Question about 2000 Cadillac DeVille

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Battery dead after sitting too long, after battery is charged, security light comes on and car will not crank... Is there a sequence that needs to be followed in order to reset the theif security on this vehical???

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Double ck you batt cable connectios. Turn on your headlights. If lights go out when attempting to cank, You have a poor connection. If they just dim, Your battery is Junk. Turn head lights odd when done. Good Luck

Posted on Jun 21, 2009

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Lock and unlock the doors with the key fob this usually resets the alarm. If the key fob doesnt work there is a procedure for resetting the system. But I can't remember off the top of my head but the owners manual does tell you how

Posted on Jun 21, 2009

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If #1 is not happening, charge the battery overnight.
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Has this vehicle been left to sit for awhile without being started? If so, the battery may be dead and need to be recharged or replaced. But if your engine cranks that is not the case. It might also be that your security system has been activated and locked everything up (but I thing the door lights would work then). If the battery is charged and okay, then suggest you take the battery cables off the battery for a couple of hours and see if the secutiy system will deactivate. Or check your owners manual for resetting the secuity system.

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