Car won't start

Asked by Jboi801 Oct 15, 2017 at 03:12 AM about the 2003 Cadillac DeVille DHS Sedan FWD

Question type: Maintenance & Repair

I just replaced the alternator in my 2003
Cadillac DeVille and now it won't start
security light is on what can I do to fix this?

3 Answers
22,630

Guru9FSV8 answered 7 years ago

Is the ground wire from alternator to body broke? Also try taking out ECM relay and putting key in ignition and turning it to acc, do not start for 5 minutes then turn key off and put relay back in. Then try to start car. Keep keys in your pocket if you get out as to not lock them in with security light on.

Mark helpful
22,630

Guru9FSV8 answered 7 years ago

On this ground wire, how much voltage drop is there? Anything over .4 volt and your car will not start

Mark helpful

Your Answer:

Related Questions

  • Car won't start 1 Answer

    Car won't start, fuel pump stays on until driver's side door closes, also gas gauges are not registering

    2003 Cadillac DeVille

    -

    Maintenance & Repair

  • Car won't start 1 Answer

    Car won't start what should I do all the fuses are good everything in my car comes on the radio the dash the fuel pump and just won't turn over what should I do

    2003 Cadillac DeVille Sedan FWD

    -

    Maintenance & Repair

  • Car won't start 1 Answer

    I thought my car wasn't starting because I needed a new battery so I bought a new battery and it still won't start I even tried to jump it and still nothing. So I don't know what else it could be

    2001 Cadillac DeVille Sedan FWD

    -

    Maintenance & Repair

  • Car won't start 2 Answers

    My car won't start, every dead. I put it on charger an amps read 13.4 try starting it and do nothing but it vibrate at the relay. When i take charger off the amps fall quickly. What might be th...

    2000 Cadillac DeVille DHS Sedan FWD

    -

    Maintenance & Repair

  • Car won't start 3 Answers

    I just replaced the alternator in my 2003 Cadillac DeVille and now it won't start security light is on what can I do to fix this?

    2003 Cadillac DeVille DHS Sedan FWD

    -

    Maintenance & Repair

DeVille

Looking for a Used DeVille in your area?

CarGurus has 8 nationwide DeVille listings and the tools to find you a great deal.

Postal Code:

Shortcuts

Search Cadillac DeVille Questions

CarGurus Experts

  • #1
    James Sparrow
    Reputation
    4,090
  • #2
    tuff4x4
    Reputation
    3,090
  • #3
    Cynthiasmith
    Reputation
    2,840
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Cadillac Eldorado
4 listings
Used Lincoln Town Car
6 listings
Used Chevrolet Impala
12 Great Deals out of 112 listings starting at $3,531
Used Cadillac CTS
4 Great Deals out of 48 listings starting at $6,999
Used Chevrolet Corvette
26 Great Deals out of 1,005 listings starting at $11,995
Used Cadillac Escalade
14 Great Deals out of 396 listings starting at $6,995
Used Mercedes-Benz S-Class
12 Great Deals out of 224 listings starting at $8,887
Used Ford Mustang
53 Great Deals out of 1,256 listings starting at $4,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.