Security light problem
Thread Starter
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From: Big Red Ne
Security light problem
I posted this in the C5 General section. My 99 FRC has occasionally had the security light come on and stay on while driving. Also, and I don't know if it is related, the car will not start even though the lights and all electrical equipment seems to be working. Are these two problems related? Any suggestions on remedies?
Tech Contributor
Joined: Jan 2007
Posts: 19,410
Likes: 1,144
From: Dyer, IN
I posted this in the C5 General section. My 99 FRC has occasionally had the security light come on and stay on while driving. Also, and I don't know if it is related, the car will not start even though the lights and all electrical equipment seems to be working. Are these two problems related? Any suggestions on remedies?
http://www.c5forum.com/ayc/dtcdic.php
Also, there are at least two other threads with similar symptoms in the tech section right now.
Thread Starter
Team Owner
Joined: Mar 2004
Posts: 30,055
Likes: 351
From: Big Red Ne
Yes, most likely related. Post your codes:
http://www.c5forum.com/ayc/dtcdic.php
Also, there are at least two other threads with similar symptoms in the tech section right now.
http://www.c5forum.com/ayc/dtcdic.php
Also, there are at least two other threads with similar symptoms in the tech section right now.
Thread Starter
Team Owner
Joined: Mar 2004
Posts: 30,055
Likes: 351
From: Big Red Ne
Yes, most likely related. Post your codes:
http://www.c5forum.com/ayc/dtcdic.php
Also, there are at least two other threads with similar symptoms in the tech section right now.
http://www.c5forum.com/ayc/dtcdic.php
Also, there are at least two other threads with similar symptoms in the tech section right now.
Thread Starter
Team Owner
Joined: Mar 2004
Posts: 30,055
Likes: 351
From: Big Red Ne
Yes, most likely related. Post your codes:
http://www.c5forum.com/ayc/dtcdic.php
Also, there are at least two other threads with similar symptoms in the tech section right now.
http://www.c5forum.com/ayc/dtcdic.php
Also, there are at least two other threads with similar symptoms in the tech section right now.
10-PCM (Power Train Control Module)
DTC P1631 Theft Deterrent Start Enable Signal Not Correct
60 BCM (Body Control Module)
DTC B2592 Column Lock/Unlock Drive B
DTC B2721 PASS-Key Detection Circuit
BO-RFA (Remote Function Actuation)
DTC U1096 Loss of Communications with IPC
DTC U1016 Loss of Communications with PCM
DTC U1064 Loss of Communications with BCM
Last edited by rkhegler; Sep 13, 2010 at 01:07 PM.
Tech Contributor
Joined: Jan 2007
Posts: 19,410
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From: Dyer, IN
Here are the codes. All designated with an "H"
DTC P1631 Theft Deterrent Start Enable Signal Not Correct
DTC B2592 Column Lock/Unlock Drive B
DTC B2721 PASS-Key Detection Circuit
DTC U1096 Loss of Communications with IPC
DTC U1016 Loss of Communications with PCM
DTC U1064 Loss of Communications with BCM
DTC P1631 Theft Deterrent Start Enable Signal Not Correct
DTC B2592 Column Lock/Unlock Drive B
DTC B2721 PASS-Key Detection Circuit
DTC U1096 Loss of Communications with IPC
DTC U1016 Loss of Communications with PCM
DTC U1064 Loss of Communications with BCM
Yep.....that will do it. If you have another key, you can try that first, but you are probably looking at a new lock cylinder. Based on the communications codes, I think an inspection of the ignition switch contacts are in order as well.
Thread Starter
Team Owner
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From: Big Red Ne
So, what do you estimate this will cost at a shop?
Thread Starter
Team Owner
Joined: Mar 2004
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From: Big Red Ne
I took both of my keys to the Chevy dealer and they tested the code on the key to see if they were reading correctly. They were! The electrical service guy in the shop told me to try the key in the ignition and put it in the "run" position. He then said to try and remove the key. If the key comes out, I would need a new cylinder lock. If not, I would probably have a problem with the ignition switch. The technician also told me that the key I was using looked a bit worn on the chip. He recommended trying a new key or using my spare. I will start using the spare for a while to see if that helps.
I tried both keys and they did not come out of the cylinder. So, I think my next step is to take out the ignition switch and take a look at the contacts. From what I have read, I am betting the contacts need a good cleaning or the switch itself needs to be replaced.
I tried both keys and they did not come out of the cylinder. So, I think my next step is to take out the ignition switch and take a look at the contacts. From what I have read, I am betting the contacts need a good cleaning or the switch itself needs to be replaced.
Last edited by rkhegler; Sep 14, 2010 at 03:50 PM.
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Tech Contributor
Joined: Jan 2007
Posts: 19,410
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From: Dyer, IN
I took both of my keys to the Chevy dealer and they tested the code on the key to see if they were reading correctly. They were! The electrical service guy in the shop told me to try the key in the ignition and put it in the "run" position. He then said to try and remove the key. If the key comes out, I would need a new cylinder lock. If not, I would probably have a problem with the ignition switch. The technician also tole me that the key I was using looked a bit worn on the chip. He recommended trying a new key or using my spare. I will start using the spare for a while to see if that helps.
I tried both keys and they did not come out of the cylinder. So, I think my next step is to take out the ignition switch and take a look at the contacts. From what I have read, I am betting the contacts need a good cleaning or the switch itself needs to be replaced.
I tried both keys and they did not come out of the cylinder. So, I think my next step is to take out the ignition switch and take a look at the contacts. From what I have read, I am betting the contacts need a good cleaning or the switch itself needs to be replaced.
Thread Starter
Team Owner
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From: Big Red Ne
I understand that. However, rather than just assuming the solution to the problem, one should start small and work your way to the problem. I simply did what the tech told me to do.
Tech Contributor
Joined: Jan 2007
Posts: 19,410
Likes: 1,144
From: Dyer, IN
I see. I'm not very good at troubleshooting these electrical gremblins......I'm sure more knowledgeable members will offer advice.
Melting Slicks
Joined: Sep 2006
Posts: 2,736
Likes: 7
From: Redding CA
did you check the codes like he asked? that would help us to not have to ASSUME.
forget the stupid "tech"...it's the same guy that will tell you that you have to swap your entire torque tube assembly when the bushings/bearings are a couple hundred bucks
Melting Slicks
Joined: Sep 2006
Posts: 2,736
Likes: 7
From: Redding CA
LOL, i read the whole thread but I just missed that entire post or read through too quickly more than likely.
now that that's clear...
to the op: what do you mean "assume"?
your codes are there and they give you more than an assumption
edit: if your key DOES NOT come out of the ignition..it DOES NOT mean that your lock cylinder is okay. That B 2721 code is telling you the problem...in order to change the lock cylinder you have to remove the ignition switch...once the switch is out it's easy to clean the contacts and free.
It shouldn't cost more than 30-40 bucks to have your new lock cylinder keyed if decide to change out the lock cylinder.
A shop will probably charge you 400ish to do the job
now that that's clear...
to the op: what do you mean "assume"?
your codes are there and they give you more than an assumption
edit: if your key DOES NOT come out of the ignition..it DOES NOT mean that your lock cylinder is okay. That B 2721 code is telling you the problem...in order to change the lock cylinder you have to remove the ignition switch...once the switch is out it's easy to clean the contacts and free.
It shouldn't cost more than 30-40 bucks to have your new lock cylinder keyed if decide to change out the lock cylinder.
A shop will probably charge you 400ish to do the job
Last edited by 00Corvette; Sep 15, 2010 at 05:12 PM.
Thread Starter
Team Owner
Joined: Mar 2004
Posts: 30,055
Likes: 351
From: Big Red Ne
LOL, i read the whole thread but I just missed that entire post or read through too quickly more than likely.
now that that's clear...
to the op: what do you mean "assume"?
your codes are there and they give you more than an assumption
edit: if your key DOES NOT come out of the ignition..it DOES NOT mean that your lock cylinder is okay. That B 2721 code is telling you the problem...in order to change the lock cylinder you have to remove the ignition switch...once the switch is out it's easy to clean the contacts and free.
It shouldn't cost more than 30-40 bucks to have your new lock cylinder keyed if decide to change out the lock cylinder.
A shop will probably charge you 400ish to do the job
now that that's clear...
to the op: what do you mean "assume"?
your codes are there and they give you more than an assumption
edit: if your key DOES NOT come out of the ignition..it DOES NOT mean that your lock cylinder is okay. That B 2721 code is telling you the problem...in order to change the lock cylinder you have to remove the ignition switch...once the switch is out it's easy to clean the contacts and free.
It shouldn't cost more than 30-40 bucks to have your new lock cylinder keyed if decide to change out the lock cylinder.
A shop will probably charge you 400ish to do the job
