Brake lights stay on

Tiny
POSTWICK
  • MEMBER
  • 2006 CHEVROLET MALIBU
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 41,000 MILES
With the brake pedal released, the brake lights (on the back of the car) stay on. If I press the pedal slightly they go off. Then if I press it further down (how you would if you were stopping a little quickly) they come on. I have read a number of people online having the same problem, and the answer is to "adjust the brake light switch at the top of the brake pedal". However, on my car there is no switch there. There is a metal rod that sticks about 6 inches off the left side of the brake pedal, perpendicular to the brake pedal lever. When you press the pedal it turns a white plastic switch (looks like if you make a "peace" sign with your fingers). That is the only switch I see anywhere near the brake pedal under the dash.
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Saturday, August 16th, 2008 AT 3:52 PM

68 Replies

Tiny
RASMATAZ
  • MEMBER
There is a brake pedal switch that needs to be checked first to see if the adjustment is off. If the adjustment is okay unplug the switch tio see if the brake lights stay on if so the BCM is bad and needs to be replaced. You can get a used unit and plug it in but you may need to get it programmed to the car which will cost about $130.00 at a shop. Here are wiring diagrams for the brake lights so you can see how they work and the BCM location with the brake light switch location as well. Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.
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Saturday, August 16th, 2008 AT 4:05 PM
Tiny
POSTWICK
  • MEMBER
This is what the switch I'm talking about looks like. it's the only switch I see. on the 2006 have they combined the sensor that allows you to shift out of park with the sensor for the rear brake lights? this is the only switch I see that is affected by pressing the brake pedal.


http://www.2carpros.com/forum/automotive_pictures/228923_untitled_1.jpg


this switch is NOT mounted on the brake pedal or lever. it is to the left about 6 or 8 inches, and is rotated by a metal rod that sticks off the side of the brake pedal lever and inserts between the two arms on the above switch.
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Saturday, August 16th, 2008 AT 4:20 PM
Tiny
RASMATAZ
  • MEMBER
Disconnect the switch and observe the brake lights-The brake switch/sensor are use to control other function such as the cruise control and shift interlock
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Saturday, August 16th, 2008 AT 4:42 PM
Tiny
POSTWICK
  • MEMBER
Hmm, I also noticed the cruise control no longer works. When I press the on/off button the light does not come on on the dash, and the set button doesn't do anything.

I'll try disconnecting it and report back. Thank you so much for your help.
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Saturday, August 16th, 2008 AT 4:45 PM
Tiny
CHALL52
  • MEMBER
Postwick,

I had this problem and they had to replace the BCM it cost me $462.00 I wish I saw this post first I would have got a used one.

Thanks,
Chris
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Saturday, October 11th, 2008 AT 8:44 PM
Tiny
POSTWICK
  • MEMBER
No I have not resolved it yet. I just make sure to press the pedal down enough that the brake lights come on when I'm stopping/stopped.

I called the repair shop I usually use and they said the sensor is a dealer-only part, and I know what that means $$$.
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Sunday, October 12th, 2008 AT 1:46 PM
Tiny
CHALL52
  • MEMBER
I've changed the brake switch above the pedal and that cost me about $22 from the dealership and no fix.

I did some troubleshooting last night and I found the fuses and relays that interface the brake light system. I swapped a brake relay with the trunk release relay (they are identical) and so far I haven't had problems with my brakes. I've noticed my trunk not responding as quickly, but that might be wishful thinking.

I'm keeping close eye on it, so if anything changes I'll let you know.
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Sunday, October 12th, 2008 AT 7:16 PM
Tiny
TDINMT
  • MEMBER
I know this question is old but hope someone may be able to use this.
#08-05-22-009: Intermittently Brake Lights (Stop Lamp) Do Not Function Correctly, Extended Travel to Shift Out of Park, Cruise Control Inoperative, DTC C0161/C0277 Set (Perform Repair as Outlined) - (Dec 4, 2008)

Subject: Intermittently Brake Lights (Stop Lamp) Do Not Function Correctly, Extended Travel to Shift Out of Park, Cruise Control Inoperative, DTCs C0161/C0277 Set (Perform Repair as Outlined)

Models: 2004-2007 Chevrolet Malibu, Malibu Maxx

2008 Chevrolet Malibu Classic

2005-2009 Pontiac G6

2007-2009 Saturn AURA

.

Condition
Some customers may comment that intermittently the brake lights do not function correctly. Other symptoms may include extended pedal travel required to shift out of PARK, cruise control does not function correctly, and DTC C0161 and/or C0277 may be set.

Cause
The most likely cause of this condition is high resistance due to terminal fretting corrosion in the body control module (BCM) C2 connector (specifically pins C2-18, C2-31 and C2-59).

Correction
DO NOT replace the BCM for this condition. Disconnecting the C2 connector, adding dielectric silicone grease and reconnecting the C2 connector per the procedure below will correct the high resistance condition due to terminal fretting corrosion.

Remove the right side front floor console side trim panel to access to the Body Control Module (BCM).
Locate the C2 connector on the BCM.
Unlatch the C2 connector and disconnect the C2 connector from the BCM.
Reconnect the C2 connector back on the BCM and re-latch.
Repeat Steps 3 and 4 (this step cleans up the terminal fretting corrosion).
Using the Tech 2 , verify the brake pedal position sensor (BPPS) voltage is between:
" 0.88V - 2.11V (for 2004-2006 model years)

" 0.73V - 1.47V (for 2007-2009 model years)

Check for proper operation of the brake lights.
" If the brakes lights are operating properly, remove the C2 connector again from the BCM and proceed to Step 8.

" If the brake lights are not operating properly, proceed to Step 12.

Apply dielectric lubricant (clear gel) GM P/N 12377900 (In Canada, use P/N 10953529) on the BCM C2 pins (apply with a one-inch nylon bristle brush) on all the C2 connector pins (this will treat the pins against fretting corrosion).
Reconnect the C2 connector back on the BCM and re-latch.
Reinstall the right side front floor console side trim panel.
Using the Tech 2 , check that the BPPS ratio is equal to BPPS learned home when the brake pedal is not depressed.
" If they are equal, brake lamps should be operating correctly and no further steps are necessary.

" If they are not equal, perform the Brake Pedal Position Sensor Calibration procedure in SI to complete the repair.

Check the brake lights for proper operation. If incorrect, refer to SI and perform normal diagnostics.
Source(s):
gm tech
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Friday, October 23rd, 2009 AT 3:44 PM
Tiny
NO KNOWLEDGE
  • MEMBER
I just realized my brake lights were doing the same thing. Can anyone put this in simple terms for me, that I can try myself?
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Friday, November 6th, 2009 AT 9:34 PM
Tiny
TDINMT
  • MEMBER
What do you want to try yourself, I took mine to a shop with the tsb and it took them about half an hour and no more problems. The connection is in the passenger foot well, in the center console area by the passengers left foot. The c2 connector, my mechanic said was labeled j2. Just look for the 2. Unplug, plug, unplug, plug and check your brake lights. If they work, unplug one more time add the special grease plug in and forget about it.
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Saturday, November 7th, 2009 AT 12:41 AM
Tiny
PARKWAYCOLLISIONSVCINC
  • MEMBER
We found the resister fuse in the fuse box next to the left fender and unplugged it several times and the lights started working normally. We coated the terminals with dielectric grease and have our fingers crossed but it seems to have done the trick.
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Monday, May 10th, 2010 AT 4:24 PM
Tiny
CAPTNCOIN
  • MEMBER
J2 connector was the trick on one I have fought with all morn. Thanks guys. :)
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Tuesday, February 1st, 2011 AT 6:21 PM
Tiny
MALIBU2006
  • MEMBER
My car is currently experiencing this problem. Have been to the shop 5 times over the last 2 weeks and spent LOTS of $$$$$. Has this problem ever reoccurred for you?
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Sunday, June 26th, 2011 AT 1:24 AM
Tiny
DOLPHANS1
  • MEMBER
Hey guys and Gals, the problem is the brake switch itself, meaning the brake switch sticks. I read this post about a year ago, and the answers many answers I read scared me.

Reason being, all the answers and all the solutions were all over the map. The real issue is the brake switch gets sticky/dirty and needs to be lubricated/cleaned.

I took it to a Chevrolet dealership ($120.00 total charge), they (Chevrolet Dealership)claimed to have replaced the brake switch and not even two weeks went by, and the brake lights started coming on again without notice, rendering the cruise control useless.

I returned the 2006 Malibu back, and they questioned me why didn't I return the car sooner (the lights came on not even 2 days after repair, but not all the time.)

My reply was, well I have to work and why didn't you fix it right the first time.

A few hours later they (Dealership) called and said they couldn't find anything wrong with the car, all they did was lubricate the brake light switch.

It has been about a year since the lubrication and the problem has not returned and the cruise control works like its supposed to.

D-1
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Tuesday, July 19th, 2011 AT 3:20 AM
Tiny
FAYBY43
  • MEMBER
I have a malibu 2006, the brake lights were staying on, we replaced the relay switch still wouldn't work. Then we read that the brakes had to be re calibrated with a tech 2 scan tool from a dealership. That worked for a while now another year has passed and they have come back on again.

I have been reading about it and most come to the conclusion, it's a connection on the right side console, which was stated that even a dealership noted that the c2 connection
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Wednesday, September 14th, 2011 AT 2:36 AM
Tiny
SILENTBUTDEADLY
  • MEMBER
  • 2006 CHEVROLET MALIBU
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 40,650 MILES
I have a problem with my brake lights. They come on without the pedal being pressed down. I have been on the internet and found some info on it. I replaced the sensor switch but did not adjust it(not sure if that's the problem) I also took the center console apart and took the bcm off and put the special grease on it but very very little. Hooked it back up fine for a week then all over again. I took it to a mechanic who ran diagnostics on it and said I need a new bcm. I can get a used one, but not sure if that is the solution. I guess I'm gonna try to unplug, plug, unplug, plug and put more grease on it. This is soo annoying. Any guidance would be great!
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Thursday, January 3rd, 2019 AT 9:51 AM (Merged)
Tiny
BMRFIXIT
  • EXPERT
Should start with the switch on the brake pedal 1st
it should be all you need and make sure it is adjusted
if light staying on
if light on and some not
check if 3rd light on when other out and if so check multifunction switch
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Thursday, January 3rd, 2019 AT 9:51 AM (Merged)
Tiny
SILENTBUTDEADLY
  • MEMBER
I have no idea how to adjust the brake sensor if that is what your telling me to do. Any direction would be great. Also when I did the BCM the first time I dont hink I put enough grease I also didnt plug it in and un plug a couple of times to get the grease in there which is why I'm gonna do it a second time. Why would the mechanic hook it up to the computer and say I need a new BCM or show me a place to get used and do it myself? Could that be the problem? Yes all the brake lights are lighting up when I press the brake in and also when it does it on it's own.
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Thursday, January 3rd, 2019 AT 9:51 AM (Merged)
Tiny
LEADO
  • MEMBER
  • 2006 CHEVROLET MALIBU
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 37,000 MILES
Brake lights stay on unless you push pedal hard then lights go off and push a little bit more lights come on again.
Replaced brake sensor switch(some refer as brake switch.)
Brake pads are good and do not have any braking problem that I know about. Jim
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Thursday, January 3rd, 2019 AT 9:51 AM (Merged)
Tiny
LEADO
  • MEMBER
I found the problem. Theres a black electonic module located on top of the transmission with a white plug. I removed blue lock pin, pulled gray lock to let plug to be pulled out of black module. Didn't see anything but sprayed with silicone spray and reconnected everything. Most have been moisture or water in connector. Fixxxxxxxed.

Plug can be seen with hood up. And from looking from drivers fender down between fuse box cover and fire wall. Hope this helps somebody. Jim
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Thursday, January 3rd, 2019 AT 9:51 AM (Merged)

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