I had the battery in my 2000 chevy 1500 disconnected and now the truck won't turn over and I think its in some sort of security mode. How do I reset this so I can start my truck?

 

Insert key, attempt to start the vehicle and leave the key in the ON position.
In some vehicles, the Battery and Security light will blink for several seconds, and then shut off. Then the Security light will then remain ON. Leave the ignition ON until the Security light goes OFF. This will take more than 5 mins.
When the Security light goes OFF, turn the ignition to the OFF position.
Leave ignition OFF for 20 Seconds.
Attempt to start the vehicle again and leave the key in the ON position.
In some vehicles, the Battery and Security light will blink for several seconds, and then shut off. Then the Security light will then remain ON. Leave the ignition ON until the Security light goes OFF. This will take more than 5 mins.
Turn the ignition to the OFF position for 20 Seconds.
Attempt to start the vehicle again and leave the key in the ON position.
In some vehicles, the Battery and Security light will blink for several seconds, and then shut off. Then the Security light will then remain ON. Leave the ignition ON until the Security light goes OFF. This will take more than 5 mins.
Once this entire procedure has been completed (three times) your vehicle will start on the fourth attempt.
Note: Some vehicles perform the relearn in a different sequence. You may notice your security light, battery light and abs light will alternate. Once the security light is left out of the sequence that is considered one step. Repeat the procedure two more times and on the fourth time your vehicle will start.

FAQs:

More info here:

http://www.nelsonperformance.com/passkey.htm

 

I waited roughtly 20 mins and the security light never went off. Is this normal? Guess I'll just try to keep running the cycle

 

we had a truck do this once..we were dumbfounded..finally found that procedure on our mitchel ondemand manual..it worked..

 

ok I tryed the procedure 3 times and still nothing. The Security light never goes out. Is this something that you can reset with a scan tool?

 

ever figure it out?

 

Nah, he's been stranded with an engine that won't turn over since 2006...waiting for someone to chime on here.

I'm kidding man. That post was literally 20 years ago. Please start a new thread.