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Old 01-07-2020, 07:42 PM
phill57 phill57 is offline
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Default No Communication with Chassis Control Module 2014 Silverado

Working on a 2014 Chevrolet Silverado VIN 3GCUKSEC8EG233153 few days ago for a "Check Trailer Wiring" message popping up on the dash. The trailer brake control module on this vehicle is a slave to the Chassis Control Module. When I scanned this vehicle I had no communication with the Chassis Control module. This led me to spend time testing power, grounds and CAN bus circuits to the module. Tried another scanner a Maxisys Elite and it had no communication either. I noted that none of the other modules set a code for the missing Chassis Control Module until I had it unplugged testing circuits. After a significant amount of wasted time tried a third scanner this time a MaxiAP200 smart phone scanner and guess what? communicates just fine with a fault code C1114 current. Turned out I needed the trailer brake power module to fix this thing but wasted lots of time due to no communication. Tried manually ID'ing the vehicle as a 2015 and everything seems to work just fine. Using a Verus Edge initially with bundle 19.4.1 and then 19.4.2 which I just updated today. I'll post a video link as soon as it uploads.
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Old 01-08-2020, 07:06 PM
phill57 phill57 is offline
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Default Video Link

here is a link to the video showing the lack of communication with the Chassis control Module and trailer brake system.

https://www.youtube.com/watch?v=ueJOqXwJlrw
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Old 01-09-2020, 01:07 PM
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Jay G. Jay G. is offline
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Quote:
Originally Posted by phill57 View Post
here is a link to the video showing the lack of communication with the Chassis control Module and trailer brake system.

https://www.youtube.com/watch?v=ueJOqXwJlrw
Thanks Phill57, I have past this information on to the development team.
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Old 01-12-2020, 01:22 PM
Glide Glide is online now
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The subject of this thread is not news. See here http://productforum.autorepairdata.c...ad.php?t=13112
There are several functions that do not work on 2014-2016 Sierra/Silverado when using snapon scan tools and haven't worked for 2 years or more.
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