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Trunk open sensor

Tiny
JOHN. FRASER
  • MEMBER
  • 2001 CHEVROLET MONTE CARLO
  • 3.4L
  • 6 CYL
  • 2WD
  • 210,000 MILES
The trunk open sensor keeps chiming and showing "trunk open" in the message center. The trunk latch sensor has been replaced and even removed completely but it continues to chime.
Wednesday, October 17th, 2018 AT 8:31 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hello,

I would check the wiring to the BCM. Here is a guide and the trunk wiring diagrams. If okay it sounds like the BCM is having issues and needs to be replaced. I would try a used one here is the location. Also here are the truck wiring diagrams so you can see how the system works:

https://www.2carpros.com/articles/how-to-check-wiring

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

Cheers, Ken
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Thursday, October 18th, 2018 AT 6:31 PM

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