99’ Vert BCM malfunctioning
Thread Starter
Heel & Toe
Joined: Apr 2021
Posts: 23
Likes: 1
From: florida
99’ Vert BCM malfunctioning
Hey guys, I recently took apart my interior due to leaking seals causing some mold on the carpets(I hate convertibles now), and once I had everything back together, now whenever I start the car I get pretty much every error code. active handling error, reduced engine power, security, basically ever light. It starts after about a minute of running the car and all the gauges go flat.
when I ran codes every modules had errors and they all pointed to bcm.
I tried resetting the back by cycling the ignition and a pulled a few fuses, unplugged the battery and still nothing. I’m assuming the bcm somehow got water damage or maybe a ground or something but it works fine until it doesn’t. I cleaned the keys and ignition by spraying electronic cleaner and let it dry and still nothing.
not sure if it matter but I have aftermarket seats and c6 z06 shocks to replace the electronic ones and both of those things have been thoroughly tricked by fake sensors so I don’t think it’s that.
My bcm is part # 09367609 but I can’t find and replacements under $1000 for this specific one. In all honestly I’m getting ready to sell my vette because I need a truck for my profession so I can’t really spare the money ti go down some huge rabbit hole trying to fix it. If anyone knows a different part number that is still compatible or has one for sale that’s cheap please let me know.
Any advice welcomed!
when I ran codes every modules had errors and they all pointed to bcm.
I tried resetting the back by cycling the ignition and a pulled a few fuses, unplugged the battery and still nothing. I’m assuming the bcm somehow got water damage or maybe a ground or something but it works fine until it doesn’t. I cleaned the keys and ignition by spraying electronic cleaner and let it dry and still nothing.
not sure if it matter but I have aftermarket seats and c6 z06 shocks to replace the electronic ones and both of those things have been thoroughly tricked by fake sensors so I don’t think it’s that.
My bcm is part # 09367609 but I can’t find and replacements under $1000 for this specific one. In all honestly I’m getting ready to sell my vette because I need a truck for my profession so I can’t really spare the money ti go down some huge rabbit hole trying to fix it. If anyone knows a different part number that is still compatible or has one for sale that’s cheap please let me know.
Any advice welcomed!
Drifting
Joined: Dec 2016
Posts: 1,390
Likes: 221
I'm chasing some BCM/sensor issues myself -
1. Battery fully charged? I had some errors pop up at 11.8V that went away at 12.5V.
2. Can you get to your BCM and take a look inside? Its a clamshell package that pops open. You will probably see if it took water damage or not.
3. Star connectors - two star connectors near the BCM (long slim white connector). You can pop the shorting bar off both and jump just the BCM to PCM and see if the car starts and stays running. If it does, its supposedly not the BCM or PCM.
1. Battery fully charged? I had some errors pop up at 11.8V that went away at 12.5V.
2. Can you get to your BCM and take a look inside? Its a clamshell package that pops open. You will probably see if it took water damage or not.
3. Star connectors - two star connectors near the BCM (long slim white connector). You can pop the shorting bar off both and jump just the BCM to PCM and see if the car starts and stays running. If it does, its supposedly not the BCM or PCM.
Melting Slicks
Joined: Sep 2008
Posts: 3,139
Likes: 802
From: Espanola New Mexico
To the OP, there are several businesses that specialize in repairs to automotive electronics modules like the BCM, simply contact them and send them your BCM. It's far cheaper to repair then to buy a new one.
