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Chevrolet
Cobalt
Engine
Computer
No Communication
Lost communication with the ECM
2007 CHEVROLET COBALT
80,000 MILES • 2.0L • 4 CYL • FWD • AUTOMATIC
KYLE POWELL
MEMBER
1 POST
I hooked my car up to my scan tool and I have no communication to the ECM. what could be the reason I have no communication to it?
Aug 17, 2017 at 6:19 AM
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STRAILER
✓
Experienced Mechanic
55,594 POSTS
The main reason for no communication is a blown fuse to the ECM or BCM.
Here is the location of the fuse panel and a guide to help you check them:
https://www.2carpros.com/articles/how-to-check-a-car-fuse
If all fuses check out then I would suspect a bad ECM.
Please let us know what happens so we can keep helping you.
Cheers, Ken
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Aug 18, 2017 at 5:21 AM
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