security light
Thread Starter
Melting Slicks
Joined: Jun 2010
Posts: 2,809
Likes: 3
From: Yorktown Virginia
security light
So for the second time the security light came on while I was driving tonight. I have not had any starting trouble and it goes off once I restart the car, it just has come on randomly while I'm driving.
So is this a symptom of a dirty ignition or what, everything I saw the light came on at start up and some were difficult to get started. I want to get this fixed before it starts giving me trouble.
So is this a symptom of a dirty ignition or what, everything I saw the light came on at start up and some were difficult to get started. I want to get this fixed before it starts giving me trouble.
Melting Slicks
Joined: Sep 2006
Posts: 2,736
Likes: 7
From: Redding CA
Melting Slicks
Joined: Mar 2004
Posts: 2,404
Likes: 408
From: Horseshoe Bend ID
So for the second time the security light came on while I was driving tonight. I have not had any starting trouble and it goes off once I restart the car, it just has come on randomly while I'm driving.
So is this a symptom of a dirty ignition or what, everything I saw the light came on at start up and some were difficult to get started. I want to get this fixed before it starts giving me trouble.
So is this a symptom of a dirty ignition or what, everything I saw the light came on at start up and some were difficult to get started. I want to get this fixed before it starts giving me trouble.
Thread Starter
Melting Slicks
Joined: Jun 2010
Posts: 2,809
Likes: 3
From: Yorktown Virginia
I am; I was just saying that there will most likely be some that dont apply because it had not been cleared before hand.
Here they are
A0-LDCM: B2282H, B2284H, B2262H, B2264H, U1064H
40 BCM: B2721H
A1-RDCM: B2283H, B2285H, B2265H, U1064H
Not sure why U1064H appears twice but it did.
Here they are
A0-LDCM: B2282H, B2284H, B2262H, B2264H, U1064H
40 BCM: B2721H
A1-RDCM: B2283H, B2285H, B2265H, U1064H
Not sure why U1064H appears twice but it did.
Thread Starter
Melting Slicks
Joined: Jun 2010
Posts: 2,809
Likes: 3
From: Yorktown Virginia
Its not something that comes up all the time, this is the second time in 2 or 3 months so if I were to change the key out I wouldn't see a difference.
I drive the car every day at least 30 miles and after I cut the car off last night and turned it back on it hasn't come back since.
I drive the car every day at least 30 miles and after I cut the car off last night and turned it back on it hasn't come back since.
Melting Slicks
Joined: Sep 2006
Posts: 2,736
Likes: 7
From: Redding CA
Its not something that comes up all the time, this is the second time in 2 or 3 months so if I were to change the key out I wouldn't see a difference.
I drive the car every day at least 30 miles and after I cut the car off last night and turned it back on it hasn't come back since.
I drive the car every day at least 30 miles and after I cut the car off last night and turned it back on it hasn't come back since.
First check for water or any type of corrosion around the BCM in the passenger side floor board next to the inside fuse box.
It could also be fixed by using another (spare) key.
It could also be the lock cylinder itself just wearing down over time.
The VATS pellet has to make really good almost perfect contact in order to allow the car to start. If your BCM is good and dry and there is no corrosion.
I'll bet over time you won't be able to start the car more frequently you'll be somewhat stranded until eventually the car just will not start or the key just won't even turn.
The fix for this is to replace the ignition lock cylinder and get a new key cut to match. It just wears over time from sliding the key in and out, weight on the key ring and turning back and forth.
If you decide to replace the lock cylinder, it's a good idea to take the ignition switch itself apart real quick and clean the contacts in there too.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Melting Slicks
Joined: Sep 2006
Posts: 2,736
Likes: 7
From: Redding CA
All of your other codes are door control module codes.
Do you windows/locks all work properly on both doors?
The U code appears twice because at some point someone probably had the door panels off of your car and disconnected them from the DCM's. This would cause the loss of comm code. Or it could be cause they have completely died but you would know cause your windows/locks wouldn't be working
Do you windows/locks all work properly on both doors?
The U code appears twice because at some point someone probably had the door panels off of your car and disconnected them from the DCM's. This would cause the loss of comm code. Or it could be cause they have completely died but you would know cause your windows/locks wouldn't be working
Thread Starter
Melting Slicks
Joined: Jun 2010
Posts: 2,809
Likes: 3
From: Yorktown Virginia
The B2721 code is more than likely causing the issue.
First check for water or any type of corrosion around the BCM in the passenger side floor board next to the inside fuse box.
It could also be fixed by using another (spare) key.
It could also be the lock cylinder itself just wearing down over time.
The VATS pellet has to make really good almost perfect contact in order to allow the car to start. If your BCM is good and dry and there is no corrosion.
I'll bet over time you won't be able to start the car more frequently you'll be somewhat stranded until eventually the car just will not start or the key just won't even turn.
The fix for this is to replace the ignition lock cylinder and get a new key cut to match. It just wears over time from sliding the key in and out, weight on the key ring and turning back and forth.
If you decide to replace the lock cylinder, it's a good idea to take the ignition switch itself apart real quick and clean the contacts in there too.
First check for water or any type of corrosion around the BCM in the passenger side floor board next to the inside fuse box.
It could also be fixed by using another (spare) key.
It could also be the lock cylinder itself just wearing down over time.
The VATS pellet has to make really good almost perfect contact in order to allow the car to start. If your BCM is good and dry and there is no corrosion.
I'll bet over time you won't be able to start the car more frequently you'll be somewhat stranded until eventually the car just will not start or the key just won't even turn.
The fix for this is to replace the ignition lock cylinder and get a new key cut to match. It just wears over time from sliding the key in and out, weight on the key ring and turning back and forth.
If you decide to replace the lock cylinder, it's a good idea to take the ignition switch itself apart real quick and clean the contacts in there too.
I have not had a problem with the car starting.
Thread Starter
Melting Slicks
Joined: Jun 2010
Posts: 2,809
Likes: 3
From: Yorktown Virginia
All of your other codes are door control module codes.
Do you windows/locks all work properly on both doors?
The U code appears twice because at some point someone probably had the door panels off of your car and disconnected them from the DCM's. This would cause the loss of comm code. Or it could be cause they have completely died but you would know cause your windows/locks wouldn't be working
Do you windows/locks all work properly on both doors?
The U code appears twice because at some point someone probably had the door panels off of your car and disconnected them from the DCM's. This would cause the loss of comm code. Or it could be cause they have completely died but you would know cause your windows/locks wouldn't be working
The only other lights I have gotten on my dash are from me forgetting to plug back in the maf sensor after detailing it so I figured they were from that.
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
I'm with 00Corvette on this oneI've heard of quite a few issues like this over the years. Wear on the cylinder allows the key to move losing contact with the VATs pellet and bringing on the security light. The car will continue to run for that ignition cycle and when you reinsert the key it makes normal contact.
Cleaning the VATs pellet can't do any harm. make sure you're not carrying a bunch of heavy stuff on your key fob. That can cause the key to shift in the barrel and lose contact.
If it gets really bad, Bill Curlee posted a great How To replace/refurbish the ignition cylinder.
Thread Starter
Melting Slicks
Joined: Jun 2010
Posts: 2,809
Likes: 3
From: Yorktown Virginia
I'm with 00Corvette on this oneI've heard of quite a few issues like this over the years. Wear on the cylinder allows the key to move losing contact with the VATs pellet and bringing on the security light. The car will continue to run for that ignition cycle and when you reinsert the key it makes normal contact.
Cleaning the VATs pellet can't do any harm. make sure you're not carrying a bunch of heavy stuff on your key fob. That can cause the key to shift in the barrel and lose contact.
If it gets really bad, Bill Curlee posted a great How To replace/refurbish the ignition cylinder.
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Thats a shame. It may be worth PM to Bill Curlee. He's stripped down the barrel. It might be cheaper and easier than a whole new part.
Thread Starter
Melting Slicks
Joined: Jun 2010
Posts: 2,809
Likes: 3
From: Yorktown Virginia
Well it turns out two wires were cut on the camaro causing the security light to be on. But I suppose I should look into rebuilding it on the vette before it gets any worse and I have to replace it. If I were to get a new one would I be able to get it keyed to the keys on the car now or would I have to get the car re-keyed?
Melting Slicks
Joined: Sep 2006
Posts: 2,736
Likes: 7
From: Redding CA
Well it turns out two wires were cut on the camaro causing the security light to be on. But I suppose I should look into rebuilding it on the vette before it gets any worse and I have to replace it. If I were to get a new one would I be able to get it keyed to the keys on the car now or would I have to get the car re-keyed?
It's still tough even with the VIN to get a new key to work in the old door/console etc..lock cylinders.
This isn't a re-buildable part either...you can clean out the contacts on the ignition switch while you have it apart in 10 minutes though.
Thread Starter
Melting Slicks
Joined: Jun 2010
Posts: 2,809
Likes: 3
From: Yorktown Virginia
You would take the new lock cylinder into the locksmith/dealer and have a new key cut to that lock cylinder and your VIN if you want to try and attempt to still have 1 key for the door(s)/ignition/glove box/console.
It's still tough even with the VIN to get a new key to work in the old door/console etc..lock cylinders.
This isn't a re-buildable part either...you can clean out the contacts on the ignition switch while you have it apart in 10 minutes though.
It's still tough even with the VIN to get a new key to work in the old door/console etc..lock cylinders.
This isn't a re-buildable part either...you can clean out the contacts on the ignition switch while you have it apart in 10 minutes though.
