How do I bypass the passlock security system on my 98 Chevy s10

SOURCE: 98 chevy s10 blazer turn signal

Unplug the turn signal relay from the fuse box and start you engine. Does it still make that noise?
If yes... Put the relay back in, that is not the problem.
If No...Then the relay could be bad, replace it!

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SOURCE: gm passlock security system how to disable

Wiring diagrams can be found online, however i believe you can re-learn the key by leaving it inside the ignition tumblen and switch it to accesory. Then disconnect the b attery for about ten minutes and then try starting the car without taking the key out.

Jermaine Johnson

• 81 Answers
• Posted on Jun 18, 2009

SOURCE: theft system passlock on 2003 chevy malibu. theft

yr gonna have to get the passlock key and punch it into the radio so u can solve ur problem most chevy dealships can assist you with that.

SOURCE: I have a 2002 Chevy Avalanche, that the battery

if your security light is on it won't start. Leave the key for tens minutes or so until the security light flashes then it should start.

Harvey N Tawatao

• 3854 Answers
• Posted on Jan 18, 2010

SOURCE: pass lock problems

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.