Does anyone know how to bypass security system on 98 aurora

This is a very common problem on GM vehicles. The security system is known to fail. Basically when you insert your key, the system checks for certain OHMS resistance. If the system cannot get the correct signal from the key, it assumes the key is incorrect and goes into SECURITY lockout mode. (prevents hotwiring) This has been happening with GM;s for a very long time. There are ways to bypass this now. Read through this page for info, solutions as well.

http://www.diy-gm-security.com/

The security light blinking is the problem, you must get control module scanned for fault codes to diagnose the issue or you can bypass the system if you understand basic electrical systems . Just google bypass passkey system.

Starts everytime and shuts right down? Usually an indication of the security system. I had to bypass a 98 Malibu because of this. A lot of those era Chevys had problems. Check the videos on it. I don't know exactly what one your car has. 2005 impala security bypass YouTube

The key under the dash may be bypassing the security system. And that trick may not be working anymore.
You would need to check the starter to see if you have power from the key switch in the start position. The neutral safety switch may have failed, or the security system may be preventing the engine from cranking.

go to page 316. http://www.manualowl.com/am/Oldsmobile/1998-Aurora/Manual/984

There are two ways that i know of to bypass this system. Both are on this link along with info, pics, and other useful info. You CAN fix this yourself.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

First off, sorry that happened. That key can run anywhere from 75 to 150 bucks. There are ways to bypass this system so that you can use any key. Its probably good to just bypass it anyway so that it doesnt end up failing on you down the road. These system are expensive and out dated. Here is a link to understand how the system works and ways to bypass this yourself.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

Everything you need to know to bypass the security system is on this link. http://vatspasslockpasskeysecurityhelp.yolasite.com/

For the radio Im pretty sure you just need to call your dealer or go see them, they will take your VIN and give you a code to keep your after market stereo from kicking the theft lock.

The security light unfortunatly is a very common, and as it is just annoying right now, potentially big problem. The model Pass Key system in th 01 Olds Aurora tends to be defective in most of these cars. If the Security light, or DIC is flashing Theft fault system, you need to see your dealer. Chances are your secureity system is about to have some "Lock out" Malfunctions. These are no fun. Its when the Pass Key system detects a suspicious or uncorrect key trying to start car or someone is trying to enter car abnormally. Its actaully a very good feature when opperating properly. It usally lock the system for 3-10 minutes and the system resets and with the correct key you can start the car. The problem is that the little chips in the keys go bad causing the "lock out" to happen even when usuing the correct key. Anouther, less used key can work better, and if you start expieriencing lock outs, waiting to the system to reset usally works, but eventually those mthods will fail to and you will have to have it repaired. This system can also cause the "lock out" to occur while driving down the road.

Id get it checked and fixed before the neusance light become a real problem.

You can also consider a Bypass system that with completly go around the smart key system. They are inexpensive and effective and preventing issues with the Pass Lock. However you will not have the security settings from the Immobalizer (lock out) so it would be a easier target for joy riders. You will still have the theft deterant ability, that alarms if someone tried gaining entry to the car with out keys or proper entry methods.

Bypass systems are not full proof either and do wear out over time. I think they have far less issues than the securtity feature in the car and if the bypass fails and Lock Out occurs, simply get a new Bypass. Hope I helped a bit take care :-)

Found this on ebay.

http://cgi.ebay.com/ebaymotors/1997-OLDSMOBILE-AURORA-OWNERS-OWNERS-MANUAL-BOOK-97_W0QQcmdZViewItemQQcategoryZ34230QQihZ010QQitemZ200306482015QQrdZ1QQsspagenameZWDVW