AutoCodes – GMC – U0075 2014 GMC Sierra

U0075 2014 GMC Sierra Code - Control Module Communication Object Detection 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: U0075 2014 GMC Sierra indicates Control Module Communication Object Detection 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 177

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 19, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0075 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 U0075 2014 GMC Sierra - Control Module Communication Object Detection CAN Bus Off - AutoCodes.com — U0075 2014 GMC Sierra Code - Control Module Communication Object Detection CAN Bus Off

What does this mean?

What are the Possible Causes of the DTC U0075 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 U0075 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 U0075 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 U0075 2014 GMC Sierra code?

Need more information on how to fix the U0075 2014 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 U0075 2014 GMC Sierra Code

1. What does the OBDII code U0075 on a 2014 GMC Sierra mean?

The code U0075 indicates a Control Module Communication Object Detection CAN Bus Off error on your 2014 GMC Sierra.

2. What are the common symptoms of the U0075 code in a 2014 GMC Sierra?

Common symptoms of the U0075 code may include issues with the vehicle's communication network, such as warning lights on the dashboard, loss of communication with certain modules, or difficulty starting the vehicle.

3. What are the potential causes of the U0075 code in a 2014 GMC Sierra?

Possible causes of the U0075 code include damaged wiring or connectors in the CAN bus system, faulty control modules, software issues, or a weak battery causing voltage fluctuations.

4. How can I diagnose the U0075 code on my 2014 GMC Sierra?

Diagnosing the U0075 code typically involves using a diagnostic scanner to retrieve the specific module(s) that are not communicating properly and inspecting the wiring, connectors, and control modules associated with the affected system.

5. Is it safe to drive with the U0075 code present in a 2014 GMC Sierra?

It is generally not recommended to drive with the U0075 code active, as it can indicate underlying communication issues that may affect the vehicle's performance, safety features, or drivability.

6. Can I repair the U0075 code in a 2014 GMC Sierra myself?

Repairing the U0075 code may require advanced diagnostic tools and knowledge of automotive electronics. It is recommended to consult a professional mechanic or dealership for accurate diagnosis and repair.

7. How much does it cost to fix the U0075 code on a 2014 GMC Sierra?

The cost of repairing the U0075 code can vary depending on the specific cause of the issue. It is advisable to obtain a diagnosis from a qualified technician to determine the exact repair cost.

8. Are there any common DIY fixes for the U0075 code in a 2014 GMC Sierra?

Common DIY fixes for the U0075 code may include checking and cleaning the CAN bus connections, inspecting for damaged wiring, or ensuring the battery is in good condition to prevent voltage fluctuations.

9. Will resetting the OBDII system clear the U0075 code on a 2014 GMC Sierra?

Resetting the OBDII system may temporarily clear the U0075 code, but if the underlying issue causing the code is not addressed, it is likely to reappear. It is essential to diagnose and repair the root cause of the problem.

10. How can I prevent the U0075 code from appearing in my 2014 GMC Sierra in the future?

To prevent the U0075 code from reoccurring, it is crucial to perform regular maintenance, ensure the vehicle's electrical system is in good condition, and address any communication issues promptly to avoid further damage to the control modules.