Battery drained by the stereo

Tiny
CRAIG RADEBAUGH
  • MEMBER
  • 2001 CADILLAC DTS
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 12,000 MILES
My battery was drained overnight. Got a new one. Same problem. My brother narrowed it down to the stereo and pulled the fuse. No more drain, he thinks it may be a relay but has not had the time to figure it out. Any ideas?
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Saturday, June 22nd, 2019 AT 1:33 PM

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Tiny
KEN L
  • ADMIN
Hello,

There could be two things causing this. First the BCM is not shutting off the radio or the radio is not shutting off internally. The best way to tell is to remove the radio and cut the two purple data lines to see if the radio shuts off if so the BCM is bad if not the radio is. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Monday, June 24th, 2019 AT 3:42 PM

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