Question about 2002 GMC Sierra

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How do I turn off the flashing security light in my 2002 Sierra Denali?

Tried putting key in ignition turned to run position watched it flash for 10 mins it didn't go off.

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Dont know if this could help or not but...my jeep grand cherokee security sys i thought was possessed! would not respond and just before i threw a brick thru it lol a guy asked for my keys and proceeded to unlock the hatch..it stopped..then he told me to open my door before he closed the back. Now every time I unlock the hatch first then open the drivers door.who knows- It wont cost you to try. Good luck

Posted on Dec 10, 2014

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Posted on Jan 02, 2017

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I called myself programming the new keys for my pt cruiser, but,it didnt take. At first it would start and run for a few seconds, now it wont turn over.what did I do wrong and how can I fix this?


Takes the master key to get it started again. The security gives you 3 tries to get the vehicle started, after the third time, it kills the starter.
2002 Chrysler PT Cruiser Note: You must have two valid keys to add a new key to the system.
1. Insert the first valid key into the ignition switch. Turn the ignition switch to the
ON/RUN position for at least three seconds, but no longer than 15 seconds.
Then, Turn the ignition switch to the LOCK position and remove the first key.
2. Insert the second valid key into the ignition switch. Turn the ignition switch to
the ON/RUN position within 15 seconds. After 10 seconds, a chime will sound.
In addition, the Vehicle Security Light will begin to flash. Turn the ignition switch
to the LOCK position and remove the second key.
3. Insert the new key into the ignition switch. Turn the ignition switch to the
ON/RUN position.within 60 seconds. After 10 seconds, a single chime will
sound. In addition, the Vehicle Security Light will stop flashing. To indicate that
programming is complete, the Vehicle Security Light will turn on again for
seconds and then turn off.
The new key is now programmed. The Remote Keyless Entry transmitter will
also be programmed during this procedure.
Repeat this procedure to program up to eight keys.

Oct 09, 2016 | Cars & Trucks

1 Answer

Will not start but turns over


Check if security light is on, if so, must reset. To reset, put key in ignition and turn to on position. Security light will start flashing on and off. Leave key in on position until security light stops flashing and turns off completely. This will take approximately 10 minutes. Then turn key off and take out of ignition. Put key back in and start car. Should now start

Jun 29, 2014 | 2000 Saturn SL

1 Answer

Ignition on and nothing happens, checked battery and is charged checked all fuses and breakers and all are ok, got underneath car and shorted across the starter solenoid end the engine would turn over but...


You may have a security system problem (Most likely caused by an ignition lock cylinder fault)

Is your SECURITY light flashing?

If so, do this:

Turn the ignition switch to the START position then release the key, leaving it in the RUN position.
Wait approximately 10 minutes untill the security light stops flashing, then without turning the key off, turn it to the START position again. It should start. If it does, then you should probably replace your ignition lock cylinder. The problem will gradually get worse until this method no longer works.

Jul 09, 2011 | 2002 Pontiac Grand Am

1 Answer

Security light flashes and car will not run


try this, if this doesn't work then the key code sensor in the ignition lock is defective

PASSKEY LOCKOUT RESET ALL GM CARS 1999 AND UP
1) Put the key in the ignition and turn to the "ON" position. Leave it that way for 10 minutes. After 10 minutes turn the key and take it out. Repeat this process (2) more times (3 times, 30 minutes total) This should reset the PASSKEY system to recognize your key.

May 19, 2010 | 2002 Chevrolet Cavalier Coupe

2 Answers

Reset security system and flashing lights


put in key in ignition, turn to ON position (do not start) leave in on position for EXACTLY 10 minutes. As SOON as anti-theft light turns off, IMMEDIATELY start the car.

Oct 29, 2009 | 2002 Chevrolet Monte Carlo

2 Answers

1996 Oldsmobile Achieva: Security light flashes upon startup


Here is what you do, but only when the SECURITY light flashes - if it is always ON or OFF it's no use.
Turn the key in the ignition to ON.
Wait for exactly 10 minutes ( SECURITY light will flash for 10 minutes and then stay on SOLID)
Turn the key to OFF
Wait 5 seconds.
Turn the key in the ignition to ON.
Wait for exactly 10 minutes.
Turn the key to OFF
Wait 5 seconds.
Turn the key in the ignition to ON.
Wait for exactly 10 minutes.
Turn the ignition OFF.

Start the car normally.
It has relearnt the keycode and you're good to go.
NOTICE - it takes 30 minutes to relearn, that's THREE cycles of ON - 10 minutes - OFF.

Good luck.

Jul 11, 2009 | 1996 Oldsmobile Achieva

1 Answer

No keys


If you want to initiate a new master key.... 1. Insert new key into ignition cylinder and turn it to the ON (RUN) position. The security light on the dash will flash for fifteen minutes.
2. When the security light stops flashing, you have FIVE minutes to start the next step. Turn the ignition cylinder OFF and then back to the ON (RUN) position. The security light on the dash will flash for fifteen more minutes.
3. When the security light stops flashing, you have FIVE minutes to start the next step. Turn the ignition cylinder to OFF and then back ON (RUN) position. The dash will flash for fifteen more minutes.
4. After the security light stops flashing the third time, the new key has been programmed into the vehicles computer and will operate the car. It has replaced ALL the previous electronic key codes and is the ONLY key programmed into the vehicles computer.

The dealership should be able to do this for you without a current key, of course this means towing the vehicle to them. See if they will sell you a key and you program it yourself.

hope this helps. I found the above info at FordF150.net

Jun 22, 2009 | 1998 Ford Contour

1 Answer

99 GMC Sierra Pickup: Crank but no start. starts with starting fluid but dies. changed out the fuel filter. still not start. Do I have a bad Fuel Pump? Security light flashes then goes solid after 10 min....


The theft light issue is a good observation. Have you replaced the key tumbler or an ignition component lately? Has there been a lightning storm close very recently?

What the flashing security light is indicating is an attempt to relearn the key you are using.
Turn the key to run position, allow light to flash for 10 minutes, when light stops flashing turn ignition to OFF position for 5 seconds, turn ignition to run position and start over. Do this for 3 consecutive cycles, the the theft system will relearn the key cylinder code and store it once again.
Try that first before you go any further.
Let me know what you find.
Regards,

Apr 30, 2009 | 2000 GMC Savana

2 Answers

Security light flashing


Take the Original Ignition key out to the car. Get in it and turn the key on. Every light should light up like your going to start it. The factory security light will flash. Leave the ignition on until it stops flashing. Should take about 10-15 min to do it. once it does, shut the key off and then turn it over to start the car.

Aug 04, 2008 | 1998 Chevrolet Lumina

2 Answers

Put new ignition in 2003 sunfire. engine wont stay running and theft lock symbol on in dash


HI.

Follow this step to keep running your sunfire.
1 - Be sure the battery is full charged.
2 - Is better if you put a battery charged
3 - Turn the key to run position and tray to start the car and leave with the key in run position,
With a watch let pass 10 minutes no less. you gonna see the security light flashing and stop flashing after 10 munites.
4 - After 10 munites turn the key to off position during 30 seconds, with watch on your hand, OK.
6-- After the 30 seconds try to star the car

I hope this solve your problem.
Please letme know.

Thank you for use fixya.

Jul 11, 2008 | 2003 Pontiac Sunfire

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