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This is how to repair a body control module circuit board on a General Motors vehicle, for cheap or free as long as you have the low cost tools. This one is from a 2000 Cadillac Escalade, but there are similar modules in other GM vehicles like the Camaro. The symptoms are that the windows and the radio will be intermittent or stop working completely.
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My high beam have constant power will not turn off.2012 buick verano What would I look for on the bcm .
Take it from a real soldering expert in hand soldering, you do not have to go through all the steps if your board is a good board and they used good solder, the only thing is to use plenty of flux and you are not going to find any tin-lead solder in most places nor is it necessary. One of the problems with these boards is they use the solder to hold the parts on the board, never recommended for moving machinery, the tabs should be twisted to hold the part on the board first, then soldered. Get a bigger soldering iron for larger parts like this.
The same one was burned on another video.
This is awesome. Also: FYI – This same process can be used to fix your flakey (dim, failing pixels, etc) spedo display panel. Cold solder joints! What a pain!
I had a problem with the driver side indicators not working on my Fiat,replaced the indicator/turn signal relays on the BCM circuit board.Now 'both' sides of my car the turn signals aren't working lol,and more interestingly the car no longer recognises my keys!!!!
I only replaced two relays damnit!
Looks like you got the board hot
Just bought a used 2007 Escalade. No brake lights (light at top of back hatch is working) , headlights won’t come on, signals/flashers only work at bottom of front bumper but not on fenders or on the back of the vehicle. Anyone had these issues? Sounds like maybe a bad BCM.
Does this work for a bcm that has gotten wet? I bought a mini cooper that had the passenger side window down and it got soaked. Car runs but its doing all kinds of crazy stuff.
Put some flux on it next time ….
When repairing solder joints like this, they usually fail because modern solder is lead free and brittle. Lead in solder allows it to be flexible and less prone to breaking like this. Repair with a leaded solder like 60/40 tin/lead and use a little flux on the joint before starting. The flux will allow to solder to flow better and make a better connection with less effort. I use Chipquik No-Clean flux. You can use a standard solder pen like this guy has. Heat it up and rub the tip into a wet sponge to clean the old gunk off before starting.
I need bcm repair.
This seems to be a typical problem. Mine, too. I just did a resolder. OK for now. Does anyone know the reason for the problem. What is causing the overheating? I habe a felling, I'll be doing this again to replace the relay, which seems a bit hearder to find. Comments appreciated. Did you do a fix and did it fail, again? 🙂
Where is the video on how to remove BCM? There is no click here button
Great video…! My 2007 Ext Cadillac reverse lights stay on when the key is turned off and I've already replaced the switch that's connected to brake pedal.. could this be something faulty in the BCM ?
From the bottom of my heart THANK YOU FOR THIS VIDEO. 2 months of dealing with issues. Cadillac dealer saying $850+ to fix. 1 dead batter 1 set of burnt cables lol. And then this and my spot was the exact same bad spot. I fixed in 2 min and now all work. Thank you thank you thank you sir…keep doing you!!!!
What was the error code ?
I had a repair tech tell me that my car needs this because my car wont start. Does this sound right?
Great video. I have a question. My car Toyota Camry 2012 bought it days ago. I can’t unlock the door with remote key (it doesn’t work at all) I can only open it with the key and only the driver door opens. Then I need to start the car in order to open the other doors. When I want to lock the doors I have to do it while I’m in the car otherwise I can only lock the driver door with key. Lastly, the clock is always resetting itself every time I turn the car on. Sorry it’s a long story, your help is much appreciated! Thanks,
I'm not the master of soldering, but I've had a lot of experience after taking it up as a hobby. I would recommend to anyone else trying this to first apply a small amount of flux to the bad solder joint and remove all of the old solder using desoldering braid or a desoldering iron/remover from the area around the pin with the defective soldering joint. Once the area is cooled, clean the area with isopropyl alcohol to prepare it for the repair. When the area is dry, again, apply a small amount of flux to the pin and the area directly next to the pin on the circuit board. Finally, solder the pin back onto the circuit board, preferably using 60/40 tin lead solder. That type of solder is recommended for electronics, as it is less brittle and will last longer. Just remember to be cautious not to inhale the fumes from the solder and wear gloves or wash your hands once the work is completed. Solder containing lead is slightly hazardous and should be used cautiously.
Can you help me diagnose if the BCM might be what's wrong with my 1995 Buick Riviera?
The radio will change stations randomly a lot of times and also the volume will go all the way up and I have to manually turn it back down. Also, the climate control/ac temp settings will fluctuate up or down and these things seem to happen a lot of times when I apply the brake pedal. Also, sometimes when I'm driving the climate control/ac will come on by itself. It just started doing this(ac coming on by itself) within the past week and I'm not sure if it only does it when I apply the brake or if it does it randomly. But a lot of these things seem to happen when I'm just starting the car and hit the brake pedal. Does this sound like a bad BCM or just a short/shorts somewhere in the wiring?
My bcm needed to be replaced, door locks were unblocking/ locking while I was driving and even when the key was in the ignition. Radio light's statred to flicker as well. Drained my battery bought a used bcm for only $50 had someone to program it for $200 problem solved and way cheaper than what the dealership tried to charge me!
Hi "a DIY Car Guy" I have a 2002 Park Avenue – running lights and dash lights go out, and intermittent buzzing under the dash and flickering headlights that kills the battery, then it stops for a while. Does this sound like a "re-solder the BCM" issue to you? (BTW fuses are good) Oh, and please forgive if this sounds like a dumb question, but is the "body control module" (BCM) the same as the "lamp control module" (LCM as listed in the fuse box)?
I'm thinking my BCM is my issue in my suburban. Abs light, parking brake light Service 4wd,service brake system, no blower motor, no cruise, and it doesn't crank sometimes. New ignition switch, new starter, new battery, new water pump, fuses are good.
I guess it's worth a shot to look at it. Do you now if a bcm will cause the specific issues I'm having? My windows and radio work fine.
This is great info. Now a question for you… have you used this method on any other module? I have a 2003 CTS with a bad roof mount antenna module. This module is responsible for receiving signals from the remotes for door unlock and trunk popper. I am wondering if I can repair it because supposedly my specific module is obsolete and hard to obtain. I also don't want to bring to the Caddy dealer to have them reflash the new module (if i am lucky to find one). Just the reflash will probably cost whatever Caddy labor is for an hour. It's literally less than 5mins to flash with their Tech II Scanner and the closest dealer ship is like 20 miles away from me. Lol
No reprogramming. Only when you buy a new one.