AutoCodes – GMC – U0076 2018 GMC Sierra

U0076 2018 GMC Sierra Code - Control Module Communication Powertrain Sensor CAN Bus Off

Quick Answer

The devices connected to the object high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Check for more codes, Faulty Control Module, Control Module harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: U0076 2018 GMC Sierra indicates Control Module Communication Powertrain Sensor CAN Bus Off.
Common causes: Common causes include Check for more codes, Faulty Control Module, Control Module harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 285

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 20, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0076 2018 GMC Sierra Description

The devices connected to the object 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 when the ignition switch is in any position other than OFF. The object high-speed GMLAN serial data bus uses terminating resistors that are in parallel with the object high speed GMLAN (+) and (-) circuits. The Diagnostic Trouble Code (DTC) sets when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U0076 2018 GMC Sierra - Control Module Communication Powertrain Sensor CAN Bus Off - AutoCodes.com — U0076 2018 GMC Sierra Code - Control Module Communication Powertrain Sensor CAN Bus Off

What does this mean?

What are the Possible Causes of the DTC U0076 2018 GMC Sierra?

Check for more codes
Faulty Control Module
Control Module harness is open or shorted
Control Module circuit poor electrical connection

How to Fix the DTC U0076 2018 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0076 2018 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the U0076 2018 GMC Sierra code?

Need more information on how to fix the U0076 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0076 2018 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U0076 2018 GMC Sierra Code

1. What does the OBDII code U0076 mean for a 2018 GMC Sierra?

The U0076 code indicates a Control Module Communication Powertrain Sensor CAN Bus Off error in the vehicle's communication system.

2. What are common symptoms of the U0076 code in a 2018 GMC Sierra?

Common symptoms of the U0076 code include loss of communication between various control modules, dashboard warning lights, transmission shifting issues, and potential engine stalling.

3. What can cause the U0076 code to trigger in a 2018 GMC Sierra?

The U0076 code can be triggered by issues such as a faulty control module, damaged wiring or connectors in the CAN bus system, low battery voltage, or a software glitch.

4. How can I diagnose the U0076 code in my 2018 GMC Sierra?

Diagnosing the U0076 code involves using an OBDII scanner to retrieve the code, inspecting the CAN bus wiring for damage, checking control modules for proper communication, and testing battery voltage.

5. Can I still drive my 2018 GMC Sierra with the U0076 code present?

It is not recommended to drive your vehicle with the U0076 code active, as it can lead to further damage and safety risks. It's best to address the issue promptly.

6. How can I repair the U0076 code in my 2018 GMC Sierra?

Repairing the U0076 code may involve repairing or replacing damaged wiring or connectors, resetting control modules, updating software, or replacing faulty components.

7. Is the U0076 code a serious issue in a 2018 GMC Sierra?

While the U0076 code may not directly affect the drivability of the vehicle, it can lead to other problems if left unresolved. It's important to address the issue to prevent further complications.

8. Can the U0076 code be a recurring problem in a 2018 GMC Sierra?

If the underlying cause of the U0076 code is not properly addressed, it can recur. Thorough diagnosis and repair are necessary to prevent the code from coming back.

9. Are there any DIY solutions for the U0076 code in a 2018 GMC Sierra?

DIY solutions for the U0076 code may include checking and securing connectors, inspecting wiring for damage, and performing basic resets. However, complex repairs may require professional assistance.

10. How much does it cost to fix the U0076 code in a 2018 GMC Sierra?

The cost of fixing the U0076 code can vary depending on the underlying issue and the labor rates of the repair shop. It's advisable to get a diagnostic assessment to determine the exact cost.