Chevy Impala Sometimes Wont Start

I HAVE A 2000 3.4 CHEVY IMPALA SOME TIMES IT WILL NOT START LIKE EVERY OTHER WEEK OR SO. DOES THE SECURITY LIGHT THAT TURNS ON WHEN IM DRIVING HAVE ANYTHING TO DO WITH IT? CAN SOMEONE TELL ME WHAT TO DO IM REALLY TIRED OF IT LEAVING ME STRANDED.

Sounds like good ol' passlock. When it refuses to start, you see the security light right? Look around, MANY people have had this problem. Your Ignition is probably starting to wear out, causing Passlock to think someone is stealing your car. Try doing a "Security Relearn" for your key.

Make sure you follow this procedure to completion for correct operation. The doors and trunk must remain closed for the entire procedure

Properly executed, this procedure should take approximately 35 minutes to complete.

1. Attempt to start the car by turning the key to the Start/Run Position.

2. Observe that the vehicle fails to start and that the security light is illuminated.

3. Release key to the 'ON/Accessory' Position. (DO NOT turn key to the 'off' position.)

4. Allow the vehicle to sit with the key in the 'ON/Accessory' Position for no less than 11 minutes. At the end of the 11 minutes, the security light will shut off

5. Turn key to off position and allow the vehicle to remain in the 'OFF' position for no less than 30 seconds.

6. Repeat #1 - #5 for 3 cycles.

7. On 4th attempt, car should start.

NOTE : Since this is a fairly long procedure, it's a good idea to limit all electrical sources, such as disconnecting headlights, to prevent discharge of battery.

NOTE 2 : It is OK to wait LONGER than the allotted time, but it is not safe to wait less time. I.e. 12 minutes instead of 11 minutes should be OK; however, waiting 10 minutes instead of 11 minutes will result in a failed security relearn.