Has anyone replaced the Ignition cylinder themselves?
If so, did your SECURITY light come on and stay on once you were completed?
How did you fix this, reprogram, and how?

I have a '02 that passlock had been intermittently not allowing the car to star for about 3 years and I'm done!
I do not have programmable keys (no marks on the keys)
I replaced the ignition cylinder, had the new one re-keyed for my old keys, car starts fine but the security light in on steady continuously.
seems very easy to fix but I'm missing something any help is greatly appreciated

-Rick

 

try leaving the key turned on for 10minutes, or a bit more, hopefully at the 10minute mark the security light goes out, and stays out. i know thats how ya do it on N bodies anyway.... hopefully it works the same on a W body hmmm...this might also be for the PK3, passkey3 system, well its worth a try atleast.

 

Tried for 15 minutes with no change[&:]

 

I think I finally broke the PASSLOCK Curse

I will be re-assembling my interior tomorrow and taking picture to post a good how-to

The dealer out here wanted 1000.00 to fix the "random failure to start issues".

It cost me an over-priced part 250.00 from the dealer (found it later on-line for 150.00)
40.00 to have a locksmith code it for me to use my original keys
So far about 1 hours to disassemble and remove the old ignition cylinder.
and about 45 minutes to allow the BCM to relearn the new passlock code.

Like a stated earlier I will post more info and picture once everything to back together but I know many others have had this problem and I think for very little time and about a forth of the dealer price I have figured out how to concure this pesky problem.

-Rick

 

I am going to change mine this weekend,any hints will be greatly
appreciated.I was told to turn ignition to on for 10 minutes back
to off and repeat 2 times before cranking is this what you did?

 

I have the DEI Passlock 2 and I beleive this is who pretty much everyone uses for their alarms.

My intermittant problem was simply the wiring harness to the DEI box being loose. I reseeded it twice and never really gave it thought but the Security light popped up. I started ripping apart the interior andI just happend to look over at it and I sawa clip was out. My wiggling might have helped, but getting that clip secure fixed the whole problem.

 

$1000.00 to diagnose and repair an intermittent Passlock related no start? HOLY CRAP!! I am a Chevrolet dealer technician and I'm going to call those guys thieves. Last time I repaired one of these the GM list on the part was $192.00 (too much in my opinion) and 1 hour labor ($90.00 here). Most Passlock no starts are very intermittent,but if there is not a poorly installed remote start system causing the problemall you need to do is verify the integrity of the 3 Passlock circuits & their connections at the lock cylinder housing and the BCM. If that stuff looks good a Passlock sensor fixes them everytime.

 

showArrow("2/22/2008 10:06:10 AM",79336,211,false)
Thieves they are, but it's fixed!

Maybe a total of 2 hours labor on my part

the following post is the play by play locakted in the do-it-yourself area

"Ignition Cylinder Replace (Passlock fix)"