Can I bypass security system, and how.

Security system is ran by your truck,s ECM,and would be tuff to by pass without causing damage to your truck,and if no alarm or flashing light,s are present,the problem may not be the anti theft system,it may be bad battery,starter,blowed ,ECM fuse,or your truck key.

I have a 2002 Durango, I have the flashing lights and four ways flashing but no horn beeping, could it be the security system and if so what can I do to disable it

Sounds funny but get in your car with All Doors Shut ALL of them completely shut To through key positions and hit the lock and unlock button as you turn key to the positions it allows Try turning engine on ...repeat use of unlock/ lock button Car should still be on and running at this point