Paging Mike Norris - Body Control Module (BCM)
Thread Starter
Melting Slicks
Joined: Aug 2000
Posts: 2,146
Likes: 2
From: Florida
Paging Mike Norris - Body Control Module (BCM)
My friend has a 98 C-5 w/135,000 miles that has gone wacky, all types of DIC messages, start stalls, windows don't work, gauges quit. Bottom line, my local vette man says its the BCM. The owner doesn't want to take the car to the dealer but my local shop says they don't have the electronics to get the BCM diagnosed, only replaced.
Is there anybody that has had the same problem and found an option like a slighty used BCM or an extra BCM collecting dust from a kind forum reader. Any suggestions, ideas or any feedback would be greatly appreciated ?
Steve
561-305-2428
Boca Raton Florida
Is there anybody that has had the same problem and found an option like a slighty used BCM or an extra BCM collecting dust from a kind forum reader. Any suggestions, ideas or any feedback would be greatly appreciated ?
Steve
561-305-2428
Boca Raton Florida
Le Mans Master
Joined: Mar 2005
Posts: 5,811
Likes: 31
From: Minnetonka MN
St. Jude Donor '06
is it the "ebcm" as in electronic brake control module? that usually has the ABS/AH/TCS errors appear on the DIC.
member absfixer on this forum fixes them for $150.
Aj
member absfixer on this forum fixes them for $150.
Aj
Burning Brakes
Joined: Mar 2005
Posts: 1,227
Likes: 15
St. Jude Donor '06
Sounds like problems a BCM could cause. BCMs can be bought online for around 500 bucks. Once its installed, it just needs to be programmed with a tech2. You should be able to drive the car to the dealer, install the new BCM and the just have them program it. The car wont start with the new BCM in until options have been programmed and the BCM has been linked to the car...i could see them charging 100-150 bucks to program so somewhere between 600-700 bucks. I bet the dealer would charge 2000 bucks to order the bcm, install it and them program.
On second thought, it might be worth it to pull the bcm out and clean the contacts and make sure theres no corrosion or water leaks around it then plug it back in. its in the kick panel on the passenger side under the floor mat. It takes 2 seconds to pull it out and check it
On second thought, it might be worth it to pull the bcm out and clean the contacts and make sure theres no corrosion or water leaks around it then plug it back in. its in the kick panel on the passenger side under the floor mat. It takes 2 seconds to pull it out and check it
Last edited by Stealthy4; Jan 10, 2009 at 08:43 PM.
Drifting
Joined: Sep 2006
Posts: 1,571
Likes: 1
From: st.louis mo.
Had the same issue on my brothers 2000 windows and locks stopped working reduce engine power and all kinds of weird stuff. I did some research and found a few people were having problems with the connectors to the doors(I know weird) but there was corrosion there. took em apart cleaned em and havent had a problem since. If you giggle the wires around and the windows start working this mwy be your problem. It could be the bcm but i just thought i;d mention this to you. good luck 
P.S. the connectors are behind the kick panels.
P.S. the connectors are behind the kick panels.
Drifting
Joined: Jul 2007
Posts: 1,365
Likes: 1,818
My friend has a 98 C-5 w/135,000 miles that has gone wacky, all types of DIC messages, start stalls, windows don't work, gauges quit. Bottom line, my local vette man says its the BCM. The owner doesn't want to take the car to the dealer but my local shop says they don't have the electronics to get the BCM diagnosed, only replaced.
Is there anybody that has had the same problem and found an option like a slighty used BCM or an extra BCM collecting dust from a kind forum reader. Any suggestions, ideas or any feedback would be greatly appreciated ?
Steve
561-305-2428
Boca Raton Florida
Is there anybody that has had the same problem and found an option like a slighty used BCM or an extra BCM collecting dust from a kind forum reader. Any suggestions, ideas or any feedback would be greatly appreciated ?
Steve
561-305-2428
Boca Raton Florida
Check both doors by pulling back the rubber accordian boot between the door frame and the body, There is a blue connector that has wires going into/outof the connector. There may be one or more wires that are bare and are grounding out. Here's a link with pictures of what I am talking about.
http://forums.corvetteforum.com/c5-t...n-long-30.html
Then scroll down to post #586.
May be worth a shot and if that's the problem the fix is a lot cheaper than the BCM. Bare wires can be repaired with liquid electrical tape available at most auto parts stores.
Melting Slicks
Joined: Feb 2006
Posts: 2,938
Likes: 62
From: Columbia SC
I had some of the same issues on my 00 vert. After research and checking the BCM, which had gotten wet, I knew it was to the dealer dor a new BCM. They put in a new BCM and did the program of the new BCM all for $425.00.
Safety Car
Joined: Oct 2003
Posts: 3,854
Likes: 8
From: Pearland, TX
Cruise-In VIII Veteran
St. Jude Donor '03 thru '20
My car had the same symptoms and it was in fact the harness from the body to the door that was the cause.
If you are getting "No Comm" codes, I'll bet you have a wiring issue.
Best of all, it's a simple fix
If you are getting "No Comm" codes, I'll bet you have a wiring issue.
Best of all, it's a simple fix
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Burning Brakes
Joined: Mar 2005
Posts: 1,227
Likes: 15
St. Jude Donor '06
FYI: different year BCMs cost different amounts. I know my 97 BCM is around 250 but the 98s are around 500...
Also, i didnt read that 600+ post thread but i dont think the door jam connectors can cause the car not to start (which is one of the symptoms the OP mentions)
The connector in the door jam is onlyfor the control modules (which i think operate the windows and locks) in the doors and the speakers....
Pull the codes from the DIC and make sure the battery connections are tight.
Also, i didnt read that 600+ post thread but i dont think the door jam connectors can cause the car not to start (which is one of the symptoms the OP mentions)
The connector in the door jam is onlyfor the control modules (which i think operate the windows and locks) in the doors and the speakers....
Pull the codes from the DIC and make sure the battery connections are tight.
Last edited by Stealthy4; Jan 11, 2009 at 11:28 AM.
Safety Car
Joined: Oct 2003
Posts: 3,854
Likes: 8
From: Pearland, TX
Cruise-In VIII Veteran
St. Jude Donor '03 thru '20
I don't see where he says the car won't start ... apologize if I missed that. What I did read is that is starts and stalls which did happen during the time when I had widow, gage and DIC problems.
I hope that some of the help suggested cures the problem.
Also, if it turns out to be the EBCM, it can be repaired rather than purchased new for under $300 with a warranty.
I hope that some of the help suggested cures the problem.
Also, if it turns out to be the EBCM, it can be repaired rather than purchased new for under $300 with a warranty.
Race Director
Joined: Apr 2005
Posts: 11,138
Likes: 11
From: Fremont CA
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18-'19-'20
NCM Sinkhole Donor
Check with CF user 1998 GTR. Sounds like exactly the problem he had and it ended up being a (bent? 1/2 broken?) bad fuse. The fuse was not actually blown. When they found the problem, all was good. Here's his info....
http://forums.corvetteforum.com/memb...-1998-gtr.html
Good luck
http://forums.corvetteforum.com/memb...-1998-gtr.html
Good luck
Burning Brakes
Joined: Mar 2005
Posts: 1,227
Likes: 15
St. Jude Donor '06
I don't see where he says the car won't start ... apologize if I missed that. What I did read is that is starts and stalls which did happen during the time when I had widow, gage and DIC problems.
I hope that some of the help suggested cures the problem.
Also, if it turns out to be the EBCM, it can be repaired rather than purchased new for under $300 with a warranty.
I hope that some of the help suggested cures the problem.
Also, if it turns out to be the EBCM, it can be repaired rather than purchased new for under $300 with a warranty.
Regardless, BCMs are easy to remove and install...
Drifting
Joined: Sep 2006
Posts: 1,571
Likes: 1
From: st.louis mo.
FYI: different year BCMs cost different amounts. I know my 97 BCM is around 250 but the 98s are around 500...
Also, i didnt read that 600+ post thread but i dont think the door jam connectors can cause the car not to start (which is one of the symptoms the OP mentions)
The connector in the door jam is onlyfor the control modules (which i think operate the windows and locks) in the doors and the speakers....
Pull the codes from the DIC and make sure the battery connections are tight.
Also, i didnt read that 600+ post thread but i dont think the door jam connectors can cause the car not to start (which is one of the symptoms the OP mentions)
The connector in the door jam is onlyfor the control modules (which i think operate the windows and locks) in the doors and the speakers....
Pull the codes from the DIC and make sure the battery connections are tight.
On a side note the bcm in my grand am got wet and i got a used one from a junkyard.I found a place that said they could try and reprogram it for 75.00 but could not gurantee it would work.I took it to the dealer and they said once a bcm is programmed to a car you cant reprogram it.I cant say if this is true or not but i just ordered one and had them program it rather than wasting another 75.00$