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
22,660

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
22,660

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

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