This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.
full bulletin at NHTSA ↗2007 Buick LaCrosse electrical problems
severe 69 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Failure mileage
Complaints
69
Recalls
0
Avg fix
$850
14fires
When does it fail?
Of the 69 electrical complaints filed for the 2007 Buick LaCrosse, here's the actual mileage breakdown — failures cluster heaviest at 25,000-50,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Owners have filed 69 electrical complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Among the 13 model years of Buick LaCrosse in our records for electrical problems, this one ranks #3 by owner-complaint volume.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering electrical 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 Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radio Frequency Identification Devices when the concern is present. Dealer should also direct their customers to the appropriate section in the Owner manuals that references that the device complies.
full bulletin at NHTSA ↗Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.
full bulletin at NHTSA ↗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 information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
2007 Buick LaCrosse owners describe a pervasive electrical failure affecting the low-beam headlight relay and headlamp driver module (HDM). Failures begin intermittently—headlights flicker on and off—then escalate to total blackout while driving at highway speeds. High beams often remain functional. Multiple owners report the relay or module overheating, smoking, melting inside the fuse box, and in several cases, igniting the underhood fuse block. One case documented a complete fuse panel fire; another showed the main wiring harness and engine compartment burned. Damage costs have reached $2,000 for harness replacement alone.
A secondary pattern involves stalling at various speeds coupled with electrical anomalies: dimming instrument panel lights, high beams activating unexpectedly, loss of all interior and exterior lights, and ABS/traction control warning lamps. Some owners report the dimmer switch shorting and disabling the whole electrical system. One case showed the ignition switch contributing to unintended key rotation and stalling even after recall repair.
GM issued two exterior lighting recalls (14V755000, 15V519000) and one electrical system recall (14V355000) addressing ignition switch and key rotation. However, owners consistently report that dealers could not obtain replacement parts for extended periods—some waiting over two years. One owner described the ignition-switch recall remedy as inadequate: a key ring filler and manual notation that owners forget within months. Reimbursement claims for pre-recall repairs faced delays, with GM requiring multiple recall letters before processing.
Same Buick LaCrosse electrical reports on nearby years: 2005 · 2006 · 2008 · 2009 · 2010
Failure modes owners describe
Low-Beam Headlight Relay/Headlamp Driver Module (HDM) Failure
The low-beam headlight relay or headlamp driver module overheats, melts, and fails inside the fuse box, causing intermittent flickering or complete blackout of low-beam headlights while driving.
When: Typically 37,000–188,000 miles; no specific pattern reported
Symptoms owners cite: Low-beam headlights flicker on and off intermittently; Low-beam headlights fail completely without warning; High beams remain functional; only low beams affected; Burning plastic or electrical smell from under hood; Smoke or flames from fuse box/engine compartment; Relay or module visibly melted or charred inside fuse block
Repairs/costs cited: Owners replaced relays with aftermarket heavy-duty units (costs $60–$180 for parts/labor at independent shops). Dealers unable to supply OEM replacement parts for extended periods (up to 2+ years). One owner reported main wiring harness replacement at cost exceeding $1,700. Another owner paid $616 for fuse panel replacement after fire damage. Repairs ranged from $185 to $2,000.
Recalls/TSBs owners mention: NHTSA Campaigns 14V755000 and 15V519000 (Exterior Lighting) issued. Parts unavailable at dealers during recall period. One owner received recall January 2015 after paying for own repair May 2014; reimbursement delayed over one year pending second recall letter. Dealer also mentioned Technical Services Bulletin (TSB) issued for HDM module.
Underhood Fuse Box Melting and Fire
The underhood fuse block catches fire due to failed relays (particularly headlamp relay) arcing, melting the fuse block assembly and nearby wiring harness. Fire is contained within fuse compartment but causes extensive damage.
When: Various mileages between 45,000–112,000 miles
Symptoms owners cite: Burning smell or burning plastic odor from under hood; Smoke or visible flames coming from fuse box area; Melted relays and fuse block interior; Burned or melted engine wiring harness; Electrical functions lost or intermittent (lights, wipers, etc.); Unintended horn sounding (one case)
Repairs/costs cited: Fuse box replacement with harness repair costs documented at $616–$2,000. One owner paid $1,700 for fuse box and wire bundle replacement. Another owner replaced entire wiring harness. Repairs deferred or incomplete in several cases pending parts availability.
Recalls/TSBs owners mention: Not covered by recalls (14V755000, 15V519000 address lighting; 14V355000 addresses ignition switch). Owners reported GM declined reimbursement for fire-damage repairs not explicitly listed in recall scope. Dealer at one location stated cause could not be determined.
Engine Stalling with Electrical Loss
Vehicle stalls at low or highway speeds (25–70 mph) accompanied by loss of lights, gauge illumination, and warning light activation. Frequently occurs in traffic or on remote roads.
When: Mileages 40,000–196,000; timing unpredictable
Symptoms owners cite: Engine stalls without warning while driving; All instrument panel and warning lights illuminate or go dark; Exterior lights fail (headlights, running lights); Dimmer switch movement causes light failure or high-beam activation; Vehicle restarts but failure recurs within days or weeks; Burning rubber smell after recall repair in one case
Codes mentioned: P0420 (catalytic converter code misdiagnosed in one case)
Repairs/costs cited: One owner misdiagnosed with catalytic converter failure; another had fuel pump and computer/traction control replaced without resolving the issue. Dealers found no stored codes in several cases. Recall 14V355000 (ignition switch remedy: key ring filler and manual note) failed to resolve stalling in at least one case.
Recalls/TSBs owners mention: NHTSA Campaign 14V355000 (Electrical System) issued. Remedy addresses ignition switch key rotation with aftermarket key ring and owner-manual addendum. Owners report remedy ineffective and inadequate (key ring easily forgotten by second owner, manual warnings ignored). Replacement parts unavailable during recall rollout.
Dimmer Switch Short Circuit
The dimmer/headlight control switch shorts out, disabling the electrical system partially or wholly and causing stalling, loss of lights, and erratic behavior.
When: No specific mileage pattern; one case at 25 mph, another at unknown mileage
Symptoms owners cite: Instrument panel lights and headlights dim or go out unexpectedly; Moving dimmer switch causes high-beam activation instead of low-beam; Vehicle stalls or loses all electrical function; Flickering warning lights on instrument panel
Repairs/costs cited: One case required dimmer switch and starter replacement; parts unavailable in immediate area (Tampa, FL). Repair cost exceeded $400 for initial diagnosis and parts procurement.
Recalls/TSBs owners mention: Not explicitly addressed in recall narratives. One owner mentioned AAA garage diagnosed and attempted repair where Buick dealership could not.
Synthesized from 69 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 8 most recent
2008 Chevrolet impala. Vehicle owner had to pay for service theft deterrent for car. Requesting reimbursement. *ta
Tl* the contact owns a 2007 Buick lacrosse. The contact stated that after the vehicle was repaired under NHTSA campaign number: 14v355000 (electrical system), a smell of burnt rubber was present inside the cabin and the vehicle became inoperable. The vehicle was towed to the dealer where it was diagnosed with a short circuit on the electrical system. The vehicle was not repaired. The manufacturer…
Tl*the contact owns a 2007 Buick lacrosse. The instrument panel indicators and headlights dimmed twice. The second time the failure occurred was while driving 70 MPH. When the contact moved the dimmer button, the instrument panel indicators illuminated again, but the high beam headlights illuminated instead of the normal beams. The vehicle was taken to the dealer twice and they found no…
Driving a distance of three miles car stalled five times. Started again each time dealership sold me a new battery three days later--acceleration quit, going down the road in heavy traffic. I engaged the accelerator with no response. Able to pull over and turn off key and then start again and proceed. Dealership told me that the computer showed no problem with the car. Two days later the car…
We were 60 miles from home having dinner. Got in the car after dark to come home, started it and no headlights. Low beam headlights failed to come on whether by auto or manual switching them on. We had high beam but no low beam or daytime running light. This is very dangerous. It is our only vehicle for daily driving. We need this repaired under the 12-1-2014 recall from Buick. *tr
Tl* the contact owned a 2007 Buick lacrosse. While parked, the vehicle caught fire. The fire department extinguished the fire. A police/fire report was filed. The vehicle was destroyed. The manufacturer was made aware of the failure. The cause of the fire was undetermined. The failure mileage was 199,000.
Purchased car 11/2015 with 60k miles. A month later, I turned on the rear defrost while driving. When I came home, I parked and exited the car. The rear windshield shattered.
The headlight control module part of the body control failed causing low beam headlights to be inoperable. I was advised gm issued a technical services bulletin about this issue. A recall notice may be issued . My wife was going to work at 4 am on saturday morning and was forced to use high beams to illuminate the highway and local streets.the defective module was replaced this afternoon .hdm…
Had electrical 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 electrical problem on the 2007 Buick LaCrosse?
It's a meaningful issue. 69 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Across the 43 complaints that reported odometer mileage, most electrical failures cluster between 56,000 and 122,220 miles, with the median around 80,000. A quarter of owners report trouble before 56,000; a quarter make it past 122,220. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $850 for electrical 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 electrical?
No active recalls currently cover electrical 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.