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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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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 I am wondering if I can repair it because supposedly my specific module is obsolete and hard to obtain.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
Not a good idea espically if the relay is bad I did this an it literally smoked my BCM However for around $300 you can get a pre-programmed one from the guys called 1 day auto i believe is their name. Still cheaper than the thousand dollar or more that the dealer will charge to you put in a new bcm an reprogram it.
Just saying that I tried that method first. The problem is the circuit boards are multi-core boards so heat can damage it. All I am saying is its not for everyone to try it. Believe me I went to a junkyard an grabbed another BCM myself an on this BCM the relay went bad for the power locks this time....Not going to risk pulling the relay off my old an swap it with the bad one on this current board instead i'm going to save the nasty burnt electronic smell in my truck again but just buying a new one already programmed is a safer option.
However usually when the relay goes bad it pops/melts the solder due to the heat generated from the relay going bad. My comment is only to educate those willing to give it a try an save the money they do need to know the risk. Mine worked for a week until it smoked I still have the smoked BCM.
that makes no sense....you're saying don't attempt to save $300 by fixing something that's already broken...if it burns up it doesn't matter, it was already broken, in most cases it's not going to burn up. additionally, i paid myself by keeping the $300. that's the whole point of my channel lol
Awesome, it's a very useful skill that you can use throughout your life. For 1500 bucks it's worth getting some practice in and seeing if you can fix it yourself lol. Also they go for about 200 used on ebay. Or I could solder it for about 32.99 lol. I repair climate controls for Preludes regularly and have a repair service listed on my ebay store, if you buy that and send me the BCM I could take care of it. My ebay store link can be found in the links in my channel banner or in the "about" section. Either way, thanks for watching!!
+a DIY Car Guy
I am looking in to learning how to solder. This looks like a handy skill, and I think it would open up a whole new level of DIY for me. The dealership wants to charge $1500 to replace the BCM.
Thanks for posting this video, and helping people like me learn about new DIY possibilities.
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