I have a 2001 Grand Cherokee. I recently let a friend borrow it for a couple of weeks while their car was being repaired. Now mine needs repair and I can't figure it out. The security system keeps going off every time you turn the key. The only way to stop it is to unhook the battery. There is no working remote. I only had one, and it just stopped working about two years ago. I've been using the key to unlock the doors ever since. I tried buying a complete (used) set consisting of the computer, the SKIM module, key switch and key. Did not help problem at all. The engine will turn over but will not crank. The battery is good. I'm at a loss. Any ideas how to correct this? Its been sitting for about 4 months now, and if I don't get it cranked soon, I"m afraid the fuel system will be ruined. PLEASE HELP! And advice or suggestions would be greatly appreciated. Thank you.