Apr 29, 2016, 04:23 PM
Last edit by: IB Advertising
See related guides and technical advice from our community experts:
--
See related guides and technical advice from our community experts:
Browse all: Electrical Guides
- Camaro and Firebird Why Won't Interior Lights Turn On Off<br>Guide to diagnose trouble and recommended solutions.
--
See related guides and technical advice from our community experts:
- Camaro and Firebird: How to Repair and Replace Body Control Module
Step by step instructions for do-it-yourself repairs
Browse all: Electrical Guides
LS1 Body Control Module Problems - The Fix
Launching!
Joined: Feb 2009
Posts: 280
Likes: 0
From: bodymore
heh i got a problem, this happened to my 96..anyway, i pulled the bcm out and looked at it and that part with the T shape looks bad. instead of just doing it though, i approached my father, and he said wtf are you thinking, you dont and cant fix that stuff, you need to just buy a new one. of course i protest, he goes do it and then it will be fucked up and i told you so.. but i really think this will fix it. im not about to shell out hundreds of bucks for a damn computer board if i can fix it myself.
what i am most concerned about is how sometimes i am not very careful i suppose you could say. i am very precise and meticulous, but i don't want to go soldering and drip some solder on another connection and **** everything up. some help here guys? thanks
what i am most concerned about is how sometimes i am not very careful i suppose you could say. i am very precise and meticulous, but i don't want to go soldering and drip some solder on another connection and **** everything up. some help here guys? thanks
Joined: Nov 2003
Posts: 11,334
Likes: 347
From: Jacksonville, FL (originally from Toronto Canada)
What kind of help are you looking for... someone to do it for you? Just be careful with the solder and clean up any extra bits that go where they shouldn't. It's really quite easy if you don't rush. Dripped solder won't hurt anything as long as you remove it before you plug the BCM in again.
Launching!
Joined: Feb 2009
Posts: 280
Likes: 0
From: bodymore
thats what i figure. if i go buy a 15w iron and some really really thin rosin core i should be fine if i am careful. was thinking of maybe getting some sort of mat or something you know, to put over so i don't spill any. you say that as long as i dont connect joints together, or if i get some on the green plastic i have to get it off again still? he keeps going on how robots solder the boards and that its not something a person can fix blah blah.
and i almost forgot another development. i plugged it back in after he yelled at me so he would leave me alone about it and it works now. gonna run with it for a few days and see if it acts up anymore.
and i almost forgot another development. i plugged it back in after he yelled at me so he would leave me alone about it and it works now. gonna run with it for a few days and see if it acts up anymore.
Joined: Nov 2003
Posts: 11,334
Likes: 347
From: Jacksonville, FL (originally from Toronto Canada)
Tell him that robots are used because they are faster and more consistent than people (and they don't need health benefits). That doesn't mean they do anything a person couldn't do - just that they do it the same all day without coffee breaks. Circuit board soldering has been done by hand for many years and is still used on many low volume products where the capital cost of robots too high for the profit margin.
Launching!
Joined: Feb 2009
Posts: 280
Likes: 0
From: bodymore
so far so good, went out last night though it was raining so it wasnt hot as hell like it gets here and the radio didnt cut off at all and the windows worked. just snapped the bcm back in there, if it starts acting up hardcore again im gonna just go buy another iron (i have a crappy battery powered one for when i do audio stuff) and fix it myself.
I'm going to try this resolder fix tonight. I hope it works. I turned the car on today and the damn driver side window started to roll down on its own. I pushed the window switch up and it would go up but if I let go it would come back down. I let it come down all the way and then the crap wouldn't go up anymore. When I would push up on the window switch again there was a noise coming from under the dash like a high pitched hum like something was fried every time I would push the switch. The passenger side works just fine but not the driver.
Joined: Nov 2003
Posts: 11,334
Likes: 347
From: Jacksonville, FL (originally from Toronto Canada)
That is certainly not a BCM problem. It sounds like you have a bad window motor on the driver's side.
The fix listed here is for an interruption of power supply on the RAP (Retained Accessory Power) circuit. When the RAP power is interrupted, the affected devices (radio and windows) stop working because they have no power. It is not a magic cure-all for every problem related to windows or stereo (somebody has claimed that it is affecting the volume control on the radio).
The fix listed here is for an interruption of power supply on the RAP (Retained Accessory Power) circuit. When the RAP power is interrupted, the affected devices (radio and windows) stop working because they have no power. It is not a magic cure-all for every problem related to windows or stereo (somebody has claimed that it is affecting the volume control on the radio).
Well that sux. The window motor isn't more than a year old since it was last replaced. So if it was a BCM issue both windows would not work? I can't verify the radio part because I don't have one 
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'
Brett Foote
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Joined: Nov 2003
Posts: 11,334
Likes: 347
From: Jacksonville, FL (originally from Toronto Canada)
Yes, if the RAP circuit cuts out because of the solder problem in the BCM then power to both windows would be cut off at the same time.
That is certainly not a BCM problem. It sounds like you have a bad window motor on the driver's side.
The fix listed here is for an interruption of power supply on the RAP (Retained Accessory Power) circuit. When the RAP power is interrupted, the affected devices (radio and windows) stop working because they have no power. It is not a magic cure-all for every problem related to windows or stereo (somebody has claimed that it is affecting the volume control on the radio).
The fix listed here is for an interruption of power supply on the RAP (Retained Accessory Power) circuit. When the RAP power is interrupted, the affected devices (radio and windows) stop working because they have no power. It is not a magic cure-all for every problem related to windows or stereo (somebody has claimed that it is affecting the volume control on the radio).
. Dried it out and cleaned it was some electronics cleaner and all is good in the hood 
Joined: Nov 2003
Posts: 11,334
Likes: 347
From: Jacksonville, FL (originally from Toronto Canada)
That's the window express-down control module. It's the box that controls the auto-down feature of the driver's window - that's why only the one window was affected. Congratulations on locating and fixing the problem!
Hello,
I have this same issue in my 99 TA. Windows and Radio cut out randomly while driving.
I have some other electrical quirks as well and I was wondering if they were related.
1. Security light comes on and stays while driving sometimes. If I shut vehicle off it still starts back up so it doesn't seem like a resistor/cylinder issue
2. Just recently when I arm or disarm my factory alarm the popup lights open and close quickly (blinking?!)
3. RAP no longer works, Radio shuts off as soon as I kill the ignition (it used to stay on for 5-10mins)
Any thoughts ?
I have this same issue in my 99 TA. Windows and Radio cut out randomly while driving.
I have some other electrical quirks as well and I was wondering if they were related.
1. Security light comes on and stays while driving sometimes. If I shut vehicle off it still starts back up so it doesn't seem like a resistor/cylinder issue
2. Just recently when I arm or disarm my factory alarm the popup lights open and close quickly (blinking?!)
3. RAP no longer works, Radio shuts off as soon as I kill the ignition (it used to stay on for 5-10mins)
Any thoughts ?
Joined: Nov 2003
Posts: 11,334
Likes: 347
From: Jacksonville, FL (originally from Toronto Canada)
Hello,
I have this same issue in my 99 TA. Windows and Radio cut out randomly while driving.
I have some other electrical quirks as well and I was wondering if they were related.
1. Security light comes on and stays while driving sometimes. If I shut vehicle off it still starts back up so it doesn't seem like a resistor/cylinder issue
I have this same issue in my 99 TA. Windows and Radio cut out randomly while driving.
I have some other electrical quirks as well and I was wondering if they were related.
1. Security light comes on and stays while driving sometimes. If I shut vehicle off it still starts back up so it doesn't seem like a resistor/cylinder issue
RAP is controlled by the BCM and is the circuit that this broken solder fix is designed for.
Registered User
Joined: Jul 2009
Posts: 1
Likes: 0
Or confirm where the BCM is for this year? I'm not sure this is my BCM?
Last edited by 95ConvMaroon; Jul 24, 2009 at 07:11 PM.
Joined: Nov 2003
Posts: 11,334
Likes: 347
From: Jacksonville, FL (originally from Toronto Canada)
Yes, radio and windows are the ONLY two circuits connected to the RAP circuit (they're the only things that remain powered until a door is opened after turning off the ignition).
Teching In
Joined: Jan 2007
Posts: 47
Likes: 0
From: Miami
My aftermarket radio has been cutting on and off intermittently while driving for some time now; and recently, my convertible top switch won't work every once in a while (I find that going into the back where the pump is and switching it to manual mode and back to electric-mode fixes it).
BCM related?
BCM related?
Joined: Nov 2003
Posts: 11,334
Likes: 347
From: Jacksonville, FL (originally from Toronto Canada)
Yes, quite possible. The next time your radio cuts out, try your power windows. If they quit at the same time then it's almost certain that the RAP circuit in the BCM is the problem.