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Cadillac Repair/99 cadillac deville wont stay running?

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Expert: - 10/10/2010


Question
i have a 99 cadillac deville and i recently got my battery changed and when the place put the new battery in my car will start for a brief second but cut it's self off for some reason. I was told it might have to push a fuel pump over-ride button but i dont know where it is located on the car to push. Any idea's on why it wont stay started up or do you know where the fuel pump over- ride button is located on this car? Thank you for your time!!!

Answer
Hello,

Changing the battery should have nothing to do with an emercecy fuel shut off. Even though I am very familiar with GM vehicles, I have never seen such an issue on them, however I am very familiar with this button on Fords. It was designed for rear end collisions dating back to their bomb the "Pinto."

i do not know if your Cadillac even has such a switch, but it did, it would probably be located under the dash, carpet or at the kick panel at the passenger side. I have never seen one on a GM car.

Someone might tell you it may be the anti theft system as well, and I can assure you it isn't because the engine will not crank.

The problem I have in assisting you is that I am not at the vehicle. Your problem can be fuel, but it can be electric/electronic as well.

Who knows? Maybe they blew the computer fuse(s). You need to check all fuses at both fuse boxes before doing anything else. Are all leads hooked to the battery?

What makes it easier to diagnose is that the engine ran before the battery was replaced. This way you can work backwards eliminating what could have gone wrong since.

I would be looking for something not reattached to the battery and checking the fuses.

Let me know what you find.

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Rob Painter

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Alarm system questions cannot be answered on this forum. These systems are not what I can answer. Without being physically at the vehicle and not knowing what kind of electrical service has been done on the vehicle, there is no possible way to give an accurate answer over the internet. My expertise is in Ignition/key based anti-theft systems. These issues include GM VATS (resistor chip in key blade) PASSLOCK (MRD)-ignition lock rotation based, no special ignition key and the PKIII Transponder (computer chip in key) systems. These systems are not alarm based and are integral with the starting of the engine. This is why I cannot diagnose alarm problems without physically looking at the vehicle: Alarm systems are a completely different annimal than ignition key/lock based anti-theft system. Many alarm questions come from vehicles 10 years old, and since older, many hands that had been involved over the years.I am an expert in all GM factory (ignition/key based)systems. Alarm system questions pose to many situations beyond my knowledge as to what has been done to the vehicle over the years. Some guy may have actually wired the stereo into the alarm system. Who knows? Over my past 30 years in vehicle wiring repair, I have seen unbelievable wiring disaters done by guys that consider themselves "mechanics." I have seen stereos and alarms intalled using surgical tape. I have seen modules burn up, un-fused circuits, wiring jambed between the doors and even lamp cord used for a starter kill. To answer alarm questions over the internet without examining the vehicle is like asking; What does it take to remove a dent?

Experience

Education/Credentials-ASE certified. 11 years with a GM dealer and 17 years with a repair facility dealing with only the repair of theft recovered vehicles.

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