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 ↗2008 Buick Lucerne electrical problems
severe 106 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Failure mileage
Complaints
106
Recalls
0
Avg fix
$850
3crashes
18fires
2injuries
When does it fail?
Of the 106 electrical complaints filed for the 2008 Buick Lucerne, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 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
Of the 6 model years of Buick Lucerne we track for electrical problems, this one carries the most owner complaints on file — 106.
Electrical accounts for 49% of every owner complaint on file for this vehicle — the dominant problem area across 11 categories tracked.
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
The 2008 Buick Lucerne has a persistent electrical failure tied to the rear electrical center (REC/fuse box) mounted under the rear seat. Owners describe the fuel pump relay overheating, melting, and catching fire, along with widespread damage to the fuse box and surrounding wiring. The root cause centers on the rear seat bracket applying pressure to the fuse box housing—when the seat's metal components contact the relay or fuse box cover, they force components to shift or misalign, causing resistance, arcing, and extreme heat buildup that melts plastic housings and fuse contacts.
Failures present as no-start, stalling while driving (sometimes at highway speeds), loss of power steering and brakes, burning plastic odors, and in multiple cases actual fires under the rear seat. Owners report replacing fuel pump relays repeatedly—sometimes three to five times before replacing the entire fuse box—only to have the problem recur. Melted relay pins and scorched fuse terminals are common findings. Several narratives cite GM's TSB 15-NA-051 and a 10-year "special coverage" window that expired for many owners. One formal notification mentioned damage from rear seat bracket contact and fire risk. No formal recall has been issued despite the fire hazard and loss-of-control risk during driving.
The problem affects multiple model years (at least 2008–2011) and is widely documented online. Repairs cost $400–$720 for the fuse box alone, plus fuel pump, relays, and diagnostic labor. GM has declined to cover repairs for out-of-warranty vehicles or those outside the limited courtesy repair window.
Same Buick Lucerne electrical reports on nearby years: 2006 · 2007 · 2009 · 2010 · 2011
Failure modes owners describe
Rear electrical center (REC/fuse box) overheating and melting
The fuel pump relay and fuse box housing located under the rear seat overheat due to pressure from the rear seat bracket or metal components contacting the fuse box cover, forcing relay pins or contacts to misalign, create resistance, arc, and generate extreme heat. This causes plastic housings and female coupler connectors to melt, destroying the relay and contaminating the entire fuse box.
When: Variable; occurs between 57,000 and 120,000 miles; some owners report failures within weeks of purchase
Symptoms owners cite: No-start condition (vehicle cranks but fuel pump does not operate); Engine stalls while driving without warning; Burning plastic odor from under rear seat; Melted or scorched relay pins and fuse terminals (visible as black scorch marks or plastic melting); Vehicle loses power steering and power brakes during stall events; Smoke or flames visible under rear seat; Multiple relay failures (three to five replacements) before fuse box replacement becomes necessary
Repairs/costs cited: Fuel pump relay replacement $50–$150; fuel pump replacement $300–$600; entire rear electrical center replacement $400–$720; labor on top of parts costs. Multiple owners report having to replace relays repeatedly because the underlying fuse box pressure issue was not addressed, making repairs cumulative and expensive.
Recalls/TSBs owners mention: GM issued TSB 15-NA-051 with technical directive to replace relay with low-profile style and cut seat brackets. Limited 10-year 'special coverage' window for repairs (expired for vehicles over ~10 years old or outside narrow purchase/repair window). January 2019 letter from GM to some owners acknowledging rear seat bracket contact risk and potential melting/fire/no-start; reimbursement offered only within strict time frame. No formal recall issued despite documented fire and safety risk.
Fuel pump relay failure and recurrence
Fuel pump relay melts or burns due to excessive heat from misalignment or contact pressure from rear seat bracket. Even after replacement, the relay burns out again within days because the underlying fuse box pressure issue is not corrected—the replacement relay is subjected to the same mechanical stress.
When: First failure typically 57,000–120,000 miles; recurrence within 2–14 days of replacement in many cases
Symptoms owners cite: No-start (engine cranks, no fuel pump operation); Stalling during highway or city driving; Burning smell when key is turned or during operation; Relay housing visibly scorched, melted, or smoking when fuse box opened
Repairs/costs cited: Relay replacement alone ($50–$150) temporary; owners often purchase multiple replacement relays. Some owners cite NAPA or AutoZone parts; dealers reluctant to stock replacement fuel pump relays due to known failure pattern. Permanent solution requires fuse box replacement and seat bracket correction.
Recalls/TSBs owners mention: TSB 15-NA-051 recommends low-profile relay and seat bracket modification. Limited coverage window expired for most out-of-warranty owners. Dealers sometimes replace relay as temporary fix without addressing root cause.
Loss of motive power and steering/brake control during driving
When the fuse box or fuel pump relay fails while the vehicle is in motion, the fuel pump stops operating, engine dies, and power steering and power brakes become inoperative. This occurs without warning and can happen on highways, busy intersections, or residential streets, creating immediate crash or collision risk.
When: Occurs during active driving; speeds range from 15 mph to 75+ mph; no predictable pattern
Symptoms owners cite: Engine stalls abruptly while driving; No warning lights before stall; Immediate loss of power steering (heavy steering); Immediate loss of power braking (long pedal travel or no response); Vehicle coasts to side of road; cannot be restarted for 5–10 minutes or longer; Multiple stalling events in single day or across several months
Repairs/costs cited: Vehicle must be towed each time. Owners report four separate tow-truck calls in some cases. Diagnostic time is extensive because no fault codes are stored. Some owners purchased rental cars while waiting for repair diagnosis (costs $467–$500+ per rental).
Recalls/TSBs owners mention: No recall issued despite documented safety risk. Owners who experienced earlier unrelated recalls (e.g., ignition switch) report that GM denies connection to later electrical failures and refuses to acknowledge new problems outside original recall scope.
Fire hazard from melting fuse box components
Overheating fuel pump relay and fuse box generate sufficient heat to ignite plastic housing and foam seat materials directly above the fuse box. Flames or smoke have been observed under the rear seat. The battery is located directly above the fuse box in some units, adding fire risk.
When: Occurs during stall events or while vehicle is parked and running; one case documented active fire under seat requiring manual extinguishing
Symptoms owners cite: Smoke visible under or coming from rear seat; Burning plastic odor (described as acrid, chemical smell); Actual flames visible under rear seat (one documented case); Blackened or charred plastic inside fuse box and on relay housing; Heat sufficient to melt female coupler connectors and relay pins
Repairs/costs cited: One owner manually removed burning seat and extinguished fire. No fire department involvement documented, but one mechanic warned owner that continued operation presented fire hazard. No systematic fire suppression or warning system protects this area.
Recalls/TSBs owners mention: January 2019 letter from GM acknowledged potential for fire as result of rear seat bracket contact. No recall issued; reimbursement for repairs limited to narrow eligibility window. GM has not provided design retrofit (e.g., protective barriers, heat shielding) to prevent fire risk.
Battery drain and repeated battery replacement
Electrical short or parasitic drain in the rear electrical center causes rapid battery discharge, leaving vehicle unable to start even after short parking periods. Owners replace batteries multiple times only to experience drain again.
When: Occurs if vehicle parked for 2–6 days or more; some cases ongoing for years with multiple battery replacements
Symptoms owners cite: Battery fully drained after 2–6 days of parking; Vehicle will not start (no click, no crank); No warning lamps or messages before failure; Clicking sound when key is turned (low battery cranking); Interior cabin lights illuminated while parked (sign of parasitic drain)
Repairs/costs cited: Battery replacement cost $100–$300 per unit. Owners report replacing two to four batteries over vehicle lifetime. Dealer replaced some batteries at no charge but problem recurred.
Recalls/TSBs owners mention: January 2019 GM letter cited battery drain as potential consequence of rear seat bracket contact. Limited courtesy repair window; reimbursement denied if outside time frame or if vehicle is out of warranty.
General electrical system faults and warning light issues
Various electrical components fail or malfunction, including OnStar, brake lights, cruise control, stability control, and lane departure warning system. Some failures appear related to the underlying REC issue; others occur independently. Warning lights may illuminate after a stall or fail to illuminate when they should.
When: Scattered throughout vehicle lifetime; some after stall events, others independently
Symptoms owners cite: Check engine light (may or may not indicate fuel pump relay issue); ABS warning light, brake warning light, TPMS light illuminated; Lane departure warning system inoperable; OnStar disabled or unresponsive; Brake lights non-functional; Cruise control inoperable; Stability control (StabiliTrak) non-functional; No warning lights before critical failures (fuel pump relay, battery drain)
Codes mentioned: Engine check light (unspecified codes related to fuel pump/ignition in some cases)
Repairs/costs cited: OnStar disabled by removing fuse (temporary workaround documented); brake lights repaired; cruise control replaced; stability control module replaced. Costs variable ($50–$1000+). Some failures attributed to electrical surge from overheating relay.
Recalls/TSBs owners mention: One owner reported that dealer/GM service center was slow to diagnose or refused to diagnose. GM issued recalls for ignition switch and heated windshield washer; owners report these recalls did not resolve fuel pump relay or fuse box issues.
Instrument panel readability in daylight (secondary electrical issue)
Instrument panel gauges (speedometer, fuel gauge, tachometer, warning indicators) become unreadable or invisible in direct sunlight or bright daylight, even with backlighting enabled. Panel is mounted too far back into the dashboard console, placing it in deep shadow.
When: Occurs during daylight driving; no problem at night when backlighting is used
Symptoms owners cite: Speedometer needle invisible or unreadable; Fuel gauge unreadable; All instrument indicators invisible in sunlight; Backlighting provides no benefit during daylight; Driver cannot safely judge vehicle speed or monitor fuel level by instrument panel
Repairs/costs cited: No repair documented; design flaw. One owner contacted Buick and local dealer—both acknowledged problem but had no solution.
Recalls/TSBs owners mention: Buick corporate (Detroit) and local dealers acknowledged design flaw but offered no correction or redesign.
Ignition switch and related control failures
Ignition switch sticks or becomes difficult to operate; key cannot be turned off or removed after battery drain. In some cases, steering, braking, and control loss accompany ignition-related events. One case involved crankshaft sensor failure.
When: Typically occurs after battery drain or electrical fault
Symptoms owners cite: Key cannot be turned or removed from ignition; Key stuck after battery drain event; Loss of power steering and power brakes (in one case with crankshaft sensor failure); No power to engine controls
Repairs/costs cited: Ignition switch repair or replacement (cost not documented). Crankshaft sensor replacement documented at unknown cost.
Recalls/TSBs owners mention: GM issued a recall for ignition switch (Campaign 10V240000 or similar). However, owners report recall did not resolve fuel pump relay or fuse box failures occurring after recall completion.
Synthesized from 106 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 6 most recent
Driving down highway and vehicle stalled for no reason. Engine light did not come on. Attempted to start, but nothing happened...no click, no crank, nothing. Had to wait 10 min. Until key start attempt did anything and then ran fine. Have been driving in town ~35mph as well as slower speeds and vehicle will do the same thing...stall. Attempted to start, but nothing happened...no click, no…
Car wouldn't start kept trying to start it and it would make a clicking noise and then all of a sudden a small electrical fire staffed in the fuse box in the rear seat of car
Three door locks ceased working at various times regardless of using a key fob or the switch on the inside of the door. Two were repaired at a gm repair facility (dealer). That gm repair facility attempted to fix the 3rd one, but was unsuccessful. It is aggravating to have to look at all 4 doors each time the car is unlocked or locked to check the position of the lock knob. Hazard: if the door…
2008 Buick lucerne recall on the weight on the key ring. Car went dead in the parking lot. *mw the ignition coil and module were replaced. *jb
2008 Buick lucerne the consumers wife was stopped at an intersection when she suddenly realized the engine was no longer on and the vehicle did not move. The vehicle would not re-start and had to be towed to the dealer. Diagnosis was that the "ignition module" had defaulted. *mw the consumer stated the ignition failed, one day prior to receiving the recall notice in the mail. *jb
2008 Buick lucerne. The car stalled and lost power steering and brake capability on a narrow country road. *ta the consumer received a recall letter on august 21, 2014. The problem regarding the ignition in recall, described the problem she experienced. *jb
Had electrical trouble with your 2008 Buick Lucerne?
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 2008 Buick Lucerne?
It's a meaningful issue. 106 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 62 complaints that reported odometer mileage, most electrical failures cluster between 63,000 and 112,000 miles, with the median around 78,124. A quarter of owners report trouble before 63,000; a quarter make it past 112,000. 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/2008/Buick/Lucerne.
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.