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Daytime runners come on at night when put into park

Tiny
JOSEPH DE LA GARZA
  • MEMBER
  • 2001 CHEVROLET CAVALIER
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 190,000 MILES
I just changed my battery I assume I have a issue with the alternator but while at night my daytime runners are on when I set my vehicle in park. How is that possible?
Saturday, July 28th, 2018 AT 11:39 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,033 POSTS
Hello,

This happens when there is a voltage spike which happens sometimes when you connect a new battery. The BCM controls the DRL's and it sounds like part of the BCM has malfunctions due to the battery change.

I would try a used one first here is the location below.

Check out the diagrams (below). Please let us know what happens.

Cheers, Ken
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Tuesday, July 31st, 2018 AT 12:04 PM

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