AutoCodes – GMC – U0076 2014 GMC Sierra

U0076 2014 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 2014 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 183

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 2014 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 2014 GMC Sierra - Control Module Communication Powertrain Sensor CAN Bus Off - AutoCodes.com — U0076 2014 GMC Sierra Code - Control Module Communication Powertrain Sensor CAN Bus Off

What does this mean?

What are the Possible Causes of the DTC U0076 2014 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 2014 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 2014 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 2014 GMC Sierra code?

Need more information on how to fix the U0076 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 2014 GMC Sierra Code

What does the OBDII code U0076 mean for a 2014 GMC Sierra?

The U0076 code indicates a communication issue between the powertrain control module (PCM) and the controller area network (CAN) bus, specifically that the CAN bus is offline.

What are common symptoms of the U0076 code?

Symptoms may include engine performance issues, warning lights on the dashboard, difficulty starting the vehicle, or a complete loss of communication with various vehicle modules.

What could cause the U0076 code to trigger?

Common causes include damaged wiring or connectors in the CAN bus system, faulty control modules, poor grounds, or issues with the vehicle's battery or charging system.

How can I diagnose the U0076 code?

Start by checking the vehicle's battery and connections for issues, then inspect the wiring and connectors for damage. Use a scan tool to see if other codes are present, which can help pinpoint the problem.

What repairs are commonly needed to fix the U0076 code?

Repairs may involve repairing or replacing damaged wiring or connectors, reprogramming or replacing the affected control module, or fixing any related electrical issues within the CAN bus system.

Can I drive my 2014 GMC Sierra with the U0076 code?

While it may be possible to drive the vehicle, it is not recommended, as it can lead to further issues or safety concerns due to compromised engine performance or stability.

How can I prevent the U0076 code from occurring in the future?

Regularly inspect wiring and connectors for wear and tear, ensure good battery health, and address any electrical issues promptly to maintain a reliable communication network in the vehicle.

Is the U0076 code serious?

Yes, the U0076 code can be serious as it indicates a loss of communication in critical systems, potentially leading to performance issues or safety concerns if not addressed.

What tools do I need to troubleshoot the U0076 code?

You will need an OBDII scanner or code reader to retrieve the code, a multimeter for testing electrical connections, and possibly specialized tools for inspecting or repairing wiring and connectors.