BCM issues 99 m6
Thread Starter
Racer
Joined: Jul 2005
Posts: 274
Likes: 0
From: oklahoma
BCM issues 99 m6
I have diagnosed the bcm being bad after receiving a no communication error by checking codes.
The car is a 99 m6 coupe, bcm 09381399
Are there any other BCMs I can use or is this the exact part I need? I've read conflicting information using Google, looking for some clarification (01-04 BCMs seem to be about 1/2 price)
Also, after I get a different BCM do I have to have the dealership tune it or is this something I can do with HP tuners
The car is a 99 m6 coupe, bcm 09381399
Are there any other BCMs I can use or is this the exact part I need? I've read conflicting information using Google, looking for some clarification (01-04 BCMs seem to be about 1/2 price)
Also, after I get a different BCM do I have to have the dealership tune it or is this something I can do with HP tuners
Last edited by NXS; Dec 31, 2015 at 06:36 PM.
.
Joined: Apr 2013
Posts: 5,032
Likes: 1,156
From: Oregon
St. Jude Donor '14-'15-'16-'17-'18-'19-'20-'21-'22-'23
Read thru this old post. It may shed some light on it
https://www.corvetteforum.com/forums...ogram-bcm.html
https://www.corvetteforum.com/forums...ogram-bcm.html
Thread Starter
Racer
Joined: Jul 2005
Posts: 274
Likes: 0
From: oklahoma
Thanks, I'd read that thread and bookmarked it.
If I'm understanding correctly I MIGHT be able to use a different BCM but it's a risk so I'll get the same servo number.
From there I plug it in, do the 3 step 10 minute vats relearn then remove or change the fuel/mph cutoff, at this point I can drive it to the dealer to get the RPO codes set. Is this correct?
Also there was some terminology in that thread I wasn't familiar with:
CL failure
K-harness
installing the CLB
If I'm understanding correctly I MIGHT be able to use a different BCM but it's a risk so I'll get the same servo number.
From there I plug it in, do the 3 step 10 minute vats relearn then remove or change the fuel/mph cutoff, at this point I can drive it to the dealer to get the RPO codes set. Is this correct?
Also there was some terminology in that thread I wasn't familiar with:
CL failure
K-harness
installing the CLB
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Melting Slicks
Joined: Mar 2001
Posts: 2,668
Likes: 849
From: New Jersey
You can use a used BCM, and get the RPO option codes reprogrammed, BUT you will not be able to reprogram the airbag control module (SDM) serial number that is stored in the BCM, which will cause a 1001 DTC (Configuration Error) in the airbag module. This DTC will cause the airbag light to stay on, and the airbags will be disabled unless you reset this DTC everytime after you start your car. (reset thru the DIC).
Only a new BCM, that was never initially programmed, can have the SDM serial number programmed into it.
Only a new BCM, that was never initially programmed, can have the SDM serial number programmed into it.
Last edited by ersatz928; Jan 3, 2016 at 10:27 PM.
Tech Contributor
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
If it were me,, I would get my tooth brush out and some alcohol and clean that board and see if that resolves the issue. Sure cant hurt anything.
Check the HVAC Air Box Drain as if it doesnt allow the condensation to drain out of the HVAC Air box, it will flood back in through the hvac fan motor and leak on the BCM.
Check the HVAC Air Box Drain as if it doesnt allow the condensation to drain out of the HVAC Air box, it will flood back in through the hvac fan motor and leak on the BCM.
Thread Starter
Racer
Joined: Jul 2005
Posts: 274
Likes: 0
From: oklahoma
I ordered the bcm on the morning of the 1st, still has not arrived and it had 2 day priority shipping.
I wasn't aware of the air bag light issue.
At this point I'm almost ready to pull all the factory efi and replace with an aftermarket unit... If it's going to have a bunch of dash lights on I don't see any reason not to.
I wasn't aware of the air bag light issue.
At this point I'm almost ready to pull all the factory efi and replace with an aftermarket unit... If it's going to have a bunch of dash lights on I don't see any reason not to.