2008 Chevy Malibu ls 2.4 l
Disabling the built in antitheft device
CG's is not the place to get car theft advice ;)
There's a procedure in the owners manual that tells you how to deactivate the security system. Most cars require you to have both key fobs to do this, and this is so thieves can't do it. If you don't have the owners manual, you might find it or the instructions for your car online.
You can't disable it but you may be able to not arm the system when you lock it up. For example if I lock my 2000 Grand Prix using the door lock switch on the door the vehicle is locked but the security system is not armed. If I lock it using the key fob the security system is armed. But, either way if someone tries to start the vehicle without the key, it won't start! Hope that helps! Jim