Question about Chevrolet C1500

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MY CHEVROLET 1500 PICKUP SECURITY SYSTEM (PASSLOCK) HAS ENGAGED ITSELF AND NOW I CANNOT CRANK MY TRUCK. LAST TIME THIS HAPPENED I WAS TOLD TO USE THE KEY AND LOCK AND UNLOCK THE DOOR AND THAT WORKED. THAT WILL NOT WORK THIS TIME. WHAT SHOULD I DO? I CALLED THE DEALERSHIP AND THEY SAID IT CANNOT BE DISABLED. PLEASE HELP

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  • Anonymous Nov 03, 2008

    In my 2005 chevy malibu I have had problems with the security system engaging and not shutting off when I unlock the car. Now the locks pop up and down, the car locks and unlocks itself, and the alarm goes off when you open the door.

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Well we always found the cheapest way to fix that was to get a used column from a salvage yard and change the whole column. sorry but thats the cheapest and easiest.

Posted on Aug 19, 2008

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I have a 1999 chevy silverado and the security light comes on and stays on. After awhile, the light begins to flassh and the truck will not start till I reset the security system. how do I fix this?


you need to turn ignition on and leave key in on position for ten minutes then turn key off then back on again for another ten minutes then one more time for a total of three times or 30 minutes and the system should relearn the key. System is called passlock. I can email you the procedure form alldata if you want.

Mar 30, 2012 | 1999 Chevrolet Silverado 1500

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Took radio out now truck wont start.security light stays on,won't flash at all. tried deactivating passlock can't, also domelight,hd lights,l/door lock, keyless kemote not working. all this fr


Ypur security system is armed, if you was try unlock procedure from owners manual and wont work, its possible that you will need visit your dealer to reprogramming.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Feb 24, 2012 | 2002 Chevrolet Silverado 1500

2 Answers

How do i bypass the security on my chevrolet s10 so that it will crank


YOU CAN CRANK VECHICLE BY PUTTING KEY IN THE IGNITION SWITCH IN ON POSITION FOR 10 MINUTES UNTIL SECURITY LIGHT TURN ITSELF OFF.THEN TURN OFF IGNITION SWITCH FOR 5 SECONDS THEN START ENGINE.YOU CANT BYPASS THE THEFT SECURITY SYSTEM BECAUSE ITS A FEATURE THAT CAME WITH TRUCK.THEFT SECURITY SYSTEM IS CONTROL BY BCM AND PCM. IF YOUR IGNITION KEYS AND SWITCH IS FAULTY ALSO THE BCM THEY ALL HAVE TO BE REPLACED AT DEALERSHIP AND REPROGRAMMED CANT BYPASS SYSTEM YOU HAVE TO GET IT FIXED.

Mar 12, 2011 | 1999 Chevrolet S-10 Pickup

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My truck use to start first click went to start it the other day runs for a few seconds then shuts down security code seems to be locked need to know how to bipass


Your Passlock may need to relearn the ignition keys, if the ignition lock has gone bad like my in-laws Grand Am Gt, here is what i did so they will not get stranded any more. Buy a Passlock by pass module for around $70.00. You can order one from GMPASSLOCK.COM in the mean time try resetting the Passlock. Good luck

Ignition keys relearn takes about 30 min to do. 30-Minute Learn Procedure
1.) Turn ON the ignition, with the engine OFF.
2.) Attempt to start the engine, then release the key to ON; the vehicle will not start.
3.) Observe the SECURITY tell tale light. After approximately 10 minutes, the light will turn OFF.
4.) Turn OFF the ignition switch, and wait 5 seconds.
5.) Repeat steps 1 through 4 - two more times - for a total of 3 cycles of 10 minutes. 3x10 = 30 minutes.
The vehicle is now ready to relearn the Passlock Sensor Data Code and/or passwords on the next ignition switch turn from OFF to CRANK Important: Turn the Ignition Switch OFF. The vehicle learns the Passlock Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.
6.) Start the engine. The vehicle has now learned the Passlock Sensor Data Code and/or password.
7.) With a scan tool, clear any DTCs if needed. History DTCs will self clear after 100 ignition cycles.

Without a scan tool you may have momentary starter interruptions while history clears itself.

Jan 21, 2010 | 1999 Chevrolet Silverado 1500

2 Answers

2006 chevy colorado passlock comes on and stays on, truck won't start for 10+ min. Can I disable this feature?


No, it can not be disabled.
The theft system is indicating a short term theft issue.
Have you added any "after market" remote start systems or alarms?
If NO.
Insert the key in the ignition, turn the key to run position ( do not start ) and leave it in that position for 10 minutes. Cycle the key to LOCK position, count to 10, then turn the key back to run position and leave on for 10 more minutes. After the 10 minutes is up, repeat the procedure (1) more time and the security system will relearn the PASS code.
Give it a try and let me know.
Regards,

Mar 23, 2009 | 2006 Chevrolet Colorado

3 Answers

Chevrolet colorodo 2004


My 2004 Colorado did this exact thing I thought it was the battery. But it was until some one told me it happened to their GMC also. He said its a the passlock. It is a passive theft-deterrent system.Passlock enables fuel if the ignition lock cylinder is turned with a valid key. He then told me i turned the key to fast and it didn't read it. If a correct key is not used or the ignition lock cylinder is tampered with, the fuel system is disabled and the vehicle will not start.If the engine stalls and the security light flashes, wait about 10 min until the light stops flashing before trying to restart the engin. And remember to release the key from start as soon as it starts.

Nov 05, 2008 | 2004 Chevrolet Colorado

5 Answers

1999 Chevy S-10, how can I bypass the Security Fuel shut off sytem?


the way that i was told how to do a quick fix for is to hold the key in the electrical start and the actual start up of the engine and hold it there tell the security light is solid and then turn off the truck then bring it back to that point and let it blink until it turns off then you can start the truck.

Jul 11, 2008 | 1999 Chevrolet S-10 Pickup

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