security light on

2005 CHEVROLET IMPALA
200,000 MILES • V6 • AUTOMATIC
Avatar
HARRISL05
  • MEMBER
  • 1 POST
I just replaced my ignition switch and electric component. The car will not start and the Security light is flashing. I tried to unhook the battery and wait 10 mins thin put the cable back on and turning the key and waiting about 30 more mins.
Apr 11, 2016 at 8:23 AM
Advertisement
Avatar
JIS001
  • CERTIFIED EXPERT
  • 3,412 POSTS
Here is a guide to help with instructions below


https://www.2carpros.com/articles/how-to-reset-a-security-system

You can try and learn the pass lock without the tool. It is going to take about 30 minutes to learn...

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, vehicle will not start.
3.Observe the SECURITY telltale. After approximately 10 minutes , the telltale will turn OFF.
4.Turn OFF the ignition, and wait 5 seconds .
5.Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes . The vehicle is now ready to relearn the Passlock(TM) Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK.
6.Start the engine. The vehicle has now learned the Passlock(TM) Sensor Data Code and/or password.

IMPORTANT: The vehicle learns the Passlock(TM) 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.


7.With a scan tool, clear any DTCs if needed. History DTCs will self clear after 100 ignition cycles.

Hope this helps.
Nov 26, 2019 at 7:04 PM