The 2013 Buick LaCrosse shows a clear electrical reliability problem. Engine stalls recur unpredictably at traffic lights and highway speeds, sometimes without warning lights. Battery charging system failures are common—owners report the check engine and battery warning lights coming on, then engine cutout. In several cases, multiple battery replacements don't fix the problem; one owner spent $4,000 in repair costs since November 2015 and the issue persisted.
Camshaft sensor failures have been documented, causing stalls with no power for braking or steering. Dealers acknowledge the defect exists but struggle with parts availability.
The eAssist hybrid system's wiring harness has caught fire in at least one documented case, melting the rear bumper and tail lights. GM's hand-wired harness inventory shortage delayed repair by at least a month.
Owners report display screens and rear cameras blackout while driving, forcing them to pull over. One owner's display went completely black while on city streets and highways; a full monitor replacement failed to resolve it.
Several owners found their VINs excluded from recall campaign 13V173000 (Electrical System) despite experiencing identical symptoms—burnt wiring, stalling, and battery drains. Auto-stop/restart failures prevent the engine from restarting in eco mode at traffic lights. Power loss events affect steering and locks simultaneously. One incident involved a vehicle rolling backward after the driver shut it off with the push-button ignition, killing the driver and injuring a bystander.
Failure modes owners describe
Camshaft Sensor Failure
Sensor failure triggers check engine light and engine stall without warning, leaving vehicle with no power and compromised braking/steering at speed. Dealers acknowledge the defect but parts availability is poor and diagnosis is slow.
When: Between 35,000–88,000 miles; often recurring after dealer repair attempt
Symptoms owners cite: engine stalls mid-drive; check engine light illuminates; loss of power; inability to restart immediately; requires 15–30 minutes before restart
Codes mentioned: camshaft sensor, P1A6F
Repairs/costs cited: Dealer repair, part availability issues; failed repair on second attempt documented
Battery Charging System Failure
Alternator or charging circuit malfunction causes battery to discharge while driving. Check engine light and battery warning light come on. Vehicle stalls at stop lights or while idling. Multiple battery replacements do not resolve issue; some owners report burnt wiring at battery terminals linked to electrical recall campaign 13V173000.
When: 30,000–88,000 miles; recurring pattern one year after prior repair
Symptoms owners cite: check engine light flashing; battery warning light illuminates; vehicle stalls while idling or stopping; loss of brightness in radio/navigation; whining sound on engine restart; burning odor from trunk area; reduced battery power
Codes mentioned: low voltage, battery charging system fault, burnt wiring
Repairs/costs cited: Battery replaced multiple times (up to 4 replacements in one case); failed to resolve issue. Burnt wiring found by independent mechanic. One owner spent approximately $4,000 on repairs since November 2015.
Recalls/TSBs owners mention: Recall campaign 13V173000 (Electrical System); however, many affected VINs were excluded from recall. GM stated 'no open recall' to some owners whose VINs were not included.
Hybrid/eAssist Wiring Harness Fire
Wiring harness for eAssist hybrid system overheats and ignites, causing fire in rear bumper and passenger side. Parts inventory shortage delays repair; GM produces wiring harness by hand and only stocks assembly-line inventory.
When: Early ownership; one documented fire at 4/6/2013
Symptoms owners cite: flames from rear bumper; melting of rear bumper and tail lights; smoke/fire
Codes mentioned: eAssist wiring harness defect
Repairs/costs cited: Vehicle in body shop for one month; eAssist wiring harness unavailable; GM could not provide delivery date (quoted 2 weeks to 6 months)
Recalls/TSBs owners mention: Recall campaign identified after fire occurred; owner discovered recall via web search, not manufacturer notification
Vehicle Stall During Drive (Electrical/Charging Failure)
Engine stalls without warning while driving at various speeds (30–65 mph), including at highway speeds and traffic lights. Loss of steering assist and braking power. Vehicle may restart after delay or require multiple attempts. Often accompanied by battery or check engine light, or no warning lights at all. Some cases involve BCM malfunction and low-voltage communication errors.
When: 9,000–88,000 miles; 15 minutes or more into drive
Symptoms owners cite: sudden engine stall at speed; loss of power steering; loss of braking assist; delayed or difficult restart; lurching/jerking before stall; battery warning light (sometimes); check engine light (sometimes); no warning lights (sometimes)
Codes mentioned: low voltage communication, EPROM errors, BCM malfunction, generator control module (P1A6F)
Repairs/costs cited: Dealer unable to reproduce failure in multiple cases; some diagnoses related to battery or electrical system but repairs unsuccessful
Display/Screen and Camera Blackout
Navigation screen, rear-view camera, and heads-up display lose power intermittently while driving. Display may fade in and out or go completely black for extended periods. One owner reports loss coinciding with heated seat malfunction, suggesting wiring/computer glitch.
When: Various mileage; one documented from early 2014
Symptoms owners cite: display blackout while driving; rear-view camera loss; vertical lines appear before blackout; heads-up display fades in and out; loss lasting more than one minute; driver must pull over until display returns; heated seats fail to function (possibly related)
Repairs/costs cited: Full monitor replacement attempted; problem persisted and worsened. Heads-up display replaced twice; dimming switch disconnected but problem continued.
Power Loss and Electrical Control Failures
Vehicle experiences complete or partial power loss while driving or at stops, affecting multiple systems simultaneously. Power steering locks up, power locks cycle independently, and vehicle may lunge or lurch. Some cases involve loss of all electrical power including radio and headlights.
When: 151,000 miles (one documented case); others at various mileage
Symptoms owners cite: sudden loss of all power (radio, lights); power steering seizes; power locks lock/unlock independently; vehicle lurches before losing power; parking assist warning light; multiple systems lose power simultaneously
Codes mentioned: electrical failure, low voltage, parking assist warning
Repairs/costs cited: Dealer diagnosis inconclusive; independent mechanic identified electrical failure but repair status unknown
Climate Control System Failure
HVAC system becomes unresponsive with temperature locked at last-set level and blower fixed on low at feet-only position. Climate control panel will not power on, eliminating defrost function for all windows.
When: <UNKNOWN>
Symptoms owners cite: climate control panel non-responsive; temperature locked at last setting; blower locked on low, feet-only zone; defrost unavailable; no warning lights
Failed Auto-Stop/Auto-Restart System
Vehicle's auto-stop feature (eco mode) fails to restart engine when vehicle stops at lights or in traffic. Engine cranks but does not fire, or fails to restart on first attempt. System malfunction causes power loss while stopped.
When: Various mileage
Symptoms owners cite: engine fails to restart after auto-stop; whining sound during restart attempt; extended cranking without firing; power loss in eco mode
Ignition System / Key Immobilizer Failure
Vehicle fails to start or starts intermittently. Driver-side view mirror controls and key immobilizer may be involved. Vehicle may refuse to shift gears, and brake/accelerator may not respond even as engine revs.
When: 74,000 miles (one case); 66,000 miles (another)
Symptoms owners cite: vehicle fails to start; delayed start after waiting minutes; display screen fails to respond; doors fail to lock; gear shifter fails to shift; vehicle does not accelerate despite engine revving; eco warning message displayed
Codes mentioned: key immobilizer fault
Repairs/costs cited: New battery installed and radiator support cleaned; failure persisted. Dealer unable to replicate at service.
Spontaneous Engine Start (Push-Button Ignition)
Engine starts itself 30 minutes after vehicle is properly shut off with ignition key removed. Requires ignition key to shut off engine again. Hazard: carbon monoxide buildup in parked vehicle.
When: 63,000 miles
Symptoms owners cite: engine cranks and starts without driver input; engine runs unattended in parked vehicle; ignition key required to shut off
Repairs/costs cited: Cause not determined
Radio and Backup Camera Electrical Failure
Radio and rear-view camera fail to function. Suggests internal electrical wiring failure affecting multiple systems.
When: 44,000 miles
Symptoms owners cite: radio malfunction; backup camera non-functional
Codes mentioned: internal electrical failure
Repairs/costs cited: Independent mechanic diagnostic testing performed; repair status unknown
Gear Shift Control Failure
Gear shifter becomes stuck or unresponsive during vehicle startup in some cases; in another case, shifter fails to respond sporadically while driving.
When: 66,000 miles (one documented case)
Symptoms owners cite: gear shifter fails to shift; shifter stuck or unresponsive at startup or while driving
Stall with Jerking/Lurching During Acceleration or Inclines
Vehicle stalls, jerks, or lurches when accelerating from stop or climbing hills. Occurs at traffic lights and stop signs. Display may turn off and restart. Traction control (StabiliTrak) issues may be involved.
When: Various mileage
Symptoms owners cite: stall at stop lights or stop signs; jerking/lurching on acceleration; loss of power going uphill; display loss and restart; StabiliTrak warning
Codes mentioned: P0420 (carbon filter related code in one case), StabiliTrak code
Repairs/costs cited: Carbon filter replaced in one case but problem recurred; owner suspects brake system or traction control electrical fault
Backup Camera Dimness
Rear-view/backup camera image is extremely dim and difficult to see, reducing visibility during reverse operation.
When: 2,000 miles
Symptoms owners cite: backup camera image extremely dim; poor visibility when reversing
Synthesized from 34 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.