Will Not Start

Thanks we had to get a new fuel pump cost $210.00 from Rock started right up :) The guide was the best!

I am having problems with my car starting all the time. It has gotten worse and now it won't start until I try starting it, then turn everything off, lock all doors, stay inside the car and after 10 minutes the clock goes off and then it will start. The security light sometimes stays on. I have had the problem for several years. When it first started it would only do it every 10 or so times, other times it would start fine. Now it is every time I try to start it. Even if I only turn it off for a few minutes to run in the store. PLEASE, PLEASE HELP ME! We took it to the dealer here and after a bill of over $500.00 it worked for a little while then I took it back in and they said they couldn't fix it. Oh, another thing is that my automatic lock system doesn't always unlock the driver's door and sometimes when I use it to lock the doors, the drivers side lock only goes down half way.

I don't leave the key on for the ten minutes. I take the key out, lock everything up and turn everything off then sit for 10 minutes. I feel like it is a security problem but as I said, the dealer we have here have said they don't know what is wrong and can't fix it. Thanks for your quick response but the key isn't the problem I don't think since I do take the key out.

I realy don't want to tow this thing to the dealership if I can fix it myself. But without my fluke meter it's harder to track down the prob. I'm hoping someone might have had the same issue before and can help me out. AT FIRST I THOUGHT IT WAS THE FUEL PUMP BUT TURNS OUT IT'S NOT. SO I CHANGED THE FILTER AND THE BATTERY AND THE SPARK PLUGS... AND NOTHIN SO FAR. NEXT GUESS IS TP SENSOR? HELP?

My car just didnt want to start. It started we drove it for like 5 min and then parked and it wont start again. Its not the starter because it wants to start and it just dosent want to go. Please help me because I feel like pulling my hair out.

Engine Mechanical problem
2000 Cadillac Escalade Four Wheel Drive Automatic 118000 miles

its getting gas and spark and is turning over but will not start

Car runs fine then wont start I let the car sit for day the car starts it misfires at the start but then works fine

Engine will start when it is cold and runs fine. Seems to burn more fuel, After the engine is shut off, it cranks, but will not start. Security light is illuminated and a ratcheting noise is coming from the throttle body.

Thanks for your response. Are security and ignition modules the same?