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 ↗2012 Buick Enclave electrical problems
severe Owners of the 2012 Buick Enclave have filed 17 NHTSA complaints about the electrical, typically surfacing around 69,796 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 |
|---|---|
| 2008 Enclave | 61 |
| 2009 Enclave | 16 |
| 2010 Enclave | 17 |
| 2011 Enclave | 19 |
| 2012 Enclave (this page) | 17 |
| 2013 Enclave | 11 |
| 2014 Enclave | 23 |
| 2015 Enclave | 13 |
| 2016 Enclave | 4 |
2injuries
When does it fail?
Of the 17 electrical complaints filed for the 2012 Buick Enclave, 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.
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 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 ↗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 Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses.
full bulletin at NHTSA ↗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 ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of 2012 Buick Enclaves report a wide range of electrical and electronic malfunctions that create both inconvenience and safety hazards. The most severe complaints center on sudden, random power loss while driving. Drivers describe engine power cutting dramatically during normal operation—sometimes at highway speeds—with the dashboard showing "ENGINE POWER IS REDUCED" along with traction control and StabiliTrak warnings. Steering and brakes become hard to operate as power assist vanishes. One owner nearly collided with an 18-wheeler after losing power at 45 mph. Dealerships have been unable to replicate or diagnose these events despite multiple visits.
Power liftgate problems appear frequently. Several owners report the liftgate closes on its own without warning, failing to reverse direction even when detecting an obstruction. One owner reported it struck them on the head and continued pressing down. One liftgate collapsed entirely while opened. Owners also cite recurring issues: HVAC actuators that don't switch modes (causing defrost failure and fogged windows while driving), radio and entertainment systems randomly changing inputs without user input, dashboard lights that black out intermittently, and warning-light cascades that shut down multiple vehicle systems at once.
Engine issues include stalling without warning at various speeds, shaking and misfires despite fuel pump and injector replacement, and fuel system flooding. A seat-belt sensor triggers false alarms with minimal weight on the passenger seat. One owner documented 73 spliced wires in the engine harness after dealership service, contrary to manufacturer repair standards. Multiple owners report dealerships unable to replicate intermittent problems, leaving failures unresolved.
Same Buick Enclave electrical reports on nearby years: 2009 · 2010 · 2011 · 2013 · 2014
Failure modes owners describe
Power loss and limp mode with dashboard warnings
Engine power cuts drastically, reducing output to near-stall levels. Dashboard displays 'ENGINE POWER IS REDUCED,' 'SERVICE TRACTION CONTROL,' 'SERVICE STABILITRAK,' and check engine light simultaneously. Steering and brakes become hard to operate due to loss of power assist. Problem occurs randomly without warning chime first. Vehicle sometimes recovers after restart, but episodes repeat unpredictably.
When: Occurred 10+ times over a period of months; one instance at 75 mph on interstate, another at 45–50 mph on major roadway
Symptoms owners cite: Engine power drastically reduced; Dashboard warnings: ENGINE POWER IS REDUCED, SERVICE TRACTION CONTROL, SERVICE STABILITRAK; Check engine light illuminated; Hard steering; Hard brake operation; Vehicle nearly stalls or loses all power; Chiming before event occurs; Random recurrence with no pattern
Codes mentioned: Check engine light
Repairs/costs cited: Dealership unable to replicate or diagnose; problem remained unresolved
Power liftgate malfunction and safety hazard
Liftgate closes on its own with no warning or beeping. After recall service (2015/2016 liftgate recall), the automatic obstruction-detection system fails to reverse closure when contact is detected; liftgate continues pushing down on obstructions. Power-off does not keep liftgate open; it will not stay raised. Repair attempts including software upgrade did not resolve the issue.
When: After 2015/2016 liftgate recall was performed
Symptoms owners cite: Liftgate closes without warning; No warning beeps or lights before closure; Obstruction detection fails; liftgate continues closing despite object in path; Liftgate will not stay open when powered off; Owner fears safety hazard each time using cargo area
Repairs/costs cited: Software upgraded as part of recall; struts not replaced per owner claim; independent attempts to replace parts unsuccessful
Recalls/TSBs owners mention: 2015/2016 liftgate recall performed; software upgraded
HVAC actuator and blower door motor failure
Heating and air-conditioning mode selector (actuators) does not switch between defrost, front vents, and other modes. Defrost non-functional, causing sudden window fogging while driving—owner must pull over repeatedly to wipe interior windows. Owner had to prop object under liftgate as a workaround; independent repair attempt failed. Another owner reported HVAC door actuator and heater/AC door motor both failed after battery replacement, requiring replacement.
When: Recurring problem; one owner reports issue ongoing; another after battery replacement
Symptoms owners cite: Actuators do not switch HVAC modes; Defrost inoperative; Front vents do not work; Sudden window fogging while driving; Owner unsafe; must pull over to clear interior windows
Repairs/costs cited: Owner attempted independent repair of actuator parts; still non-functional. Dealership unable to replicate. Another owner: HVAC door actuator and heater/AC door motor required replacement; dealer would not reimburse.
Radio and entertainment system random switching
Radio or in-dash entertainment system randomly changes bands, inputs, or sources—CD, AM/FM, AUX, satellite radio, USB—with no driver input. Dealer unable to replicate or fix. Owner expresses concern this points to broader electrical wiring issues.
When: Recurring; happens every drive
Symptoms owners cite: Radio switches between band, CD, AUX, satellite radio, USB randomly; No user input triggers the changes; Problem occurs consistently when driving
Repairs/costs cited: Dealership unable to replicate issue
Engine harness wiring damage and repair via splicing
After timing chain and water pump replacement, the starter began engaging while the engine was running, producing loud noise. Dealership spliced 73 wires on the engine harness rather than replacing the harness. Independent GM service manager stated splicing is unacceptable and harness should be replaced. Owner concerned about flywheel damage. AC later developed whistling noise.
When: After timing chain and water pump service
Symptoms owners cite: Starter engaging while engine running; Loud noise from starter engagement; AC whistling (later occurrence)
Repairs/costs cited: Starter and ECM replaced; 73 wires spliced on engine harness. Independent GM service manager stated harness should have been replaced, not spliced.
Recurring stalling and no-start conditions
Vehicle stalls without warning at various speeds on dry pavement. Multiple service visits with fuel pump replacement and coil pack replacement attempted. One instance: car stalled hard but did not quit at 20 mph, with traction control and check engine light coming on. Problem repeats despite multiple component replacements.
When: Multiple occurrences; one at 20 mph on dry pavement, another at 52,000 miles
Symptoms owners cite: Vehicle stalls without warning at various speeds; Check engine light illuminated; Service Engine Soon light; Traction control light; One instance: hard stall but engine did not quit
Codes mentioned: Check engine light, Service Engine Soon
Repairs/costs cited: Fuel pump replaced; cylinder 4 coil and plug replaced
Engine misfire and shaking
Engine shakes while driving at highway speeds with check engine light illuminated. Disengaging accelerator and re-engaging stops the shaking temporarily. Dealership unable to replicate. Problem has recurred from original purchase date. Independent mechanic replaced catalytic converter, alternator, battery, fuel pump, and fuel pressure sensors; issue persisted.
When: From original purchase; one instance at 65 mph; failure mileage 158,000
Symptoms owners cite: Engine shaking at highway speed; Check engine light on; Shaking stops when accelerator is released and reapplied
Codes mentioned: Check engine light
Repairs/costs cited: Catalytic converter, alternator, battery, fuel pump, and fuel pressure sensors replaced; problem persisted
Turn signal auditory feedback failure
Turn signals fail to produce clicking sound when engaged. Problem recurs intermittently. Radio and instrument panel replaced at different service visits; failure continued after both repairs.
When: At approximately 8,000 miles
Symptoms owners cite: Turn signals do not click when engaged; Intermittent failure
Repairs/costs cited: Radio replaced; instrument panel replaced at different times
Passenger-side seat-belt sensor false alarms
Seat-belt warning alarm activates with minimal weight (under 5 pounds) on front passenger seat—purse and iPad weighing 4.8 pounds trigger alarm. Occurs repeatedly even after module replacement 45 days prior. GM issued service notice advising against placing electronic devices or drinks in front seat—effectively blaming driver behavior rather than addressing defective sensor logic.
When: Recurring; at least second occurrence after prior module replacement
Symptoms owners cite: Seat-belt alarm dinging with less than 5 pounds on seat; Alarm triggered by purse and iPad
Repairs/costs cited: Seat-belt module replaced approximately 45 days before recurrence; dealership provided seat-belt extender as workaround
Recalls/TSBs owners mention: GM Service Notice Document ID 31202743/#08-09-41-0071 instructing customer not to place electronic devices or large drinks in front seat
Intermittent electrical faults with multiple component failures
Vehicle experiences intermittent no-start conditions, electrical shorts, and repeated misfire codes even after fuel injectors replaced. Owner reports front-end components have been extensively replaced but problem persists. No clear diagnosis found despite multiple shop visits.
When: Recurring intermittently
Symptoms owners cite: Vehicle shut offs multiple times; Electrical shorts; Intermittent no-start; Intermittent misfires; Injector codes despite replacement
Codes mentioned: Injector codes
Repairs/costs cited: Fuel injectors replaced; extensive front-end component replacement; problem persists
Dashboard lights intermittent failure
Instrument cluster lights fail to illuminate or go off while vehicle is in motion, rendering speedometer and other gauges invisible. Lights eventually return after a period of time. Problem is unpredictable.
When: Can occur at any time from engine start to highway speed
Symptoms owners cite: Dashboard lights fail to come on or go off while driving; Speedometer invisible; Lights eventually return after period of time; Unpredictable occurrence
Warning light cascade causing electrical shutdown
When any warning light illuminates (example: tire pressure), all dashboard warning lights start flashing, radio and dash lights shut off, and backup camera may fail. Vehicle may shut completely down and restart on its own. Owner fears driving long distances.
When: Recurring when warning lights trigger
Symptoms owners cite: All warning lights flash when one warning triggers; Radio shuts off; Dash lights shut off; Backup camera fails; Vehicle may shut down and restart automatically
Sensor voltage loss after battery replacement
After battery replacement, 15 sensor circuit alarms appeared—all attributed to voltage loss. Upon driving, 13 resolved, but 2 persisted: HVAC door actuator and heater/AC door motor, both requiring replacement.
When: After battery replacement
Symptoms owners cite: 15 sensor circuit alarms due to loss of voltage; 2 sensors did not recover: HVAC door actuator and heater/AC door motor
Codes mentioned: 15 sensor circuit alarms (voltage-related)
Repairs/costs cited: HVAC door actuator and heater/AC door motor required replacement; dealer would not reimburse
Fuel system flooding and parasitic electrical drain
Engine floods when refueling. Additionally, vehicle and radio remain powered on after key is removed from ignition—fuse box identified as the likely cause.
When: Ongoing
Symptoms owners cite: Engine floods when filling fuel tank; Vehicle and radio continue running after key removed; Parasitic drain from fuse box
Power liftgate motor failure with loud clanking
Power liftgate motor does not function. When manually opened after power failure, loud clanking noise occurs from the motor assembly.
Symptoms owners cite: Power liftgate motor inoperative; Loud clanking noise when liftgate opened manually
Door-activated radio off switch inoperative
Driver-door-activated switch that should turn off radio fails to function reliably. Requires jiggling or repeated attempts to work most of the time.
Symptoms owners cite: Driver-door radio shutoff switch does not work reliably; Requires jiggling to operate
Power liftgate structural failure and collapse
Power liftgate collapsed on owner's wife while opened to retrieve groceries. Indicates strut or structural failure of the liftgate assembly.
Symptoms owners cite: Liftgate collapsed while open
Synthesized from 17 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 3 most recent
My car has shut off multiple times , electrical shorts, intermittent no start, intermittent misfires all the time but randomly , injector codes even when replaced and injectors are good , yes come check out my vehicle no shops can find out what's the problem practically the whole front end has been replaced and problems still happening it is congruent with a recall but shows nothing from vin
Power liftgate motor is not working. When the liftgate was opened manually after the power lift did not work a loud clanking ensued.
Tl* the contact owns a 2012 Buick enclave. The contact stated that while driving approximately 45 MPH, the turn signals failed to emit a clicking noise when engaged. The failure recurred intermittently. The vehicle was taken to an authorized dealer twice where the radio and instrument panel were replaced at different times. The failure persisted after each repair. The manufacturer was not…
Had electrical trouble with your 2012 Buick Enclave?
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 2012 Buick Enclave?
It's a meaningful issue. 17 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 13 complaints that reported odometer mileage, most electrical failures cluster between 46,815 and 102,103 miles, with the median around 69,796. A quarter of owners report trouble before 46,815; a quarter make it past 102,103. 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/2012/Buick/Enclave.
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.