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U1016 Diagnostic Trouble Code Discussion for May 2010

Serial Communications Malfunction

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Trouble Ticket Help Requests for DTC U1016
Help Request Posted
2005 Chevrolet Silverado 1500 5.3L Intermittent comm. VIN: 1GCEK19Z35
U1016: Loss of ATC Class 2 Communication. This vehicle came in about a week ago with a communication problem. Customer needs to get state inspection sticker and they said there was no communication with the vehicle. I hooked up our Tech 2 and had no problems at all. Data came through just fine on all ...
May 03, 2010
2004 Chevrolet Tahoe LS 5.3L No Start VIN: 1GNEC13Z04
U1016: Loss of class 2 serial data vcm/pcm. ... my alternator"! Would barely start and stall! Starter may chatter like dead battery or bad switch! No communication pcm/tcm! Found codes in BCM U1000 U1016.and B 2961. Finally got U0107 from pcm and was able to unplug tac module to ...
May 17, 2010
1999 Cadillac DeVille 4.6L Stall VIN: 1G6KD54Y1X
U1016: Lost Communication With Powertrain Control Module. The car runs fine when it is cold, but when the temp gets to N.O.T. it has a tendency to cut off when you come to a stop. The ipc temperature reading is indicating 220F, but direct temperature reading is at water outlet is reading about 215F. We also replaced ...
May 25, 2010