Pontiac G6 Problems

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

Problem Description and Possible Solution

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.

(109 people reported this problem)

Pontiac G6 Vehicles With This Problem

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Average mileage: 93,292 (20,000–200,000)
6 model years affected: 2005, 2006, 2007, 2008, more2009, 2010
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Viewing 1-20 of 55 comments
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?
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
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.
brake lights don't work right,cruise control doesen't work right,radio doesn't work right, door locks don't work correctly
Car wont start, security light on. Told to replace BCM. 1 yr later same problem returns!
New battery and alternator, and still has battery light on dash. Loses power steering randomly and now it won't start and stay running for more than a minute. I think it's bcm
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
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 .
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.
brake lights come on while driving and not pushing the brake...after pushin brakes they go off but come back on and stay on
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
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.
Brake lights pop on while driving without pressing on the brake pedal. Once pedal is pushed lights will dim for about 5 seconds then brake lights will pop on again without pressing the pedal. The cruise control will not work properly at times and when it does will suddenly shut off randomly. I have noticed that when the cruise contol works the brake lights also work properly. Turning the vehicle off and then starting it again will sometimes eliminate the malfunctions but the issue remains later. I have had the brake switch replaced a few times and ensured that fuses are all good. Any idea what else could be causing the issue?
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 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!
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.