You don't need to waste time or money with a mechanic. Simply apply the dielectric grease to the BCM connector as stated on this thread (look at my post on page 4). Less than $10 and 10 minutes of time and the problem will be solved!I am currently dealing with this problem. I have a 2007 G6 and my break lights were going on when I was accelerating/driving and the lights would go off when i would press the break pedal. Additionally, this has caused the cruise control to malfunction as well. I also have to floor the break to shift gears and when I first turn on the car and press on the break, there is a loud growling sound that happens. Its at my mechanics now so hopefully it gets fixed.
CharlesP is absolutely correct... don't waste money or time.at a mechanic. Here is a step by step:You don't need to waste time or money with a mechanic. Simply apply the dielectric grease to the BCM connector as stated on this thread (look at my post on page 4). Less than $10 and 10 minutes of time and the problem will be solved!
So the radio display dropout issue is also caused by BCM terminal corrosion. I hadn't considered that.I was having the same problem as well as my radio intermittently dropping the display then coming back. The brake light issue was worst on bumpy roads but even cruising down relatively smooth freeway it would drop out. I knew that the electrical issue had a mechanical cause, so I disconnected my negative battery terminal, removed each BCM connector, added silicone dielectric grease not to fix it but to prevent further problems, then reinstalled then removed each connector three times before reseating them. The reason for installing then removing is that the connector contacts are made to be self-wiping (cleaning) when they are inserted and removed, and basically what I did was to give them an extra 'massage' to clear off more crud (oxidation). Since doing this, the car has been fine (except for a new driver's side rear door lock hangup at high temperatures).
But I'm guessing that your brake lamps did not go off when you pressed down the pedal.Just saw this thread and had the trouble with brake lights coming on while driving and it was also kicking off the cruise control. I realized what the problem was when it happened at night and I saw the roadsigns behind me glowing bright red and knew it was the brake lights.
My local (at the time) Norfolk, NE GM dealer said it was the brake pedal sensor out of calibration. It took a couple of tries and then a replacement switch to solve the problem and it has not acted up in over 3 years.
Even though the stop lamp circuit now works fine, I'd go ahead & do the BCM connector cleaning procedure & applying of dielectric silicone gel.They would switch off by depressing the pedal only 1/8" or so. Sometimes the lights would stay off, sometimes I'd have to tap the pedal a few times to keep them off. They would come on during regular braking.
I was searching about the same problem. I just found out my remote start wont work because it senses the brake is being applied, so it shuts the motor off. My brake lights stay on until I apply the brake. I was told the brake switch is bad. I am wondering if there is more to it. I have an 09 G6 and I have replaced the headlights and the tail lights more times then I can remember. I know on the drivers side headlight, there was a recall on the harness.. But I haven't heard anything about this brake switch problem. Is it hard to replace?My brake light switch keeps going out which makes it to where my brake lights are on until i press on the brakes then the brake light goes off. i have a 06 G6. i have had it replaced two times and it went out again. has anyone had this problem and what can i do to make sure it doesnt keep going out. my mechanic says its the way it is designed but this has happened 3 times in three months! please someone help!!!:
...My brake lights stay on until I apply the brake. I was told the brake switch is bad...