Daytime runners come on at night when put into park

2001 CHEVROLET CAVALIER
190,000 MILES • 2.4L • 4 CYL • 2WD • AUTOMATIC
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JOSEPH DE LA GARZA
  • MEMBER
  • 1 POST
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?
Jul 28, 2018 at 11:39 PM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
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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Jul 31, 2018 at 12:04 PM
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