AutoCodes - Gmc - U1817 GMC

U1817 GMC Code - Lost Communication With Hybrid/EV Powertrain Control Module On Powertrain Expansion CAN Bus

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|U1817 GMC code possible causes

  • Faulty Power Inverter Module
  • Power Inverter Module harness is open or shorted
  • Power Inverter Module circuit poor electrical connection
  • Faulty Hybrid/EV Powertrain Control Module

|How do I fix the U1817 GMC code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|Cost of diagnosing the U1817 GMC code

Labor: 1.0

The cost of diagnosing the U1817 GMC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are U1817 GMC code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|U1817 GMC code description

Devices connected to the powertrain 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 devices. The devices 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 device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device.
The Hybrid/EV Powertrain Control Module 1 is internal to the Power Inverter Module. Communication diagnostics for the serial data, including device power and ground as well as the wakeup circuits for the Hybrid/EV Powertrain Control Module 1 is diagnosed from external sources only to the Power Inverter Module connector because any circuit fault condition within the Power Inverter Module will cause a complete replacement.
The Diagnostic Trouble Code (DTC) will set when a supervised periodic message that includes the transmitter device availability has not been received.
OBDII Code U1817 Gmc - Lost Communication With Hybrid/EV Powertrain Control Module On Powertrain Expansion CAN Bus -

|Need more information with the U1817 GMC code?

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|Need help with a U1817 GMC code?

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|U1817 GMC code comments

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