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BCM & ECM out


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Please tell us more, like, what happened? Did someone connect jumper cables or a battery charger with the positive terminal on the battery ground terminal? Did it just happen suddenly one morning when you came out and started the car?

What is the car doing? What tells you the BCM and ECM are malfunctioning -- what do you mean by "out?"

-- Click Here for CaddyInfo page on "How To" Read Your OBD Codes
-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data
-- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC
Yes, I was Jims_97_ETC before I changed cars.

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