AutoCodes – GMC – U0076 2015 GMC Sierra

U0076 2015 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 2015 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 232

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 2015 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 2015 GMC Sierra - Control Module Communication Powertrain Sensor CAN Bus Off - AutoCodes.com — U0076 2015 GMC Sierra Code - Control Module Communication Powertrain Sensor CAN Bus Off

What does this mean?

What are the Possible Causes of the DTC U0076 2015 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 2015 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 2015 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 2015 GMC Sierra code?

Need more information on how to fix the U0076 2015 GMC Sierra code? Get Access to Factory Service Manuals

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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 2015 GMC Sierra Code

1. What does the OBDII code U0076 mean on a 2015 GMC Sierra?

U0076 indicates a communication issue on the Controller Area Network (CAN) bus, specifically involving the powertrain sensor communication circuit.

2. What are the common symptoms of the U0076 code in a 2015 GMC Sierra?

Symptoms may include the check engine light turning on, reduced engine performance, transmission issues, or failure of certain systems to communicate properly.

3. What causes the U0076 code to appear?

Common causes include damaged or corroded wiring, faulty control modules, a failed powertrain sensor, or issues with the CAN bus network connections.

4. How do I diagnose the U0076 code on my 2015 GMC Sierra?

Start by inspecting the wiring and connectors for damage or corrosion, checking for other related codes, and testing the CAN bus network for proper voltage and continuity.

5. Can I drive my 2015 GMC Sierra with the U0076 code active?

Driving with this code is not recommended as it can affect critical systems like the engine or transmission, leading to reduced performance or further damage.

6. How do I fix the U0076 code on a 2015 GMC Sierra?

Repairs may involve replacing damaged wiring, cleaning corroded connectors, updating or reprogramming the control module software, or replacing a faulty module or sensor.

7. How much does it cost to repair the U0076 code on a 2015 GMC Sierra?

Repair costs can vary widely, ranging from $100 for minor wiring repairs to $1,000 or more if a module needs replacement or reprogramming.

8. Can a faulty battery cause the U0076 code?

Yes, a weak or failing battery can cause voltage issues on the CAN bus, potentially triggering the U0076 code.

9. Do I need to reprogram the control module to fix the U0076 code?

In some cases, reprogramming or updating the control module software may be required if the issue is related to outdated software or module errors.

10. What tools are needed to troubleshoot the U0076 code on a 2015 GMC Sierra?

Youâ€™ll need an OBDII scanner with CAN bus diagnostics, a multimeter for testing continuity and voltage, and possibly access to the vehicleâ€™s service manual for wiring diagrams.