This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
full bulletin at NHTSA ↗2007 Buick LaCrosse engine problems
severe 10 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Complaints
10
Recalls
0
Avg fix
$3,100
1crash
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
full bulletin at NHTSA ↗This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
full bulletin at NHTSA ↗This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
full bulletin at NHTSA ↗This service bulletin provides technicians with information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of the 2007 Buick LaCrosse describe repeated engine stalling at speeds ranging from idle to 70 mph. In several cases, the vehicle quit without illuminating a check engine light, leaving two dealerships unable to pull error codes at all. One owner heard clanking before stalling; dealer reprogramming and throttle body replacement gave only 3–4 days of relief before the stalling returned. Another owner's engine seized mid-drive at 25 mph, trapping the ignition key; replacing the catalytic converter did not fix the problem.
A 2014 recall notice (Campaign 14V355000 for electrical issues) reached multiple owners, but Buick stated parts were unavailable—one 80-year-old couple couldn't get their vehicle repaired and called for a loaner while waiting. One owner reported a spark from the ignition with complete no-start. A mechanic blamed a crank sensor and steering module; another owner's engine wire harness was found damaged and replaced. Despite these repairs, some vehicles continue to fail. The stalling events placed owners in dangerous situations—one had to be towed after stalling in a turn lane, another on a highway emergency lane.
Same Buick LaCrosse engine reports on nearby years: 2005 · 2010
Failure modes owners describe
Stalling at speed or idle
Engine shuts down unexpectedly while driving or stopped at lights. Multiple owners report stalling at various speeds (25–70 mph) with difficulty restarting. Some incidents required towing; others restarted after several attempts.
When: 82,000 mi; 100,000 mi; 16,755 mi; during 2014 recall period; 110,000 mi; 71,000 mi
Symptoms owners cite: Engine dies while driving or stopped; Difficulty restarting vehicle; No warning lights in some cases; Check engine light in one case; Vehicle coasts to shoulder
Codes mentioned: No error codes (complaints #1, #2 early diagnostics), Error codes present but unnamed (complaint #3)
Repairs/costs cited: Crank sensor replacement (complaint #1); engine reprogramming with transmitter and throttle body replacement (complaint #3, temporary relief 3–4 days); catalytic converter replacement (complaint #2, ineffective); engine wire harness replacement (complaint #7)
Recalls/TSBs owners mention: NHTSA Campaign 14V355000 (Electrical System) issued; parts unavailable per complaints #4, #6; manufacturer denied other complaints in complaint #1
Engine seizure
Engine seized unexpectedly during low-speed driving. Owner reported key unable to turn in ignition after seizure; vehicle restarted after ~5-minute wait.
When: 100,000 mi (May 2022)
Symptoms owners cite: Engine seized while driving 25 mph; No warning light illuminated; Ignition key stuck/unable to turn
Repairs/costs cited: Catalytic converter replaced; failure recurred
Ignition spark and no-start
Spark emission from ignition switch with complete failure to start. Undiagnosed condition reported once at 92,300 miles.
When: 92,300 mi
Symptoms owners cite: Spark emitted from ignition; Vehicle will not start
Intermittent engine power loss
Engine loses power intermittently during operation; owner noted no apparent reason for loss of power events.
Symptoms owners cite: Loss of engine power; Intermittent nature
Synthesized from 10 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Had engine trouble with your 2007 Buick LaCrosse?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2007 Buick LaCrosse?
It's a meaningful issue. 10 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Based on the 10 complaints filed, engine issues most often appear around 79,554 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2007/Buick/LaCrosse.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.