U0107 GMC - Lost Communication With Throttle Actuator Control Module

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Throttle Actuator Control (TAC) module
  • Throttle Actuator Control (TAC) module harness is open or shorted
  • Throttle Actuator Control (TAC) module circuit poor electrical connection (loose or broken wires)
  • Tech notes

    There is a factory service bulletin for the U0107 code on following Cadillac vehicles:

    2006-2007 GMC Savana 1500/2500/3500
    2006-2007 GMC Sierra
    2006-2007 GMC Sierra Flex Fuel
    2006-2007 GMC Sierra Hybrid
    2006-2007 GMC Sierra Performance Edition
    2006-2007 GMC Sierra 2500/3500 HD
    2006-2007 GMC Yukon

    Factory Service Bulletin GMC OBDII Code U0107

    When is the code detected?

    The U0107 code is set when the Powertrain Control Module (PCM) detects a loss of data or invalid data from the Throttle Actuator Control (TAC)

    Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • No throttle response
  • U0107 Gmc Description

    The Throttle Actuator Control (TAC) module and the Powertrain Control Module (PCM) communicate via a dedicated serial data circuit. This serial data circuit is separated from other serial data circuits on the vehicle. Accurate transmitting and receiving of serial data require no only a good circuit integrity, but also sufficient system voltage. This diagnostic test monitors de accuracy od the serial data transmitted between the TAC module and the PCM.
    OBDII Code U0107 Gmc - Lost Communication With Throttle Actuator Control Module - AutoCodes.com

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