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All dash lights came on gauges stopped working, started then shut off

Tiny
RONNY J.
  • MEMBER
  • 2000 CHEVROLET MALIBU
  • 3.1L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 300,000 MILES
Driving all dash lights came on. Gauges stopped working. It continued to run. Turned it off then no start. Starts for a couple of seconds then shuts off. Changed out ignition switch. Key lock switch. Did the anti-theft procedure. Changed out the camshaft sensor. Changed out BCM. Still same no start. When BCM was unplugged the dash lights remained on and car will still start and shut off the same as before. It made no connection to the BCM that was put in. Still showing the same mileage as the old BCM had in it. I'm at a loss now on what is wrong. Maybe the ECM now? I need help. Ronny J.
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Friday, February 8th, 2019 AT 9:27 AM

2 Replies

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

I have included in the diagrams down below a troubleshooting flowchart for your vehicles condition. I have also included wiring diagrams for the instrument cluster and the warning system. You might want to pay particular attention to the instructions about having to have replacement BCM programmed to have it work properly. I hope this helps out and let us know what you find out.

Thanks,
Alex
2CarPros
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Friday, February 8th, 2019 AT 10:25 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,614 POSTS
If I can jump in here. it sounds more like the ignition switch was gone out, but to be sure let's use this guide to test through the switch and the wiring diagrams below to confirm the connections.

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

Check out the diagrams (bBelow). Please let us know what you find.
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Friday, February 8th, 2019 AT 12:24 PM

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