This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use for certain repairs, such as Wiring Harness Repairs.
full bulletin at NHTSA ↗2015 Buick Verano electrical problems
moderate Owners of the 2015 Buick Verano have filed 17 NHTSA complaints about the electrical, typically surfacing around 40,797 miles at roughly $850 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See electrical across all vehicles →
Failure mileage
Complaints
17
Recalls
0
Avg fix
$850
| Model year | electrical complaints |
|---|---|
| 2012 Verano | 14 |
| 2013 Verano | 17 |
| 2014 Verano | 30 |
| 2015 Verano (this page) | 17 |
| 2016 Verano | 12 |
When does it fail?
Of the 17 electrical complaints filed for the 2015 Buick Verano, 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
Among the 5 model years of Buick Verano in our records for electrical problems, this one ranks #2 by owner-complaint volume.
Electrical accounts for 29% of all owner complaints filed against this vehicle, across 5 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.
The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
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 ↗This service bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.
full bulletin at NHTSA ↗This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2015 Buick Verano has a documented blind spot detection system defect tied to poor sensor placement in the rear bumper. Water, salt, and snow enter the sensor modules, causing corrosion that generates false alerts, random blinking indicator lights, and complete detection failure. A Service Side Detection System warning message appears on the dashboard, and the indicator lights remain illuminated even after the system is manually disabled—a design flaw that makes the safety feature unreliable.
This corrosion cascades into wider electrical trouble. Owners report simultaneous failures: gauges (speedometer, fuel, temperature) go dark, the radio dies or resets itself, HVAC fans cycle erratically, turn signals stop displaying, and multiple warning lights—air bag, tire monitoring, parking assist, theft deterrent—flash on the dashboard. The vehicle becomes difficult or unsafe to drive. Dealerships often cannot pinpoint the root cause despite $200–$400 diagnostic fees.
Owners also report keyless ignition failures: keys stuck in the ignition with steering wheel locked, engines starting on their own, or refusing to shut off. One vehicle would not restart after parking. Additionally, some owners replaced alternators and batteries without fixing electrical failures, suggesting deeper system problems. GM issued a recall campaign for the Chevy Cruze—a nearly identical platform—in April 2019 but has not extended it to the Verano, leaving affected owners without manufacturer support.
Same Buick Verano electrical reports on nearby years: 2012 · 2013 · 2014 · 2016
Failure modes owners describe
Side Detection System sensor corrosion and failure
Blind spot detection sensors in the rear bumper corrode due to water, snow, and salt ingress caused by poor sensor module placement. Sensors malfunction, producing false alerts or failing to detect vehicles. Service Side Detection System warning messages appear on the dashboard. Indicator lights in mirrors blink randomly or stay illuminated even when the system is turned off. This is a design defect allowing moisture into the sensor connectors.
When: Between 28,000 and 81,000 miles; one complaint noted issue starting 6-8 months before reporting
Symptoms owners cite: Blind spot detection indicator lights on mirrors coming on sporadically or when no vehicle is present; Failure to detect vehicles in blind spots; Service Side Detection System message on dashboard; Indicator lights remaining on even when system is disabled; Dashboard lights flickering or all service messages appearing simultaneously
Codes mentioned: SERVICE SIDE DETECTION SYSTEM
Repairs/costs cited: Owners cite $700–$1,000+ to replace sensor modules. One owner reported unplugging the sensor caused the right rear brake light to fail, requiring further repair over $1,000. Corrosion not covered by aftermarket warranty.
Recalls/TSBs owners mention: GM issued Campaign #N172097060 in April 2019 for Chevy Cruze with identical issue; no equivalent program extended to 2015 Buick Verano despite shared platform.
Cascading electrical system failures from sensor/connector corrosion
Corrosion in the side detection system connectors or moisture intrusion into electrical connectors triggers widespread system failures. Multiple vehicle systems malfunction simultaneously—gauges, radio, HVAC, turn signals, cruise control, and various warning systems all fail at once. Owners report the vehicle becomes unsafe to drive with no speedometer, fuel gauge, or temperature gauge function.
When: Reported at 68,800 miles and during highway driving; one owner noted onset 6-8 months prior to complaint
Symptoms owners cite: Gauges (speedometer, fuel, temperature) stop working; Multiple dashboard warning lights (air bag, tire monitoring, front camera, parking assist, side detection, theft deterrent); Radio stops or requires manual reset each start; Turn signals non-functional on display but may work mechanically; HVAC fans cycling on and off randomly; Cruise control disengaging unexpectedly during driving; Alternating gauge readings or erratic needle movement
Codes mentioned: SERVICE AIR BAG, TIRE MONITORING SYSTEM, FRONT CAMERA, PARKING ASSIST, SIDE DETECTION SYSTEM, THEFT DETERRENT SYSTEM
Repairs/costs cited: Dealership diagnostics alone cost $200–$400. Owners unable to determine root cause; one dealership stated all modules read normally but could not isolate the problem. Repair costs unknown but anticipated to be substantial.
Keyless ignition system faults
The keyless engine start system fails to respond or performs unexpectedly. In some cases, the key cannot be removed from the ignition and the steering wheel locks while parked. In others, the engine starts on its own without driver input, or the ignition refuses to turn off even after multiple attempts.
When: At 5,000 miles (rental vehicle); at 81,000 miles (owned vehicle); timing not specified in one complaint
Symptoms owners cite: Key stuck in ignition with steering wheel locked; Engine failing to restart after parking; Engine starting independently without pressing the start button; Ignition button requiring multiple attempts to turn engine off; Engine restart failures with warning lights absent
Codes mentioned: SERVICE THEFT DETERRENT SYSTEM
Repairs/costs cited: One owner cited $596 quote for replacing entire theft deterrent device; repairs not completed in any reported case.
Battery and charging system electrical instability
Vehicles exhibit electrical instability consistent with alternator or battery failure, though root cause unclear. One owner replaced both alternator and battery without resolving the issue, suggesting a deeper electrical system problem. Electrical system remains unstable, causing cascading failures in climate control, motors, and remote systems.
When: Vehicle would not start or cut off immediately after boost; timing not specified in other complaints
Symptoms owners cite: Vehicle failing to start or dying immediately after jump-start; Electrical system instability affecting AC, fan motor, engine temperature regulation; Remote door lock system failures; Issues occurring both while driving and parked
Repairs/costs cited: Owner replaced alternator and battery without resolving the failure; vehicle died again after each repair.
Recalls/TSBs owners mention: GM issued recalls for electrical problems on 2013 and 2014 model years but not extended to 2015 Verano.
Individual blind spot detection failures
Isolated failures of left or right side blind spot detection system where the indicator light remains illuminated, fails to extinguish, or stops functioning without triggering a service message.
When: Unspecified timing in complaints
Symptoms owners cite: Blind spot detection light on mirror remaining illuminated or stuck on; Detection system ceasing to function; No corresponding service warning message on dashboard
Synthesized from 17 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 4 most recent
It all started with the side detection system. Told me to have it serviced, as I was on the high way the electrical stated going crazy. Gauges going back and fourth constantly, radio turned off, fans turned off, and blind spots kept blinking. The mechanic found a corrosion issue. They were able to unplug it but it also made it so my rear brake light on the right would not work (which is illegal).…
Car failed to start with remote key. When tried to start with the key the cd ejected, and it wouldn't start. I used a battery pack to jump start the car. I then had a error message displayed saying "service theft deterrent system"
Tl* the contact rented a 2015 Buick verano. The contact stated that the keyless ignition failed to turn off until several attempts. On a separate occasion, the engine started independently however, the contact was able to enter the vehicle and turned the engine off. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was…
My vehicle was rear ended and when the wire connection was detached there was signs of corrosion cause by moisture. The insurance company wont pay for it because the Buick mechanic said this is a common issue with Buick Verano's. When moisture gets into the connectors all instruments on the dashboard goes haywire. it's my belief that this may cause the car to stall and if that happens no power…
Had electrical trouble with your 2015 Buick Verano?
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 2015 Buick Verano?
It's a documented issue but not catastrophic. 17 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Across the 13 complaints that reported odometer mileage, most electrical failures cluster between 31,917 and 65,000 miles, with the median around 40,797. A quarter of owners report trouble before 31,917; a quarter make it past 65,000. 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/2015/Buick/Verano.
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.