2001 Cadillac DES Electrical Problems?

2001 CADILLAC DEVILLE DTS
119,000 MILES • V8 • FWD • AUTOMATIC
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GIZMORPH
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2001 Cadillac DTS DES with 119,000 miles
v8 4.6 liter Northstar Automatic Front Wheel Drive
2001 Cadillac DTS DES

I have a 2001 Cadillac DES. I was driving on the highway and the headlamps began to flicker on and off, same thing with dash lamps and warning lights, electronic speedometer went crazy. Battery said low volts. I got home and turned the car off and went to re-start it and it would just click. I took the battery and had it tested. Tested good. I noticed when I turned the key off the fuel pump would continue running. Unhooked battery cables then re-hooked them and the pump was off, I turned the key over and off again and pump did same thing. Possible Ignition problem? Any help is greatly appreciated.

Additional info: I tried another battery and now it is saying to have the anti-theft system checked.
Thank you,
Nicole
Mar 4, 2011 at 11:48 AM
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FACTORYJACK
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Is the charging system functioning, or is it discharging until the voltage is low enough to cause a multitude of faults?
Mar 5, 2011 at 3:54 AM
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CADIEMAN
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sounds like a loose ground and u set of the alarm. cycle the key in the key in l/f door will cansel alarm.
Mar 5, 2011 at 4:54 PM
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