Whenever you service the theft system you must do a relearn. Here is what you need to do. This is just a simple procedure that is going to reset the passlock system.
engine
OFF.I have a 2002 alero how do you reset, the coolant light is always on. Thanks, Alero owner
how do you bypass passlock on 2002 Chevy impala
"Why is your 2002 alero jerkingDo I need a speed sensor?" "Why is your 2002 alero jerkingDo I need a speed sensor?"
If the security light is flashing on the dashboard when the key is on the "on" position, the passlock system is enabled. Refer to you owner's manual to deactivate the passlock system.
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IF YOUR BATTERY DIES I found the answer to this under Alero 2002 security system will not let you start the car with out leaving key on for 10 minutes then you turn the key off then it will start?and this worked for me too. My battery went dead and after a boost and several other things the car would still not start. I then tried the above (key in the ignition and turned to the on position for 10 - 15 minutes or until "Security" stops flashing on the instrument cluster) and it started right away. I believe with the PASSLOCK II TM system the resistance of the key must be read before the car will start. Thanks for the advice DD
vehicle will not start how do I reset the computer you don't need to
Chances are good, especially if you keep trying to start/run it.
Have vehicle scanned to determine the problem
You'll have to get a tuner to disable it through the computer. If your talking with a remote start, you can bypass it with a "passlock" which can be found at car alarm shops