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 Pontiac G6 electrical problems
severe 135 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Failure mileage
Complaints
135
Recalls
0
Avg fix
$850
2crashes
8fires
2injuries
When does it fail?
Of the 135 electrical complaints filed for the 2007 Pontiac G6, 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
Owners have filed 135 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 6 model years of Pontiac G6 in our records for electrical problems, this one ranks #2 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
The 2007 G6's electrical system is a minefield. The most common complaint is brake lights that work backwards: they're on when you're accelerating and off when you hit the brakes, the opposite of what drivers behind you need to see. This happens intermittently, making it hard to diagnose. Owners report replacing the brake pedal position sensor, the switch, the whole BCM (body control module), even the wiring harness—yet the problem comes back within days or months. Multiple owners got stranded unable to shift out of park, or lost cruise control function when the brake light issue flared up.
Headlight wiring connectors melt and burn repeatedly under normal bulb operation, leaving drivers with one headlight or none. One owner replaced the same connector three times by 62,000 miles. Owners describe seeing the plug smoke while driving.
Fire and smoke issues are documented: fuse boxes catching fire in the trunk, underdash wiring burning while the car is running, and at least two reports of engine compartment fires while the vehicle was parked and off. In one case, GM investigated an electrical fire at 9,000 miles but refused to assist, claiming no defect existed.
Airbags are another concern—both non-deployment in a collision and random warning light malfunctions that dealers struggle to replicate and fix. Some owners describe GM being unresponsive after filing complaints. The blower motor runs on its own when the car is off, draining batteries. The panoramic roof gets stuck. And a few owners report the key can be removed while the car is still in gear.
These aren't one-off complaints; owners cite internet forums, dealership service records spanning years, and mechanics stating the problem is unfixable without a full system overhaul that GM won't fund.
Same Pontiac G6 electrical reports on nearby years: 2005 · 2008 · 2009 · 2010
Failure modes owners describe
Brake lights illuminating in reverse (on when not braking, off when braking)
Brake lights illuminate when the brake pedal is not depressed and turn off when the pedal is pressed, the opposite of normal operation. This occurs intermittently and can recur even after repair attempts. The condition creates a safety hazard by preventing drivers behind from seeing actual braking events.
When: Intermittent; some owners report recurring within days or months of repair; occurs in warm and cold weather
Symptoms owners cite: Brake lights on while accelerating or driving without braking; Brake lights off when brake pedal depressed; Difficulty shifting out of park (associated symptom); Cruise control disengages (associated symptom)
Codes mentioned: BCM (Body Control Module) issues, Brake pedal position sensor fault
Repairs/costs cited: Brake pedal position sensor replacement; brake lamp switch replacement; BCM connector cleaning with dielectric grease; BCM replacement; wiring harness replacement. Multiple owners report repairs fail within days to months; one owner reported five dealership visits with persistent failure.
Recalls/TSBs owners mention: NHTSA Campaign 14V252000 (Electrical System, Electronic Stability Control, Exterior Lighting, Service Brakes, Hydraulic, Vehicle Speed Control); some VINs excluded from recall; recall remedy failed to resolve issue for multiple owners; earlier recall 09V036000 covered 2005–2006 models but not 2007
Headlight wiring connector overheating and melting
Headlight wiring connectors overheat, melt, and burn out repeatedly under normal bulb operation. The connector and socket assembly fail, leaving drivers without headlights and creating nighttime driving hazards. Issue affects both low beam and high beam circuits.
When: Bulb replacements within 2 weeks to 1 month; multiple recurrences over vehicle lifetime; at 62,000 miles, owner had already paid three times for repairs
Symptoms owners cite: Headlight bulb burns out within 2 weeks of replacement; Connector socket melted and burned; Headlight wiring harness smoking; Only one headlight working intermittently; Headlight may work only when hood is slammed
Repairs/costs cited: Headlight socket assembly replacement; wiring harness replacement. Owner paid for three separate repairs by 62,000 miles with recurring failure. Mechanics report inability to fix due to lack of recall.
Electrical fire in fuse box and underdash wiring
Fuse box (trunk-mounted) and underdash wiring overheat and catch fire, destroying interior lighting and electrical components. A loud pop precedes smoke and fire. This is a critical safety and fire hazard.
When: During normal driving (narrative #2 reports 2019 incident); vehicle was already subject to separate power steering recall
Symptoms owners cite: Loud pop sound from under dash; Smoke filling interior; Fuse box completely burned up; Underdash wiring caught fire; All interior lighting and electrical components stopped working
Repairs/costs cited: Owner estimated repair cost $1,000–$1,200; vehicle left at mechanic's shop due to inability to afford repairs
Engine compartment electrical fire
Vehicle caught fire in engine compartment while parked and turned off. Fire department and GM investigator determined electrical fire as cause. GM closed case claiming no defect found and that vehicle was not running hot.
When: Vehicle had been off for 30 minutes; failure at 9,000 miles
Symptoms owners cite: Vehicle engulfed in flames while parked; Fire in engine compartment
Recalls/TSBs owners mention: GM closed case; stated no defect found; advised owner to contact insurance company
Starter electrical short causing fire and smoke
Starter shorted out, causing smoke to emit from vehicle while parked. Exterior lights flashed and clicking noise occurred before smoke appeared.
When: Vehicle parked; at 38,000 miles
Symptoms owners cite: Loud clicking noise while parked; Exterior lights flashing; Severe smoke from vehicle
Repairs/costs cited: Starter and battery components identified as failure sources
Recalls/TSBs owners mention: GM investigator declined to provide assistance because no flames were witnessed (only smoke); failed to resolve
Front electrical port fuse melting and fire
Front electrical port (12V accessory port) fuse melted after device was left plugged in while vehicle was off, triggering small fire in rear trunk fuse block. Multiple attempts to reset vehicle caused additional smoke.
When: After FM transmitter left plugged in vehicle with engine off
Symptoms owners cite: Smoke from rear trunk fuse block; Smell of burnt plastic; Fuse block melted around electrical port site; Small fire after reconnecting battery
Repairs/costs cited: Electrical port fuse removed; fire extinguished; aftereffects include non-functional park lamps, trunk not recognized as closed, left turn signal not working, rear defrost button non-functional
Airbag system non-deployment in frontal collision
Driver and passenger side airbags failed to deploy during frontal collision with extensive front-end damage. Owner suspects defect in airbag sensing system and filed Product Assistance Claim with GM. No warning lights indicated malfunction beforehand.
When: During motor vehicle collision
Symptoms owners cite: Airbags did not deploy upon frontal impact; Extensive front-end damage; No prior warning lights or messages
Recalls/TSBs owners mention: NHTSA Campaign 07V146000 (Passenger airbag sensing system, FMVSS 208); owner filed Product Assistance Claim with GM; GM contacted once but then unresponsive to follow-up calls and emails
Airbag warning light and sensor malfunction
Airbag warning light illuminates randomly and driver information center displays airbag malfunction message with warning chime. Issue occurs intermittently and is traced to front passenger seat sensor. Warning clears when vehicle is turned off but recurs.
When: Intermittent; occurring more frequently over time; one owner reports problem began in year three of ownership
Symptoms owners cite: Airbag lamp illuminates during operation; Driver information center displays airbag malfunction; Warning chime sounds; System indicates airbag not operating; Error clears when engine shut off
Codes mentioned: Front passenger seat sensor fault
Dashboard and instrument cluster electrical malfunctions
Multiple electrical spasms affecting gauges, warning lights, and climate control. Speedometer, tachometer, and all gauges bounce, flake out, or go to zero. Traction control shuts down. HVAC electrical fails. Defrost inoperative. Warning lights cycle on and off randomly.
When: Intermittent; can occur while driving or while stationary; unpredictable timing
Symptoms owners cite: All gauges malfunction (speedometer, tachometer reset to zero); Traction control disengages; HVAC electrical failure; Defrost non-functional; Warning lights cycling on and off; No visibility out windshield when defrost fails
Codes mentioned: 17 error codes extracted by dealer, Traction control system codes
Repairs/costs cited: Dealer unable to diagnose; requested blank check authorization for continued diagnostics; GM had no resolution
Recalls/TSBs owners mention: Related to NHTSA recall on 05/15/2014 but not applied to all affected VINs
HVAC blower motor failure and intermittent operation
Blower motor stops working intermittently or fails entirely. When working, fan speed controls are gradually lost. Problem mirrors earlier Silverado recall but not applied to G6.
When: Within first warranty period; then recurring; one owner reports loss of controls 1–3 over time
Symptoms owners cite: Blower motor stops working; Intermittent operation (works, then stops); Progressive loss of fan speed dial control
Repairs/costs cited: Dealers unable to replicate issue when vehicle is brought in; blower works during inspection so no repair performed
Recalls/TSBs owners mention: No recall applied despite similar 2009 recall on 2007 Silverado trucks for identical issue
Blower motor running continuously without ignition
Blower fan runs on its own when vehicle is off, key out of ignition, and doors locked. Results in repeated battery drain and dead battery incidents.
When: Recurring over vehicle ownership period
Symptoms owners cite: Blower fan running when car is off; Key not in ignition; Doors locked; Battery drain; Dead battery incidents
Repairs/costs cited: Dealer eventually fixed after coordination with GM
Recalls/TSBs owners mention: GM involved but no clear resolution documented
Accessory electrical delay malfunction (radio and lighting)
Delay power function for radio and interior lights fails to operate correctly. Radio does not shut off after driver door is opened (should have 10-minute delay). Interior dome lights stay on when vehicle is off. Sometimes times out, sometimes does not.
When: Progressive issue; worsening over time
Symptoms owners cite: Radio remains on when driver door opened; Interior dome lights remain on when parked; Does not shut off at expected 10-minute delay; Requires multiple door open/close cycles to turn off
Battery drain with unknown source
Battery drains completely within one hour of running vehicle despite new battery and battery warehouse verification. Owner unable to identify cause and ran out of money for further diagnostics.
When: Recurring issue; approximately one hour runtime before complete drain
Symptoms owners cite: Battery dies approximately one hour after driving; New battery installed still drains
Recalls/TSBs owners mention: Warranty purchased but did not cover electrical drain issue
Shift-from-park malfunction
Vehicle becomes difficult or impossible to shift out of park. Occurs intermittently and is often associated with brake light malfunction. Requires repeated brake pedal depression, vehicle restart, or prolonged waiting.
When: Intermittent; can occur in parking lots and at traffic stops; one owner stranded 30 minutes in dark parking lot
Symptoms owners cite: Vehicle stuck in park; Cannot shift to reverse or drive; Requires repeated brake pedal depression to unlock; Requires vehicle restart; Sometimes requires prolonged waiting
Codes mentioned: Associated with brake pedal position sensor fault
Cruise control disengagement and malfunction
Cruise control disengages intermittently or fails to engage. Often occurs in conjunction with brake light malfunction. Once disengaged, cannot be reset until vehicle is turned off and restarted.
When: Intermittent; recurring even after brake system repairs; one owner reports problem onset in warm weather, resolved in cold, then recurred
Symptoms owners cite: Cruise control will not engage; Cruise control disengages unexpectedly while driving; Cannot reset cruise until engine restarted; Often coincides with brake light malfunction
Repairs/costs cited: No separate repair documented; associated with brake light switch and BCM issues
Traction control and electronic stability control malfunction
Traction control light comes on randomly and stays on intermittently. Electronic stability control system fails. One owner reports loss of brake function when traction control light engaged during highway driving.
When: Intermittent; initially in winter months but continued after weather cleared
Symptoms owners cite: Traction control light comes on randomly; Service traction light illuminates; Electronic stability control fails; Vehicle shaking badly; Brake failure during ESC malfunction (one report)
Codes mentioned: Traction control codes, ESC system codes
Repairs/costs cited: Sensor harness replacement (one case: harness was rubbing against front axle, compromising casing and shorting system)
Ignition cylinder allowing key removal in gear
Key can be removed from ignition while vehicle is in neutral or drive, a safety defect that prevents proper ignition interlock function.
When: At 59,716 miles
Symptoms owners cite: Key released from ignition while vehicle in neutral or gear; Ignition cylinder and switch not reading properly when car in gear
Repairs/costs cited: Ignition switch cylinder replaced and coded
Panoramic roof malfunction
Panoramic sunroof opens only about one-half inch and then becomes stuck. Makes noise that was not previously noticed (likely audible when roof was functional and open).
When: At 40,000 miles; warranty expired
Symptoms owners cite: Roof opens only half inch then jams; Noise from roof assembly; Roof inoperable
Repairs/costs cited: Warranty did not cover; owner states repair very expensive
Headlight assembly electrical and connection issues
Multiple electrical problems with headlight circuits: plugs melt, connectors overheat, and wiring harness issues cause bulb failures and intermittent operation. One owner reports needing to smack headlight housing to get light working.
When: Multiple occurrences over vehicle lifetime; one bulb failure within 2 weeks, another within 3 days; recurring at 62,000 miles
Symptoms owners cite: Headlight bulb burns out repeatedly; Plug melts and smokes; Socket melted and burned; Headlight works intermittently; Requires physical impact to headlight to function; Only one headlight working at times
Repairs/costs cited: Socket assembly replacement; harness replacement; multiple repairs required
Engine-related electrical warning lights and sensor faults
Check engine light stays on permanently despite no fault condition. Oil pressure light cycles on and off periodically without oil pressure issue. Cooling sensor and temperature gauge faults occur.
When: Oil pressure light after oil changes; temperature issues in summer months
Symptoms owners cite: Check engine light on constantly; Oil pressure light on/off cycling; Engine temperature gauge stuck in cold position when engine is hot; Engine overheating with A/C blowing hot air
Codes mentioned: Multiple engine codes present despite no mechanical fault
Repairs/costs cited: Cooling sensor replacement; oil changes performed but light persists
Anti-theft system disabling vehicle randomly
Anti-theft system engages and shuts down vehicle at random times, particularly when diagnostic scanner is connected. RPM surge also occurs.
When: Random timing; triggered by scanner connection
Symptoms owners cite: Vehicle shuts off unexpectedly; Anti-theft light illuminates when scanner plugged in; RPM drops then surges when scanner connected
Seat belt and service warning light malfunctions
Service airbag light and buckle seat belt light remain on or illuminate incorrectly. Buckle light stays on even when seat belt is properly fastened.
When: Intermittent; recurring
Symptoms owners cite: Service airbag light comes on randomly; Buckle seat belt light stays on when driver is buckled in; Warning lights illuminate when no issue present
Fuel pressure sensor and fuel system electrical issues
Fuel tank pressure sensor has low voltage issues. Gas leak reported with strong gas smell persisting after catalytic converter replacement.
When: Recurring over one-year period; one owner drove with gas leak for year
Symptoms owners cite: Strong gas smell in cabin; Worsening fuel smell after catalytic converter replacement; Fuel leak (suspected pump-related); Worse gas mileage
Codes mentioned: Fuel pressure sensor voltage fault
Repairs/costs cited: Catalytic converter replacement did not resolve gas smell or mileage issues
Recalls/TSBs owners mention: G5 recall exists for this issue but not extended to G6
Transmission shifting harshness and shudder
Transmission shifts with excessive harshness and jerking. Vehicle jerks upon initial shift into reverse or drive, then jerks every 10 mph throughout acceleration.
When: Occurring immediately upon vehicle startup and throughout driving
Symptoms owners cite: Hard shifting into reverse and drive; Jerking every 10 mph during acceleration; Check engine light on (related or coincident)
Codes mentioned: Check engine light (code not specified)
Repairs/costs cited: No successful repair found; owner reports multiple mechanics unable to resolve
Right headlight wiring burn-out
Right (passenger) low beam headlight wiring burned completely, requiring replacement. Phenomenon occurs on both 2007 and 2008 G6 vehicles owned by same person.
When: Approximately 3 months into ownership; also occurred on prior 2008 G6
Symptoms owners cite: Low beam headlight wires completely burned off; Headlight inoperative
Repairs/costs cited: Wiring replaced
Driver information center display malfunction
Driver information center fails to turn on with vehicle, making it impossible to view warning messages or vehicle status information. Must shut off and restart vehicle to restore display.
When: Intermittent; recurring
Symptoms owners cite: Information screen and radio not illuminated at startup; Unable to see vehicle warnings and status
Repairs/costs cited: Corrected by restarting vehicle
Synthesized from 135 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
Brake lights stay on . This only happens after the car has been driven 10+ miles.at this point the cruise control disengages and the manual shift feature won't work. I took it to a Pontiac dealer (now a Buick GMC dealer) 2 times and spent $250.00 on repairs with no success. Dealer says he has no idea. This is a serious safety matter. The g6 owners club is getting more and more complaints of…
FAILED COMPONENT SYSTEM: Driver & Passenger side Airbag system. SAFETY RISK: I was involved in motor vehicle collision, resulting in extensive front-end damage to my car. Upon impact, the driver and passenger side airbags did NOT deploy, which based on the extent of the damage to my vehicle they should have deployed. CONFIRMED REPORT: Yes, one component of the airbag system has already been…
Had electrical trouble with your 2007 Pontiac G6?
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 Pontiac G6?
It's a meaningful issue. 135 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 99 complaints that reported odometer mileage, most electrical failures cluster between 54,000 and 104,000 miles, with the median around 85,000. A quarter of owners report trouble before 54,000; a quarter make it past 104,000. 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/2007/Pontiac/G6.
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.