Security Chime And Light

[ryan33]

I have a 2000 Sierra 1500 SLT and when I put the key all the way back so only the radio is on the security chime and dash light also come on and stay on the same as what it would do if the key was in ignition and the door was open. i am wondering if anybody has ran into this problem and how to fix it because now the only way to listen to the radio without the engine running is to turn the key to run, and that kills the batterys cause the headlights and dash lights come on... Any thoughts??