how do you bypass "passlock" on an 03 chevy tahoe?

[David]

I had a automatic car starter put on atleast 3 years ago. I think it came with its own security system. It was wired in so the locks and alarm work with the remote. Yesterday, i went to start the tahoe by the key, but the battery was dead. when i jumped it, the front marker lights were flashing and the engine was not running at full capacity. i looked in the manual, and read something about the passlock, it said that if the security system was failed, the lights would be blinking. I need to know how to bybass this,and if it has something to do with the security on the remote starter