Question about 1999 Pontiac Bonneville

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Security light comes on at random, car cuts off at random

OMG! I have the same problem. My security light comes on at random and I have to wait the 3 minutes before the car will crank. In addition, my car just cuts off in the middle of me driving, gauges are not out of whack or anything, car just cuts off. It will eventually crank back up but it has begun to take longer and longer to get it to crank.

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Cataylic converter needs replaced,,,replace oxygen sensors and crankshaft sensors,,,,check plugs and coil,,,,,converter backs uptoo much heat back to motor and sensors,,,

Posted on Aug 22, 2009

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Posted on Jan 02, 2017

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1 Answer

Red warning light dash


Hi, Seems that the SKIM (Security Key Immobilizer Module). Try locking and unlocking drivers door, sounds like security system was triggered. If unlocking and locking door does nothing locate (ECU) fuse, (Main) fuse, and (IOD) fuse. If so pull fuses turn key to on position do not start, wait 3 to 5 minutes install fuses and try starting. Please also check battery connections for clean and secure.

Feb 21, 2018 | 2001 Chrysler Town & Country

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Why would my jimmy cut off sometimes while driveing and than run fine after sitting for a few minutes


im not sure but my jimmy will run great then i go to the store and come back out it wont start i wait 15 min and it starts right up , my problem was security sensor , see if the security light comes on when it happens if it does i would look into that

Jan 04, 2013 | 1998 GMC Jimmy

1 Answer

Why does the security light come on when I start my car?


The security light should always illuminate for 2-3 seconds and then turn off when you initially start your vehicle. It does this just as a self test kind if thing. If the light is randomly turning on and off while driving, this is a different problem and will eventually leave you and your car stranded somewhere unable to start the vehicle. This link will help with that problem. http://vatspasslockpasskeysecurityhelp.yolasite.com/

Oct 26, 2011 | 1995 Chevrolet Lumina

1 Answer

Jut replaced the fuel pump. Security light keeps


It starts with the security light and then gets worse till the car won't start anymore. The security system (VATS/Passkey) installed on these GM cars is anti-owner more than an anti-theft. There are 3 parts involved: 1) The chip-key 2) The lock cylinder 3) The TDM (aka the brain of the system) if any of these parts fails or is even slightly malfunctioning, the car stays stuck where you are and you only get a dealer asking you about 1,000$ to fix it. And all the 3 parts have a quite short lifespan. Way too many people got in this situation (including myself). I don't recommend any partial solution or any used parts as it would happen again way too soon to be acceptable and if it happens 100 miles from home (like it happened to me....) it's a big burden. I finally made it to save my beloved 94 Park Avenue (with the same system that is installed in your car) with a solution that I found on the internet and that bypasses the entire factory security system, all 3 pieces altogether and you can even remove the TDM at the end and use 99c keys without chip. The product I used is at http://newrockies.com and is still working perfectly after 5 years. Don't go to the dealer!

Jul 13, 2010 | 1999 Oldsmobile Aurora

1 Answer

1999 GMC Suburban K1500 4x4 randomly will not start 3 times this week.I just had the egr valve replaced, fuel filter, rotor and cap. 5months ago had an automatic starter put on and once in a while the...


randomly will not start 3 times?????? Won't start how ? When you turn the key to start ,nothing happens or the starter engages an spins the engine but won't start an run ?

Jan 17, 2018 | 1999 GMC Suburban

1 Answer

Security problem


Make sure you are turning the ignition to the on position. Most cars will flash the security light until it is reset. Then the car should start.

Mar 11, 2010 | Cadillac DeVille Cars & Trucks

1 Answer

Security light comes on and car doesn.t start


try another key. if this doesnt work the wire in the tumbler assembly most likely broke and you will need it replaced. ( Ignition Switch)

Jul 18, 2009 | 1999 Oldsmobile Aurora

1 Answer

Car doesn't start randomly. "security" light comes on and off. Have to leave key in "on" position for 10 min. to reprogram. Is there a fix?


you may have the same problem I ran into and have to turn your key on don't start the car yet wait about ten seconds with key on on position then turn it over should stop the security lite from coming on all the time and locking the fuel lines. let me know if this worked
A mechanic told me maybe if I replace the ignition that may be it setting off the security sensors? I don;t know I just wait ten seconds with the key on before I start it and as long as I do that it seems to work every time.

Jul 18, 2008 | 2002 Oldsmobile Alero

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