Question about 2001 Cadillac DeVille

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2001 Cadillac Deville Security System

Car won't start, turn key and nothing. Battery is good. Have tried locking and unlocking with remote on both keys. I would guess security system has locked up.

Any ideas?

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  • 3 more comments 
  • cad18702 Sep 15, 2008

    car wont turn over theft system just replaced... still same problem says its disabling 2001 cadillac deville sedan help......

  • Mike Ski Feb 23, 2009

    Where is engine to chassis ground. Under rear seat or engine compartment

  • MarWell Mar 24, 2009

    Car won't start, turn key and nothing. Battery is good. Have tried locking and unlocking with remote on both keys. Lights and all electrict functioning. No noise from starter. Cleaned and tightened all connections on battery, starter, and the jump start terminal under red cover on passinger side under hood above wheel. Always starts first time daily or when sitting an hour or more. Does not start after being driven either short or long distance about once monthly. Doors lock and unlock with either remote FOB or with any key. Security system light seems same as always.

  • baeasley Apr 19, 2009

    my security system light came on what can i do without taking it to a dealership that charges to much money to fix.

  • Anna Bryant Jun 21, 2013

    my alternator went out on a trip so I drove on battery till it diesd..I have had the alternator replaced and battry ..now it will not start says secuirty system need service as well as tire monitor and air bag ...I have turned the key on and left for over 10 minutes and then tried to start ..nothing ..now doing over 10 min in run then off then over 10 min in run then off...and will repeat one more time ...if that does help what do you recommend?

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Check engine to chassis ground I had same prob

Posted on Oct 03, 2008

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Have you checed all of the wires and connections for this system there might be a loose connection somewhere also check the batteries in the remote

Posted on Aug 20, 2008

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I had a similar problem intermittent NO START. No click, buzz or other noise. Everything worked but wouldn't start. Unfortunately it took two trips to the dealer to locate the problem. Next time it happens find the purple wire in the wire harness under the cover on top of the engine. A simple tester that connects to ground with an lighted "awl" type probe will tell you if there is power from the key to that point. If there is and you're not starting then the only other thing downline is the starter. Can't repair them only replace. Dealer will be about 900.00 P&L , If you're daring or have some help it's right on top DIY 400.00.

Posted on Apr 21, 2009

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Purple wire in the wire harness under the cover on top of the engine were does it go connected to

Posted on Mar 26, 2011

  • Naomi Scheepers
    Naomi Scheepers Mar 11, 2014

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