Question about 2002 Oldsmobile Bravada

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Is there a security system that doesnt allow you to start the oldsmobile brevada if it doesnt recognise the driver.

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Yes, it works off of the key tho. Your key has either a chip in the shaft or a transponder in the plastic head that sends signal to the ignition/lock cylinder. The ignition then sends a signal to the TDM (theft deterrent module) also known as the "computer". The TDM then allows your starter to start. If there is a break anywhere in this system, the vehicle goes into security mode and shuts down the starter or injectors. The hard part is finding which area is causing the problem. Mechanics can change every part before "fixing" the problem. Ive had the best luck with just bypassing the entire system. Here is a link that explains the problem and a PERMINANT solution that you can do yourself.

Oldsmobile Bravada
1998 1999 2000 2001 2002 2003 2004

Posted on May 27, 2011

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What do I do if I break my key and now it turns the vehicle over but won't start and the security light is on now

You have a fob with the key?
If the key is broken it won't be recognised by the security system. As such the immobiliser won't disable itself to allow you to start the vehicle, because your key isn't being recognised.

You need another key. You either have to go to the dealer or to an autoshop that can cut and program the key for you

Feb 25, 2016 | Cars & Trucks

1 Answer

Security system not letting van start

Security systems/immobilisers are a nightmare.
Usually it's because the key is not being recognised by the system.

Simple as it may sound, press the 'unlock' button twice - particularly when the key is in the ignition barrel.

Try replacing the battery in the key fob - the remote. Do the simple things first.

Put the key in the ignition. Turn it on/off 5-6 times (no need to try and start the engine..). On the final time leave the ignition switched on for 5 minutes. Hopefully, the system will 'recognise' the key and then allow you to start it.

Failing that, it sounds like a job for a auto electrician

Jan 21, 2016 | Cars & Trucks

1 Answer

Where is the voltage regulator on a 2000 oldso Brevada

It is integrated into the alternator, if it is bad you will need to replace the alternator.

Dec 22, 2014 | 2000 Oldsmobile Bravada

1 Answer

1998 oldsmobile bravada security light flashing car wont start

This happens due to a failed or failing antitheft system. When the system cant communicate properly, it will disable your starter or injectors and show the SECURITY light. Go to this link for info and ways to beat this system yourself.

Nov 17, 2011 | 1998 Oldsmobile Bravada

1 Answer

Programing a key fob

1. Perform a security system relearn.
2. Let the vehicle sit for more than 10 minutes with the key off.
3. Attempt to start the engine, leave the key in the run position monitoring the security system indicator.
4. After 10 minutes, the security indicator will change state.
5. Turn the key off and wait 10 seconds.
6. Attempt to start the engine. If the engine stalls, wait another 10 minutes with the key on.
7. After the second 10 minute timer has expired, turn the key off for 10 seconds.
8. Attempt to start the engine. If the engine stalls, wait another 10 minutes with the key on.
9. After the 3rd 10 minute timer has expired, shut the key off for 10 seconds.
10. The security system will relearn on the 4th starting attempt and the engine should start and run.
If this doesnt work, you may have a failure in your system. If the security light is on, and the reprogram doesnt work, you might want to look into bypassing that antitheft system.


Aug 06, 2011 | Oldsmobile Alero Cars & Trucks

1 Answer


you should have a remote or try locking and unlocking the drivers door with the key. if this doesnt work then try the pass/side door lock, lock and unlock that door.hope this helps.

Sep 16, 2010 | 1997 Oldsmobile 88

1 Answer

High beam on 02olds brevada

After checking fuse, buy a test light from local auto/hardware store. Disconnect highbeam (with highbeam and headlights on, and dont worry you can not get electricuted from it) wire put pointy end end of wire or in wire plug or harness and other end on a ground eg. - terminal on battery or any clean unpainted surface of car or engine. the light should come on, if not problem in high beam swith or power to the switch, use test light to see if power comin out of switch & goin in to switch.

Nov 18, 2009 | 2002 Oldsmobile Bravada

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