2016 Buick LaCrosse Problems: 2 Issues Every Owner Should Know

2016 Buick LaCrosse Problems: 2 Issues Every Owner Should Know | Au7o

All 2 Known Issues

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On the 2010-2016 Buick LaCrosse 3.6L LFX/LLT V6, the GM 3.6L LLT (2007-2011) and LFX (2012+) "High Feature" V6 in LaCrosse, Enclave, Acadia, Traverse, CTS, Cadillac SRX, and many others suffers timing chain stretch typically between 80,000-150,000 miles. Root cause is oil-related — original OLM intervals (up to 12,000 miles) starved the chain of fresh oil. Excessive oil consumption (LLT also has a known consumption issue) accelerates wear.

This issue also affects: Buick LeSabre, Buick Park Avenue, Buick Cascada

Common Symptoms

cold start rattle
check engine light
extended cranking
misfire
low oil between changes

How to Fix

Full timing chain kit ($2,000-$3,500 incl. labor) — both primary and secondary chains, all tensioners and guides. Switch to 5,000-7,500 mile oil intervals with full-synthetic dexos1 5W-30. LLT engines may also need PCV valve replacement to reduce oil consumption (TSB 10-06-01-007).

Typical repair cost:$2,000 - $4,500

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Manually Verified

High Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date

On the 2012-2016 Buick LaCrosse, laCrosse models equipped with the eAssist mild-hybrid system suffer recurring charging and 12V battery problems tied to the Generator Control Module and the hybrid battery energy control module. Owners report parasitic battery drain, no-start conditions, and "Service Battery Charging System" messages. GM issued a recall (NHTSA 13V173000) for a Generator Control Module malfunction on eAssist cars, and dealers ran a module/battery exchange program through GM TAC.

Common Symptoms

Service Battery Charging System warning message
Battery drains overnight / parasitic draw
No-start or intermittent no-start
Reduced or lost hybrid assist and fuel economy
Stalling

How to Fix

Have the dealer diagnose the Generator Control Module and Battery Energy Control Module per the GM exchange/recall program; replace failed modules and the 12V battery as needed. Check for the open recall by VIN. Inspect the hybrid battery control module wiring harness for shorts when chasing parasitic drain.

Typical repair cost:$500 - $2,500

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Community Reported

High ConfidenceVerified0 reportsLast reported by owners Invalid DateReviewed Jun 2026

⚠️NHTSA Recalls13 recalls

AIR BAGS:FRONTAL

General Motors LLC (GM) is recalling certain model year 2014-2016 Buick Lacrosse and Chevrolet Spark EV, Caprice PPV and SS vehicles, 2014-2017 Buick Encore and Chevrolet Corvette, Silverado 1500 and GMC Sierra 1500 vehicles, 2015-2016 Cadillac Escalade and Escalade ESV, Chevrolet Tahoe, Trax, Suburban and Silverado 2500 and 3500 and GMC Yukon and Yukon XL vehicles, and 2015-2017 GMC Sierra HD 2500 and 3500 vehicles. While being previously remedied for recall 16V-651, the affected vehicles may not have received the complete software update necessary to remedy the recall condition. Without the update, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.

Campaign #17V43700010/07/2017

AIR BAGS:FRONTAL

General Motors LLC (GM) is recalling certain model year 2015-2017 Chevrolet Silverado 2500 HD, 3500 HD, Tahoe, Suburban, GMC Sierra 2500 HD and 3500 HD, GMC Yukon, GMC Yukon XL, Cadillac Escalade and Cadillac Escalade ESV vehicles and 2014-2017 Chevrolet Corvette, Silverado 1500, Trax, Caprice Police Pursuit Vehicle, GMC Sierra 1500, Buick Encore, and 2014-2016 Buick Lacrosse, Chevrolet Spark EV and SS vehicles. In the affected vehicles, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.

Campaign #16V65100008/09/2016

AIR BAGS:SIDE/WINDOW

General Motors LLC (GM) is recalling certain model year 2015 Buick LaCrosse, Cadillac XTS, Chevrolet Camaro, Equinox, Malibu, and GMC Terrain vehicles. The affected vehicles have front seat-mounted side impact air bags whose inflator may rupture upon its deployment.

Campaign #15V66600016/10/2015

SUSPENSION:REAR

General Motors, LLC (GM) is recalling certain 2013 Buick Regal, Chevrolet Malibu, and Buick Lacrosse vehicles sold or ever registered in Connecticut, Delaware, the District of Columbia, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, or Wisconsin. These vehicles may have rear toe links that received excessive electrocoating (e-coat) corrosion protection, which could cause the e-coat to become brittle and break away when contacted by road debris. Over time, the e-coat may chip away, exposing the metal toe link and making it more susceptible to corrosion. Corrosion may eventually cause the toe link to thin and ultimately fracture.

Campaign #21V63300012/08/2021

ELECTRICAL SYSTEM

General Motors LLC (GM) is recalling certain model year 2014 Buick LaCrosse vehicles manufactured April 30, 2013, to September 1, 2013. In the affected vehicles, a wiring splice in the driver's door may corrode and break, resulting in the absence of an audible chime to notify the driver if the door is opened while the key is in the ignition. Additionally, the Retained Accessory Power (RAP) module may stay active for ten minutes allowing the operation of the passenger windows, rear windows, and sunroof. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) numbers 114, "Theft Protection and Rollaway Prevention," and 118, "Power-Operated Window, Partition, and Roof Panel Systems."

Campaign #14V31700012/06/2014

+ 8 more recalls. Check all on NHTSA.gov

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

Frequently Asked Questions

What are the most common Buick LaCrosse problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2016-2016 Buick LaCrosse has 2 documented issues. The most frequently reported are: LaCrosse 3.6L LLT/LFX Timing Chain Stretch, eAssist 12V Battery Drain and "Service Battery Charging System" Warnings. Of these, 2 are rated critical and should be addressed promptly.

Is the Buick LaCrosse reliable?

The 2016-2016 Buick LaCrosse has 2 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 2 issues are rated critical: LaCrosse 3.6L LLT/LFX Timing Chain Stretch and eAssist 12V Battery Drain and "Service Battery Charging System" Warnings. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Buick LaCrosse problems?

Repair costs for known Buick LaCrosse issues range from $500 to $4,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, LaCrosse 3.6L LLT/LFX Timing Chain Stretch, typically costs $2,000-$4,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2010-2016 Buick LaCrosse LaCrosse 3.6L LLT/LFX Timing Chain Stretch?

The GM 3.6L LLT (2007-2011) and LFX (2012+) "High Feature" V6 in LaCrosse, Enclave, Acadia, Traverse, CTS, Cadillac SRX, and many others suffers timing chain stretch typically between 80,000-150,000 miles. Root cause is oil-related — original OLM intervals (up to 12,000 miles) st… Repairs typically run $2,000-$4,500. Severity: high.

What is the 2012-2016 Buick LaCrosse eAssist 12V Battery Drain and "Service Battery Charging System" Warnings?

LaCrosse models equipped with the eAssist mild-hybrid system suffer recurring charging and 12V battery problems tied to the Generator Control Module and the hybrid battery energy control module. Owners report parasitic battery drain, no-start conditions, and "Service Battery Char… Repairs typically run $500-$2,500. Severity: high.

2016 Buick LaCrosse Problems: 2 Issues Every Owner Should Know

All 2 Known Issues

2010-2016 Buick LaCrosse: LaCrosse 3.6L LLT/LFX Timing Chain Stretch#

Common Symptoms

How to Fix

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2012-2016 Buick LaCrosse: eAssist 12V Battery Drain and "Service Battery Charging System" Warnings#

Common Symptoms

How to Fix

Research This Issue

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Other Buick Models

Frequently Asked Questions

What are the most common Buick LaCrosse problems?

Is the Buick LaCrosse reliable?

How much does it cost to fix common Buick LaCrosse problems?

What is the 2010-2016 Buick LaCrosse LaCrosse 3.6L LLT/LFX Timing Chain Stretch?

What is the 2012-2016 Buick LaCrosse eAssist 12V Battery Drain and "Service Battery Charging System" Warnings?