Question about 1999 Oldsmobile Bravada

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My bravada 98 security light on and wont start

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Has your battery died before this happened ? or the radio taken out

Posted on Jan 03, 2011

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The problem might be your Vats security system. This causes the car to either "not start" or "shut down" while running, or start for 5 seconds and then die. (depending on the system) If the security light flashes, i guarantee that this is what the problem is. 1st trick, (if not starting) turn the key forward 2 clicks till right before it would normally start, leave like that for 10 minutes. ( no less ) After 10 minutes, turn key back then forward and your car might start. I did this in my regal for more than a year.

Cheap fix: Bypass the chip in your key. Temporary, but effective.
----- http://vats.likeabigdog.com/


Never worry again fix: Bypass the whole VATS/Passlock/passkey I or passkey II system entirely. Literally take it out, and throw it away. I just did this in my Regal. Took about an hour. Took longer to find the thing than it did to fix the problem. For a list of cars effected by this problem. See the NEWROCKIES link on the right side of their page.........
----- http://newrockies.ca?ap_id=judd0081
----- With this fix, you can take that whole Vats, passlock, passkey **** system out of your car all together. Good info on both sites

Posted on Jan 19, 2011

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Posted on Jan 02, 2017

saailer
  • 1868 Answers

SOURCE: 98 s10 cranks but wont start. Checked for spark and fuel press,

Yes It does. There are (or should be) toggle switches to reset security alarm. However, the ignition hot lead passes through the security relay contacts. This relay may be the culprit, in that if it does not pull when ignition key is turned; The start relay will not pull disabling fuel pump and spark.


FixYaWIZ...............saailer

Posted on Dec 10, 2009

tayjoejoe
  • 2182 Answers

SOURCE: 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.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

Posted on Nov 20, 2011

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1 Answer

I have a 99 olds Bravada. I replaced fuel filter Saturday. Still wouldn't let it start. Left it overnight. Yesterday it started right up n no issues all day. This morning it wont start again. Ideas


This may be related to the antitheft system The system is known for turning off the starter and/or injectors when it fails. Is there a light on the dash that says SECURITY? This is a common problem worth looking into. http://www.diy-gm-security.com/

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Jun 22, 2015 | Cars & Trucks

1 Answer

The auto locked-up . It wont start the key is locked in ignition gears wont change what to do?


Is the security light on?? if so go to this site.. I seen your car is on the list for this issue! Hope it helps you!

Jul 23, 2014 | 1998 Oldsmobile Bravada

1 Answer

What is the easiest way to bypass the security light on my 98 bravada


The security light is a visual indication that something in the car's antitheft system is failing. In most GM cars and trucks there is a hidden system that most people are unaware even exists. From the moment you put your key in the ignition, there begins a constant line of communication between your key's security chip or transponder, to the ignition's lock cylinder, and then to the car's TDM (Theft Deterrent Module). These 3 parts are in CONSTANT communication. If the key is in the ignition, then these parts are sending signals to each other. The security light illuminates when that signal gets broken, even just for a second. When the signal breaks, the car misinterperates this as an attempt at theft and goes into antitheft mode. The car thinks its being stolen or hotwired because it is not getting that signal from YOUR specific key. This is why the security light turns on and shuts down your vehicle. Remember too, the TDM controls the security light. Sometimes you can have ALL the symptoms and no lights.
This link may help you.
http://vatspasslockpasskeysecurityhelp.yolasite.com/

Sep 15, 2012 | 1998 Oldsmobile Bravada

1 Answer

Bravada wont stay crunk


This may be a failure in the antitheft system. When the system can't read the key properly, it turns off the injectors. Normally followed by a light on the dash that says ANTITHEFT or SECURITY. This link explains.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

May 18, 2012 | 1998 Oldsmobile Bravada

1 Answer

Wont start intermittently


First thing I check for on a GM when it won't start, is the antitheft system. GM is notorious for these things failing. A dead give away is a light on the dash that says SECURITY or ANTITHEFT. If you see this light, go to this link.
http://vatspasslockpasskeysecurityhelp.yolasite.com/
If no security light, the problem is gunna be in the ignition, the starter, or the neutral safety switch. You can always jump the terminals on the starter (key turned 2 clicks forward), if it turns over at the starter, the problem is in the ignition, or neutral switch.

Mar 07, 2012 | 2001 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.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

Nov 17, 2011 | 1998 Oldsmobile Bravada

1 Answer

Service AWd light is on on my 98 olds bravada


i got a 98 bravada and my AWD light was on, what i did to fix it was replace the transfer case motor and thats all, i did a bunch of research and found out that the transfer case motor is the main conponent with of your AWD it tells the transfer case when to give the front wheels power. try replacing that

Mar 16, 2009 | 2000 Oldsmobile Bravada

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