Anti theft deterrent?

Tiny
CHAPOE23
  • MEMBER
  • 2018 CHEVROLET IMPALA
  • 3.6L
  • V6
  • AUTOMATIC
  • 64,753 MILES
All my gauges and the A/C does not work, and it says anti-theft deterrent.
Monday, March 17th, 2025 AT 2:22 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,193 POSTS
This happens when the system is enabled. I would do a hard system reboot to reset the system.

https://www.2carpros.com/articles/step-by-step-guide-performing-a-hard-system-reboot-for-your-vehicles-electronics-systems

Does your key fob have new batteries? Have you tried your spare key? I would start by checking the fuses, here is a guide to help and the fuse locations in the images below:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the images (below). Let us know how it goes.

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Monday, March 17th, 2025 AT 12:23 PM
Tiny
CHAPOE23
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  • 1 POST
No I did everything that you suggested and nothing happened. Still does the same thing.
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Tuesday, March 18th, 2025 AT 12:16 PM
Tiny
KEN L
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Okay, it look like the BCM might be out, I would do a CAN scan you see if any codes are stored. Please go over this like to see how:

https://youtu.be/u-4syLc-ifQ

Here is the locations of the BCM so you can check it out, I would remove the electrical connectors and look for corrosion, disconnect the battery first. If a code is stored for the BCM you can get a preprogrammed unit by searching Google or Ebay. Check out the images (below). Let us know how it goes.

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Wednesday, March 19th, 2025 AT 10:15 AM

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