Car Problem Reports

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

Pontiac G6 Problem
35 Reports
Me Too

Model Years Affected: 2005, 2006, 2007, 2008, 2009

Average Mileage: 79,304 mi (20,000 mi - 160,000 mi)


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.

  • Visitor, , 82,000 mi

    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

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  • Visitor, , 66,000 mi

    brake lights don't work right,cruise control doesen't work right,radio doesn't work right, door locks don't work correctly

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  • Visitor, , 40,000 mi

    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.

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  • Visitor, , 90,000 mi

    Car wont start, security light on. Told to replace BCM. 1 yr later same problem returns!

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  •  Rookie

    brake lights come on while driving and not pushing the brake...after pushin brakes they go off but come back on and stay on

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  • Visitor, , 90,000 mi

    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

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  • Visitor,

    Rear middle brake light always on

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  • Visitor, , 128,000 mi

    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.

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  • Visitor, , 155,000 mi

    My lights wouldnt go off, and now nothing in my car works,

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  • Visitor, , 74,000 mi

    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!

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