u0101 code on 2007 g6 ??

Asked by Apr 19, 2017 at 05:39 PM about the 2007 Pontiac G6 GT

Question type: Maintenance & Repair

u0101 code from autozone? odometer reading error starts and runs

1 Answer

75,545

U0101 PONTIAC - Lost Communication With Transmission Control Module...Possible causes; Faulty Transmission Control Module (TCM), TCM harness is open or shorted, TCM circuit poor electrical connection...Possible symptoms; Engine Light ON (or Service Engine Soon Warning Light) U0101 PONTIAC Description; Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module.

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