Engine-Codes - Gmc - U0423 GMC

U0423 GMC - Invalid Data Received From Instrument Panel Cluster Control Module

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

U0423 GMC Possible Causes

  • Faulty Instrument Panel Cluster Control Module
  • Instrument Panel Cluster Control Module harness is open or shorted
  • Instrument Panel Cluster Control Module circuit poor electrical connection

How is the U0423 GMC code repair?

Start by checking 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.

Tech Notes

Check for other Powertrain Control Module (PCM) codes or PCM related symptoms. Diagnose all other PCM codes or PCM related symptoms first.

What is the cost to diagnose the U0423 GMC code

Labor: 1.0

The cost to diagnose the U0423 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.
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Possible Symptoms

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

U0423 GMC Meaning

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. Some devices are constantly receiving information from other devices through serial data communication network. The invalid data Diagnostic Trouble Code (DTC) will be set when a receiving device detects a discrepancy in the information it receives from the Instrument Panel Cluster Control Module causing its integrity to be questioned.

More Information

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