Poor Terminal Contact at BCM Connectors May Cause Electrical Issues on Pontiac G6

Various electrical issues may be caused by poor terminal contact at the body control module (BCM) electrical connectors. Proper diagnoses will be required to confirm faults are related to poor BCM connections.

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Average mileage: 85,105 (20,000–200,000)
6 model years affected: 2005, 2006, 2007, 2008, more2009, 2010
52 people reported this problem
38 people shared problem details
2008 Pontiac G690,000
Brake lights stay on while driving and won't go off till I press or tap the brakes. When I release the brake lights come back on with in 3 to 5 secs later. I have replace the brake switch twice and it fixed it for 2 or 3 days but the problem returns
2009 Pontiac G682,000
door ajar light constantly on horn will go off, in the middle of the night interior lights stay on while driving dash registers: key fob battery low waiting to install a new BCM
2007 Pontiac G666,000
brake lights don't work right,cruise control doesen't work right,radio doesn't work right, door locks don't work correctly
The ABS light, battery light, ESC warning on radio all came on, then lights when out. I thought this was an alternator issue. Changed the alternator and still same thing is happening. Took the alternator and had it tested and it tested good. What else could it be?
2007 Pontiac G690,000
Car wont start, security light on. Told to replace BCM. 1 yr later same problem returns!
2008 Pontiac G6128,000
Same problem with brake lights. They go on when driving and off when pedal applied. There is a recall for G6 up to 2007 for this due to fatal accidents. Still waiting on 2008 and up recall. Quick fix pull the BCM and lube the heck out of it with dielectrical grease. Wiggle it back into place and push it in hard. Try brakes again - if lights are still on put more grease on it. Issue being is the connectors on the BCM are corroding, you can also clean the connectors and grease it up too. Due to poor placement condensation from AC creates humidity and corrosion with the BCM. Been dealing with this issue for a few years now.
2009 Pontiac G640,000
First noticed as cruise stopped working. Dealer applied diaelectric grease to BCM connectors, worked for about one day. Then I realized my brake lights were on all the time, dealer replaced Brake Pedal Position Sensor (BPPS). Worked great for 5 days. Now dealer thinks the BCM needs to be replaced because they cannot even calibrate the BPPS but htey may try another new BPPS first. Very frustrating, dangerous, and costly.
brake lights come on while driving and not pushing the brake...after pushin brakes they go off but come back on and stay on
2005 Pontiac G6155,000
My lights wouldnt go off, and now nothing in my car works,
While driving, pressing the gas to the floor, barley goes. Gradually gains speed. Once it's going, it cruises...without touching the gas pedal at all!! The engine light & Traction Control lights came on and the display states the engines power has been reduced. The lighter plugs/ports no longer work, either one. On my way for diagnosis/repair now.
Rear middle brake light always on
My car Service airbag comes on all the time and the clock keeps resetting itself And some times the indicators that says you have a flat tire or low tire keeps coming on . This is getting to be a problem .
2006 Pontiac G660,000
Key fobs didn't work, clock on radio would constantly reset to midnight, airbag warning light comes on intermittently and various other electrical issues. Spent hundreds diagnosing and replaced BCM- didn't resolve problem. Then mechanic checked vehicle battery- it was low and needed to be replaced- all problems resolved.
2007 Pontiac G674,000
Brake lights come on when shifting out of park and stay on until I put it back into park! can't drive it, BCM and recalibration/programming to expensive so I have a perfectly good car (except the fore mentioned) and haven't moved it out of my garage for a year!
2010 Pontiac G698,000
no cruise control, tc alarm comes on, esc alarm comes on, low beam light will work on one side for a while, then the other side and then both. Both sides does not go out at the same time
2007 Pontiac G660,000
Brake lights work on and off - I was told by the GM dealership that I need to get a new BCM before more problems occur.
2006 Pontiac G6130,000
I have been dealing with the BCM issue for years. I was originally told my VIN was not included. Had the reversed brake lights. I would clean the BCM connector and it would go away for awhile. The time between cleanings got shorter. Finally I got a recall and they replaced the brake light switch. seemed to work for awhile. Now the steering wheel jerks out of your hand and drains the battery. This car is dangerous.
2008 Pontiac G6100,995
Brakes lights used to stay on. Once I press the brakes they go off. Now they will not come on at all. Radio keeps turning off.
2008 Pontiac G664,000
My cruise control stopped working:(
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