with documented oil consumption history, a used or reman long-block is often the better option. Used 2.4 Ecotec long-blocks run $900 to $2,000 with limited warranty; reman runs $2,500 to $4,000 with 12 to 24 month warranty. A pure head gasket repair on an engine with worn rings and oil-consumption damage means the oil consumption returns within months. Sometimes you want a fresh long-block, not a patched old one.
Why does this engine cost less to repair than a V6 or V8?+
One cylinder head instead of two. Inline 4-cylinder layout means simpler access. Smaller machine shop bill (one head, $200 to $400 instead of two heads at $400 to $800). Fewer head bolts to replace. Less coolant capacity. The 2.4 Ecotec is genuinely on the easy end of HG repair complexity, which is why the cost lands at the lower end of the national average even with packaged related work.
What does a competent shop check before quoting the HG repair?+
Compression test (or leak-down) on all four cylinders. Oil consumption history from the owner. PCV valve and breather function. Cooling system pressure test to confirm the leak is internal not external. Block test (combustion gases in coolant). A shop that pulls the head before doing those tests is gambling with your money. The same symptoms can mean PCV ($60 to $200) or HG ($2,500). The diagnostic cost is $50 to $150 and saves the wrong-repair bill.
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Cross-portfolio: Equinox alternator cost (sister site, same chassis different system).