99 deville won't start in morning

Asked by Mar 28, 2017 at 12:29 AM

Question type: Maintenance & Repair

So my deville won't start after sitting
overnight, I use a jump booster to start it
and I'll let it run for 10-15 minutes and shut
it down, and it will start right up several
times. But if I let it sit over night it won't
start and the car opens my gas cap door?
Every morning I walk outside and I know it
won't start because my gas door is open..
had battery tested it's perfectly fine.. any
thoughts?

2 Answers

73,035

The gas door is a clue if that is electrically operated. The vehicle would have to be checked for a parasitic draw on the battery. This is how it is done... www.youtube.com/watch?v=QRso1A0VScw

1 of 1 people found this helpful.

Problem solved!! Had a amp draw, I traced it back to the PZM. Got another PZM from junk yard for $25. Car runs great!!! Ty for the lead...

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