2002 BCM Issue
Thread Starter
Heel & Toe
Joined: Aug 2008
Posts: 23
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2002 BCM Issue
Last week my message center started displaying several warnings like Service Traction Control, Low Oil, ABS, etc... I took it to a local shop and they said the BCM (body control module) was bad. He wanted $700 to replace it and said it would still have to go to the dealer to program. I found a new AC Delco BCM on ebay for $234. I called the dealer and they'll program it for $80 if I have everything loose so all they do is unplug the old and plug in the new module. I have two question. 1) Does this sound like a bad BCM? 2) Is the BCM located behind the passsenger side kick panel?
Thanks for the help,
Jim
Thanks for the help,
Jim
Burning Brakes
Joined: Mar 2005
Posts: 1,227
Likes: 15
St. Jude Donor '06
1. Write down all the codes from the DIC and if it says HC, H, or C after the code
2. Clear all the codes from the car
3. Take the car for a drive and see which come back
4. Take note of the ones that come back
5. Let us know what the codes are before and after you clear them
The BCM is located behind the footwell. You can use gmpartsdirect.com or the forum vendor Gene through gmpartshouse.com to find a new BCM assuming that is the problem. They are about 250-300 bucks for a new one and are literally just an unplug and plug operation. However, it has to be linked to the PCM and programmed with the options the car came with (a new BCM has no options turned on) so they have to turn them on. If you decide to go this route, i suggest you drive te car to the dealership with the old BCM in...take some tools with you to disconnect the battery. And then just plug in the new BCM. The car doesnt need to go anywhere to be programmed...they just use a Tech 2
However, it could be more than just a BCM or something completely different from the BCM.
For example: usually the traction control problems and ABS are linked with the EBTCM, the low oil is usually the PCM. But all the modules are linked so who knows!
2. Clear all the codes from the car
3. Take the car for a drive and see which come back
4. Take note of the ones that come back
5. Let us know what the codes are before and after you clear them
The BCM is located behind the footwell. You can use gmpartsdirect.com or the forum vendor Gene through gmpartshouse.com to find a new BCM assuming that is the problem. They are about 250-300 bucks for a new one and are literally just an unplug and plug operation. However, it has to be linked to the PCM and programmed with the options the car came with (a new BCM has no options turned on) so they have to turn them on. If you decide to go this route, i suggest you drive te car to the dealership with the old BCM in...take some tools with you to disconnect the battery. And then just plug in the new BCM. The car doesnt need to go anywhere to be programmed...they just use a Tech 2
However, it could be more than just a BCM or something completely different from the BCM.
For example: usually the traction control problems and ABS are linked with the EBTCM, the low oil is usually the PCM. But all the modules are linked so who knows!
Last edited by Stealthy4; Aug 4, 2008 at 10:21 PM.
Thread Starter
Heel & Toe
Joined: Aug 2008
Posts: 23
Likes: 0
However, it could be more than just a BCM or something completely different from the BCM.
For example: usually the traction control problems and ABS are linked with the EBTCM, the low oil is usually the PCM. But all the modules are linked so who knows!
For example: usually the traction control problems and ABS are linked with the EBTCM, the low oil is usually the PCM. But all the modules are linked so who knows!
Jim
Burning Brakes
Joined: Mar 2005
Posts: 1,227
Likes: 15
St. Jude Donor '06
to pull codes, see my post here:
its down a couple of posts
http://forums.corvetteforum.com/show...ighlight=codes
its down a couple of posts
http://forums.corvetteforum.com/show...ighlight=codes
Last edited by Stealthy4; Aug 4, 2008 at 10:34 PM.
Burning Brakes
Joined: Mar 2005
Posts: 1,227
Likes: 15
St. Jude Donor '06
Could be a grounding issue too...that would explain multiple codes from multiple modules...grounds are hard to diagnose but cheap to fix...
Thread Starter
Heel & Toe
Joined: Aug 2008
Posts: 23
Likes: 0
to pull codes, see my post here:
its down a couple of posts
http://forums.corvetteforum.com/show...ighlight=codes
its down a couple of posts
http://forums.corvetteforum.com/show...ighlight=codes
Thanks! Sounds simple enough. I'll try to get them pulled tomorrow, then clear them and take for a ride, then check it again.
Thanks again,
Jim
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Thread Starter
Heel & Toe
Joined: Aug 2008
Posts: 23
Likes: 0
I've seen loose grounds cause strange issues on cars with a lot less electronics than is car, so I would agree that something I should look at as well. Is there a manual available that gives the location of all chassis grounds? I'm sure there's a lot of grounds on this car.
Jim
Burning Brakes
Joined: Mar 2005
Posts: 1,227
Likes: 15
St. Jude Donor '06
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
Found by Bill Curlee, there is a known problem in the door-jam accordian tubes where there is a single wire that has a problem shorting out to the frame there. It will cause lots of warning messages to pop up. Another question too is, is there any water on the passenger floorboard area and if so, water get into the BCM?
Melting Slicks
Joined: Oct 2007
Posts: 2,724
Likes: 2
From: Holland Landing Ontario
Does to me.
I had mine go bad last year with similar symtems. It was caused by the drain tube in the HVAC system being plugged and over flowing on to the BCM. Make sure you have water under your car after the air has been on.
Dave
I had mine go bad last year with similar symtems. It was caused by the drain tube in the HVAC system being plugged and over flowing on to the BCM. Make sure you have water under your car after the air has been on.
Dave
Burning Brakes
Joined: Mar 2005
Posts: 1,227
Likes: 15
St. Jude Donor '06
Found by Bill Curlee, there is a known problem in the door-jam accordian tubes where there is a single wire that has a problem shorting out to the frame there. It will cause lots of warning messages to pop up. Another question too is, is there any water on the passenger floorboard area and if so, water get into the BCM?
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
The driver's door accordian tube for sure although I think I read that it might happen in the passenger door as well. Check both and insure there are no wires there shorting to the frame. Search for Bill Curlee's post on this and you might consider sending him a PM. He's the electrical guru here.
Thread Starter
Heel & Toe
Joined: Aug 2008
Posts: 23
Likes: 0
Sorry for the delay. I check the codes and listed below is what I had before I cleared them.
28-TCS C1214H
60-IPC B0521H
AO-LDCM B2252H
B2208H
B2282H
B2284H
U1064H
A1-RDCM B2205H
B2283H
B2285H
U1064H
After I cleared them I drove 20 miles and the only warning I got was low oil level, which started displaying several weeks before all the other warnings. I checked the codes when I got back and I had "No Codes"
Thanks,
Jim
28-TCS C1214H
60-IPC B0521H
AO-LDCM B2252H
B2208H
B2282H
B2284H
U1064H
A1-RDCM B2205H
B2283H
B2285H
U1064H
After I cleared them I drove 20 miles and the only warning I got was low oil level, which started displaying several weeks before all the other warnings. I checked the codes when I got back and I had "No Codes"
Thanks,
Jim
Thread Starter
Heel & Toe
Joined: Aug 2008
Posts: 23
Likes: 0
Jim
Thread Starter
Heel & Toe
Joined: Aug 2008
Posts: 23
Likes: 0
Jim
Tech Contributor
Joined: Oct 1999
Posts: 41,037
Likes: 9,801
From: Charlotte, NC (formerly Endicott, NY)
If the C1214 code comes back after cleaning grounds G103 and G108, making sure the EBCM connector is clean and seated properly there is a high probability you need to replace/rebuild the EBCM module.
Bill
Bill
Burning Brakes
Joined: Mar 2005
Posts: 1,227
Likes: 15
St. Jude Donor '06
loose ground will definitely cause these issues. the TCS C1214. this is a bad code and usually means you need to replace the EBTCM...this may have already been done...you can use ABSFIXER.com
what im saying is...if it never comes back dont worry about it. if it does, know that the EBTCM is probably not working properly.
as for the BCM issues...i dont see anything that would point to this...
In fact, none of the codes are even from the BCM
what im saying is...if it never comes back dont worry about it. if it does, know that the EBTCM is probably not working properly.
as for the BCM issues...i dont see anything that would point to this...
In fact, none of the codes are even from the BCM