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NHTSA — Electrical System Problems

2009 Pontiac G6 (Page 5 of 6) Notes: The 2009 is starting to have the same problems as previous model years, including the headlights blowing out due to bad connectors.

The wiring harness connections aren't a big deal to replace, as long as your dealer or mechanic doesn't charge you an arm & a leg to "diagnose" the problem.


really awful
Crashes / Fires:
1 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
50,946 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2009 Pontiac G6 electrical problems

electrical problem

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2009 Pontiac G6 Owner Comments (Page 5 of 6)

« Read the previous 20 complaints

problem #37

Sep 172013


  • 91,000 miles


Issues with head lights have burnt out the harness and will not stay running even with replacing bulb and new harness and blowing a cell in the battery to I have no running head lights.

- Magna, UT, USA

problem #36

Aug 152013


  • 87,000 miles
Head light harness burns out and have replaced 2 times and can not get it to stop burning out so I have no head lights with this car please help im not the only one with this issue on this car.

- Magna, UT, USA

problem #35

Oct 282013


  • 62,000 miles
This is on my daughter's car. I was following her and I noticed she was driving with her foot on the brake. I motioned her to pull over and asked her why she had her foot on the brake. She said she was not driving with her foot on the brake. Upon further investigation I found out the brake lights were staying on when the brake pedal was not depressed, but when she depressed the brake pedal the brake lights actually went off. This is an extremely unsafe condition. Doing research online I have found many other Pontiac G6 owners with the same problem. This needs to be addressed and fixed by GM.

- Weedsport, NY, USA

problem #34

Sep 292013

G6 4-cyl

  • 70,100 miles


When traveling above about 10 mph the brake lights came on and the cruise control no longer worked. When the brake pedal was depressed, the brake lights went out until the car slowed to about 10 mph at which point the brake lights came back on. Braking was normal at all times. When pulling away from the stop, the brake lights came back on again around 10 mph. The car consistently did this over a trip of about 60 miles. When I took the car into the dealer, the issue wasn't present. The dealer replaced the brake switch and lubricated a connection. The issue has returned 2 days later. This issue could become dangerous especially during braking above 10 mph when following vehicles would not be aware that the car was braking.

- Germantown Hills, IL, USA

problem #33

Sep 132013

G6 6-cyl

  • 60,363 miles
2009 Pontiac G6 low beam headlight failure: "unable to find the problem" as beams work intermittently; my local mechanic replaced left light bulb, but referred me back to dealership as "this was a known defect in this car." Replaced light bulb (repaired (mechanic was unsure, but replaced anyway) and low beams worked a couple of days, now one (right more randomly left), and sometime both low beams fail intermittently. My wife has received one warning from police; headlight was working again when she restarted car after the warning. With increasing frequency both low beam head lights fail while driving at night. These random failures in low beam illumination requires the driver (my wife usually) to immediately switch on high beams. Both high beam lights are working at this time, but these events tend to infuriate oncoming drivers who high beam back at us, so both drivers are blinded. In my opinion, this vehicle is unsafe to drive at any speed at night or in the rain due to random low beam headlight outages. Therefore, we use of the G6 is limited. Though we like the model and had hoped for several more years of use, my wife does not trust the lights will stay on at night, or when it rains. I feel bad about dumping this car on the used/pre-owned car market without filing some form of official complaint. From a brief internet search, the manufacturer (GM) appears to be ignoring this safety issue as a statistically insignificant problem. Sadly, GM will continue to do so until people die and a class action suit is filed. I would not call the Pontiac G6 a lemon, it is just plain too scary to drive under certain conditions. There does not appear to be a solution coming from GM and my mechanic can't fix it. This situation makes this vehicle useless and unsafe half the time, I.e., unsafe at any speed after dark!

- Groves, TX, USA

problem #32

Jul 012013


  • 58,500 miles
My 2009 Pontiac G6 rear brake lights are working opposite of how intended. When the brakes are not applied the brake lights remain activated, when I depress the brake pedal the brake lights turn off. The cruise control is also inoperative, most likely linked to the brake light issue. I called the dealership where I purchased the vehicle new and was told that nothing would be done about the issue because the warranty was over. I asked for information on how to repair the issue myself and was told none was available. Someone is going to get killed over this issue if fatalities have not already occurred.

- Mantua, NJ, USA

problem #31

Jul 042013

G6 6-cyl

  • 25,000 miles


My brake lights are intermittently staying on while driving even though I am not using the brake pedal. The scary part is that they shut off when you hit the pedal and then come back on about 5 seconds later. I saw on the web that there is a known problem with corrosion on the BCM connections. There was a recall for previous years and GM has issued a technical service bulletin on how to fix it because there have been so many problems and complaints. I am going to try a quick fix I found on the Pontiac G6 forum before I have to take it to a dealer and spend my own money on an obvious defect.

- Totowa, NJ, USA

problem #30

Sep 072013

G6 4-cyl

  • 45,000 miles
Brake lights stay on while vehicle is moving causing serious safety issue. I am afraid to drive the car fearing I will cause an accident and some one will be injured because of this obvious defect.

- Hudson, OH, USA

problem #29

Aug 082013


  • 76,000 miles
Both headlight connectors melted.

- Jackson, NJ, USA

problem #28

Jul 092012


  • 55,000 miles
I own two 2009 Pontiac G6 vehicles. Both of the connectors in the headlights of each vehicle have melted and need to be replaced. One has been fixed and the other is waiting to be fixed. They happened at different occasions. This seems to be common with these vehicles and the manufacturer is not taking responsibility for the problem. Please make others aware. I also had a problem with motors for the door locks on both cars going out at the same time. Thank goodness that was under warranty.

- Mesquite, TX, USA

problem #27

May 022013


  • 35,000 miles


Intermittent very hard up shifts (including changes from park-drive etc), cruise flys off and stops working while going down road, speedometer stops working and flickers randomly, car flashes "power steering" on radio panel and "error" on odometer read, hard turning, car loses power as it revs to realize it needs to shift (automatic transmission) initially, restarting car would help for awhile, but now the problem is consistent. GM dealership could not diagnose problem and thought it was loose wiring. After not being able to trace the communication errors the dealership simply gave it back with no fix or answers. Major issue considering the car has only 36500 miles to date with an issue clearly other Pontiac G6 owners have had to deal with as well. The inconsistent issue has contributed to a recent car accident.

- Falcon, CO, USA

problem #26

Aug 052013


  • 82,000 miles
My low beam passenger head light stopped working and I go to have it replaced and it still won't work. We have tested the bulbs and the sockets and they are fine. Can't seem to get it figured out anywhere!

- French Lick, IN, USA

problem #25

Jan 032013

G6 6-cyl

  • 100,000 miles
Cruise intermittently stops working at speed on the freeway. Brake lights randomly stay on when brakes are not applied.

- Parma, OH, USA

problem #24

Jul 242013

G6 4-cyl

  • miles
Was driving and notice my brake lights were staying on even though I wasn't hitting the brakes at the time, then when I would apply the brake the lights went off when I let up on the brake lights would come back on if this problem keeps going on with this car it is going to cause someone to have a wreak and get hurt.I think the company needs to have a recall on this part before someone sues the company for wrongful death. I have read many complaints on this issue and its time for the company to make a recall on it.

- Paducah, KY, USA

problem #23

Jul 202013


  • 95,000 miles
2009 Pontiac G6 I got on the highway and tried to switch on the cruise control and it wouldn't work so I pulled over to the side of the road to see what's wrong. When I got out of my car I noticed that the brake lights were on so I went back and pressed the brakes then they turned off. I started driving again but soon as I turned on the cruise control it comes on but turns right back off. But if I hit the brakes the cruise control will work again for a second then turns right back off that's when I realized that the brake lights come on when I drive but when I hit the breaks they turn off. Im only writing this because my car doesn't have 100,000 miles yet and I saw that your company started an investigation regarding this issue. I would like to know how this can be fixed because it's not just on the highway it's happening now all the time. This can be a safety issue so I'd rather get this fixed now. Please help. Thanks!

- Grand Rapids, MI, USA

problem #22

Jul 022013

G6 4-cyl

  • 37,000 miles
I had someone following me home the other day and when we arrived they asked me why I kept putting on my brakes and letting off. I was not touching the brakes. We cranked up the car and stood behind it and watched and the brake lights would come on and go off without anyone even sitting in the car. I got in and started pressing the brake pedal and when I pressed the pedal the lights would go off. When I let off of the pedal the lights would come on. That's when I started searching this issue and found all the other people out there that have had the same issues with their G6's. in my opinion and everyone else that has this problem, this is a major safety issue. My daughter drives this car and it makes me extremely worried that something could happen. How in the world can GM not be taking action to resolve this problem considering how much talk they advertised about the quality of the new G6? GM needs to stand up and do the right thing here before someone really gets hurt or dies due to an accident involving these brake lights.

- Oxford, NC, USA

problem #21

Jun 122013


  • 60,000 miles
Passenger side lowbeam went out, replaced bulb and it went out again, inspected wiring harness and noticed it was charred and melted, and the wiring near it was also charring and insulation burning off. Replaced wiring harness, bulb went out again a few days later, inspected new wiring harness and noticed it was melting again. Suspect short as even the wires are getting very hot, however no fuse has blown to date. Concerned about sudden lack of visibility at night and about fire risk.

- Watervliet, NY, USA

problem #20

Jul 272012


  • 42,900 miles
I noticed that the cruise control was not working, soon after that someone told me that my brake lights are on most of the time, only going off occasionally. I have tested it, and you can put the car in park and watch the lights go from off to on with out touching the break petal. (they stay on) I am going to take it in for service tomorrow. I have found out this is not an uncommon problem. This should be a recall issue. I know this problem is under investigation. There are tons of complaints.

- Nottingham, MD, USA

problem #19

Jun 012013


  • miles
G6 Pontiac 09 driver side headlite goes out had replaced and went out again.

- Staugustine, FL, USA

problem #18

May 112013

G6 4-cyl

  • 67,125 miles
I bought my 2009 Pontiac G6 sedan brand new. I had problems with my car door locks within the first 6 months. My 3-year-old niece was in the back seat and both rear door locks actually locked open! so we weren't able to shut the doors and drive under "safe" conditions. I had to bungee-cord the doors locked and drive to the closest dealership. The locks had reset and the doors were able to close. Then in 2010, my driver side door locked shut on me! I wasn't able to get out of my car. After 2 hours the door locks reset. The same issue happened again to the rear door. This time, I was able to get an appointment with the dealership. The car was under warranty at the time. I told the dealership that I have been having issues with all the door locks and they said they can only fix the one since that was the only one with the problem at the time. In 2011, I had similar issues whether the doors were locked shut or locked open. Every time I would make an appointment, the locks would reset and the problem was left undiagnosed. In February 2013, my fiance had taken my vehicle to his local mechanic. The mechanic got locked inside my vehicle! then in May 2013, I was with my niece again and the rear doors and driver door locked open! I gave the car some time to reset, and the door unlatched and closed. But then it got locked shut! so I drove my car for 2 days with the doors locked shut. I had to crawl over the passenger side seat and enter/exit through the passenger side door. The dealership told me that the lock mechanism was broken and that it needed replaced for $400 each because it was out of warranty! so I called GM. They said the door locks were not recalled, the car was not under warranty, that it was my responsibility to pay for the repair. Pontiac is very well aware of the door lock issues, and so is- the mechanic. These are faulty locks!

- Evans City, PA, USA

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