AutoCodes - Chevrolet - U18B9 CHEVROLET

U18B9 CHEVROLET Code - Primary High Speed CAN Bus Subnet Configuration List

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

|U18B9 CHEVROLET code possible causes

  • Faulty Module that is not configured
  • Module harness is open or shorted
  • Module circuit poor electrical connection

|How do I fix the U18B9 CHEVROLET 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 U18B9 CHEVROLET code

Labor: 1.0

The cost of diagnosing the U18B9 CHEVROLET 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 U18B9 CHEVROLET code possible symptoms?

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

|U18B9 CHEVROLET code description

The devices on the high-speed General Motor Local Area Network (GMLAN) serial data bus and the chassis high-speed GMLAN serial data bus must be programmed with software that specifically identifies the correct type and quantity of devices on the bus based on RPO configuration. If a device was not properly configured after installation, the appropriate U Code may be set for that device. No external circuit diagnosis is involved. The Diagnostic Trouble Code (DTC) will set when the device is not configured properly or the device recognizes a programming error.
OBDII Code U18b9 Chevrolet - Primary High Speed CAN Bus Subnet Configuration List -

|Need more information with the U18B9 CHEVROLET code?

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|U18B9 CHEVROLET code comments

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