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.Google+
Car Problem Reports
Pontiac G6 Poor Terminal Contact at BCM Connectors May Cause Electrical Issues
Pontiac G6 Problem
Average Mileage: 77,845 mi (20,000 mi - 160,000 mi)
Visitor, 2007 Pontiac G6, 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
Visitor, 2009 Pontiac G6, 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
Visitor, 2009 Pontiac G6, 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.
brake lights come on while driving and not pushing the brake...after pushin brakes they go off but come back on and stay on
Visitor, 2008 Pontiac G6, 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
Visitor, 2008 Pontiac G6, 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.
Visitor, 2005 Pontiac G6, 155,000 mi
My lights wouldnt go off, and now nothing in my car works,
Visitor, 2007 Pontiac G6, 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!
Visitor, 2007 Pontiac G6, 90,000 mi
Car wont start, security light on. Told to replace BCM. 1 yr later same problem returns!
Visitor, 2007 Pontiac G6, 60,000 mi
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.