Used Buick LaCrosse 2nd Gen (2010-2016): Buyer's Guide

The 2011 Buick LaCrosse racked up 52 owner complaints in CarComplaints.com's database, more than triple the five logged against the 2015 model. Same generation, same basic platform, wildly different ownership experience. That gap traces to two things GM fixed mid-cycle: a timing chain design on the early 3.6L V6 that stretched under normal driving, and a new eAssist hybrid system that launched in 2012 with a Generator Control Module fault serious enough to prompt a fire-risk recall.

By 2014, both problems were sorted. This generation of LaCrosse, sold from 2010 to 2016 on GM's Epsilon II platform, is quiet, comfortable, and genuinely well screwed together once you know which years and engines to target. Here's what forum threads, NHTSA filings, and owner complaint data say about which one to buy.

This Generation at a Glance

The second-generation LaCrosse debuted for 2010 on GM's Epsilon II platform, shared with the Chevrolet Malibu, Cadillac XTS, and the discontinued Saab 9-5. It replaced the first generation's older W-body chassis with a stiffer structure, better sound insulation, and GM's then-new HiPer Strut front suspension, which is a big part of why this car rides and steers better than its badge might suggest.

The 2010 model year was a transition year, launching with both a 3.0L V6 base engine and a 3.6L V6 upgrade. For 2011, Buick simplified to a 2.4L four-cylinder base and the 3.6L V6 upgrade. The bigger shift landed in 2012: Buick added the eAssist mild-hybrid system, revised the 3.6L V6's internals (a running change GM tracks as LLT to LFX), and swapped the three-letter trim names (CX, CXL, CXS) for equipment-group trims. The generation ran through 2016 before the Avenir-styled third generation arrived for 2017 on an unrelated platform.

What owners consistently praise about this generation, across model years and forum threads, is how quiet and settled it feels at highway speed. That's the HiPer Strut suspension and the extra sound deadening doing their job; it's a car built to isolate the driver from road noise and harshness, not to feel sporty. If you're cross-shopping for a back-road canyon carver, this isn't it. If you want a comfortable, well-isolated cruiser that competes on quiet rather than quick, this generation delivers on that specific promise.

Current pricing and inventory: Buick LaCrosse market data, with per-year pages for 2010, 2011, 2012, 2013, 2014, 2015, and 2016.

Powertrain & Trim Breakdown

3.6L V6 (LLT, 2010-2011)

The early 3.6L V6, GM's internal code LLT, is the engine to be careful with. It's prone to premature timing chain stretch, caused by an early valve cover gasket design that let the engine consume oil faster than its oil-life monitor accounted for. Starved of lubrication, the timing chain wears and stretches. The first symptom is a rattle on cold start that fades as the engine warms, often paired with trouble codes P0008 or P0016. Left alone, it progresses to a rough idle, lost power, and reduced fuel economy. Because the 3.6L is an interference engine, a chain that skips or fails can bend valves and total the motor. A full timing chain kit replacement, including tensioners and guides, runs 10 to 14 hours of shop labor and commonly lands between $1,800 and $3,000 depending on region, more if the interference damage already happened. Buick Forums threads on this engine consistently trace the root cause back to inadequate lubrication from that early gasket design, and owners who kept up with frequent, full-synthetic oil changes report far fewer failures than those who stretched intervals.

GM revised the engine's internals for 2012, switching the internal code to LFX and bumping output to 303 hp. Forum consensus and GM's own parts documentation treat the timing chain issue as resolved from that point forward; 2012-and-later 3.6L LaCrosses don't show up in the same rattle-and-stretch threads that dominate 2010-2011 discussions.

Both LLT and LFX versions were available with all-wheel drive, which adds a Haldex-based transfer case behind the transmission. Owners on Buick Forums report "Service AWD" dash messages tracing to wheel speed sensor faults or a sticking transfer case actuator, and at least one documented 2013 AWD LaCrosse needed both a transmission rebuild and a transfer case replacement by 72,000 miles. AWD adds real complexity and cost on top of an already known-quantity 6-speed automatic, so budget for it in your inspection, not just your test drive.

3.0L V6 and base 2.4L I4 (2010-2011)

The 2010-only 3.0L V6 and the 2010-2011 base 2.4L I4 were both short-lived, lower-volume choices that Buick dropped as the lineup simplified. There's less forum documentation on either compared to the 3.6L and eAssist, which itself is a signal: low sales volume means less community troubleshooting data if something goes wrong. If you're looking at one of these, budget extra time for a pre-purchase inspection since there's a thinner paper trail on what tends to fail.

2.4L I4 eAssist mild hybrid (2012-2016)

The eAssist system pairs the 182-hp 2.4L four-cylinder with an 11-kW electric motor and a small lithium-ion battery to improve fuel economy to 28-29 mpg combined, a real step up from the 20-21 mpg V6. Owners on Buick Forums describe the eAssist LaCrosse as noticeably less powerful than the V6 in daily driving, and multiple threads mention a belt squeak during regenerative braking that traces to an engine pulley bearing, one owner reported a dealer that wouldn't cover it under warranty.

The more serious issue: GM recalled 2012-2013 eAssist LaCrosse and Regal models, along with the 2013 Chevrolet Malibu Eco, for a Generator Control Module fault. A malfunctioning GCM could cause a gradual loss of battery charge and, in some cases, a burning or melting odor, smoke, or fire in the trunk, where the eAssist battery pack lives. If you're looking at a 2012-2013 eAssist LaCrosse, run the VIN through CarScout's recall lookup tool before you commit, and ask the seller directly whether the GCM was inspected or replaced.

Owners on Buick Forums also flag the eAssist engine as sensitive to oil quality, several threads specify it requires full-synthetic dexos oil and changes at least every 5,000 miles or 12 months, tighter than the interval some owners assume for a "hybrid" powertrain. Skipping that schedule is a bad idea on any GM Ecotec, worse on one already carrying a documented lubrication-related recall history in this same platform family.

The eAssist's 130-volt lithium-ion battery lives in the trunk behind the rear seats and carries an 8-year warranty from GM, but that clock is long expired on every car in this generation. If it fails out of warranty, a used replacement pack runs around $1,000 before labor and shipping, a refurbished unit runs $1,400 to $2,000, and a dealer-sourced new pack with installation can run considerably higher. Ask any eAssist seller directly whether the battery has ever thrown a warning light or needed service, since that's a far more expensive repair than anything on the V6 side of this lineup.

Trim Levels

Buick renamed its trim structure twice in this generation: three-letter names (CX, CXL, CXS) through 2011, seven equipment groups for 2012, then a simplified five-trim lineup (Base, Leather, Premium I, Premium II, Touring) from 2013 on. The equipment differences matter less than the engine underneath, a loaded 2011 CXL with the LLT V6 is still an LLT-engine car with the same timing chain risk as a base CX. Shop the powertrain and model year first, trim second.

The 2016 model year's Premium AWD added 20-inch wheels as its main differentiator; don't expect a meaningfully different car than 2014-2015 otherwise. The IntelliLink touchscreen, standard across most trims from 2012 on, is worth testing directly: the touch-sensitive digitizer layer degrades with heat and sun exposure over time, and ghost touches, frozen screens, or a black display are common enough on 2014-2016 cars that owners on Buick Forums have written up their own reset procedures (holding the Home and Fast Forward buttons for 10 seconds).

Which Model Years to Target Within This Gen

The 2010 and 2011 model years carry the LLT V6's timing chain risk and, per CarComplaints.com, the highest complaint volume of the generation, 51 and 52 total complaints respectively against single digits by 2015. Both years are also tied to a regional rear suspension recall covering the Northeast, Midwest, and mid-Atlantic states specifically, so where the car spent its life matters. Both aren't dealbreakers if the timing chain has already been replaced with documentation, but they're the years to negotiate hardest on or walk away from without service records.

2012 and 2013 are the sweet spot if you want the eAssist hybrid, since the V6's timing chain problem is fixed and the eAssist GCM recall, once completed, resolves the fire risk. These two years also tend to be the cheapest entry point into a post-fix LaCrosse, since they're old enough to have depreciated hard but new enough to skip the LLT-era risk entirely.

2014 through 2016 are the strongest picks overall: the complaint volume drops sharply, the tech gets meaningfully better (adaptive cruise and lane-keep assist from 2014, 4G LTE and a standard backup camera by 2015, CarPlay and Android Auto by 2016), and you're buying into a fully sorted platform with two extra years of running changes behind it. The tradeoff is price. You're paying more for a car that's fundamentally the same underneath as a 2012 or 2013, just with a longer feature list and a shorter list of forum threads written about it. If you want the newest tech and the most iterated version of this generation before the 2017 redesign, 2016 is the one to chase. If budget matters more than CarPlay, a well-documented 2013 gets you the same drivetrain confidence for less money.

Pre-Purchase Inspection Checklist

If it's a 3.6L V6 (any year):

• Start the engine cold. Listen for a rattle in the first few seconds that fades as it warms up. That's the classic timing chain stretch symptom on LLT-engine (2010-2011) cars specifically. Walk away from a cold rattle unless the seller can document a chain replacement.
• Pull the codes even if the check engine light is off. P0008 or P0016 indicate timing chain wear before it gets loud enough to hear.
• Ask for full synthetic oil change records. Sparse or DIY-only records on a 2010-2011 V6 are a red flag given how directly oil starvation ties to this engine's known failure.

If it's an eAssist model (2012-2016):

• Confirm the Generator Control Module recall was completed. Run the VIN through CarScout's recall lookup tool and ask the seller for the service record, not just their word.
• Listen for a belt squeak during regenerative braking (coasting to a stop). It's a known pulley bearing issue that isn't always covered under warranty once it appears.
• Check that the hybrid battery light and system status are clean on the dash; a flickering or stuck warning suggests the GCM issue may be recurring even after a prior repair.

On any 2nd-gen LaCrosse:

• If it's AWD, ask specifically about "Service AWD" messages in the vehicle's history and get the transfer case fluid condition checked; this system has a documented failure pattern independent of the engine.
• Test every function of the IntelliLink touchscreen, especially on 2014-2016 cars. Ghost touches, dead zones, or a black screen mean a touchscreen module replacement.
• Check for active coolant leaks near the water pump front seal, a common wear item on this platform that's cheap to fix early and expensive to ignore.
• Confirm the rear suspension toe link recall (2010-2011 only, regional) was completed if the car has northern or coastal registration history.
• Cycle every door lock, power and manual, from both the key fob and interior switches. Door lock actuators are a known wear item on this platform; one failed actuator is a $233 to $309 repair, but sellers who've ignored several can be looking at a $1,600 fix once the body control module gets involved.

Running Costs

A 6T70 transmission rebuild, if you need one, runs $1,000 to $3,500 depending on whether the shop uses a salvage-yard unit or a full rebuild, and average lifespan across owner reports lands between 130,000 and 180,000 miles. Timing chain work on an LLT-engine V6 adds $1,800 to $3,000 if you catch it before catastrophic failure. A failed eAssist battery pack, out of its long-expired 8-year warranty, runs $1,000 for a used unit and up from there.

Day-to-day, this platform is a fairly normal midsize sedan to own. RepairPal pegs average annual maintenance at $569, brake system inspections typically run $122 to $179, and a tire rotation and balance runs $110 to $161. Insurance is a genuine advantage here: LaCrosse rates average meaningfully less than the typical sedan, since it's not a car insurers associate with aggressive driving or high theft rates. Door lock actuators are the one routine wear item worth budgeting for regardless of engine, expect one to need replacement at some point in ownership.

FAQ

Is the 2nd-gen Buick LaCrosse 3.6L V6 reliable? The 2012-2016 LFX version is solid. The 2010-2011 LLT version has a well-documented timing chain stretch problem tied to oil starvation. Confirm timing chain service history before buying a 2010 or 2011 V6, and it's a reasonably dependable engine either way once that risk is addressed.

What year Buick LaCrosse should I avoid? 2010 and 2011 carry the highest complaint counts in this generation and the LLT V6's timing chain risk. They're not automatic dealbreakers with documented maintenance, but they require more scrutiny than 2012 and later.

Is the Buick LaCrosse eAssist worth it? If fuel economy matters more than power, yes: 28-29 mpg combined versus 20-21 for the V6 is a real difference. Confirm the Generator Control Module recall was completed on 2012-2013 models before buying, since it addressed a documented fire risk.

How many miles does a 2nd-gen Buick LaCrosse last? Owners regularly report 150,000-plus miles with routine maintenance, and the 6T70 transmission's average reported lifespan runs 130,000 to 180,000 miles before needing major work. Full-synthetic oil on schedule matters more on this platform than most.

Is the Buick LaCrosse AWD reliable? It adds a documented failure pattern, transfer case actuator and wheel speed sensor faults, on top of the engine and transmission risks that apply to any trim. It's not unreliable, but it's added mechanical complexity worth budgeting for in a pre-purchase inspection, especially if the car spent winters somewhere that salts the roads.

The Bottom Line

The 2014-2016 LaCrosse, with either the LFX V6 or the eAssist hybrid, is the sweet spot in this generation: the timing chain problem is fixed, the GCM recall is a known quantity to check off, and the tech is the most current the platform got before the 2017 redesign. Run every VIN through a recall check before you buy, especially on a 2012-2013 eAssist model. If you want the quietest, most sorted version of this car, an AWD LaCrosse from 2010-2016 with a clean transfer case history and full-synthetic oil records at every interval is a comfortable, well-built used sedan that doesn't get enough credit for either.

Sources: NHTSA recalls database (campaigns 20V764000, 21V00F000, 11V404000, 14V317000), CarComplaints.com year-by-year complaint data, Buick Forums (buickforums.com) owner threads on timing chain, eAssist, AWD, and IntelliLink issues, RepairPal, TrueDelta, and EPA fuel economy data. See the full Buick LaCrosse market data for pricing and inventory.