AutoCodes – GMC – U007C 2016 GMC Sierra

U007C 2016 GMC Sierra Code - Control Module Communication High Speed Extension CAN Bus 2 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: U007C 2016 GMC Sierra indicates Control Module Communication High Speed Extension CAN Bus 2 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 277

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 U007C 2016 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 U007C 2016 GMC Sierra - Control Module Communication High Speed Extension CAN Bus 2 Off - AutoCodes.com — U007C 2016 GMC Sierra Code - Control Module Communication High Speed Extension CAN Bus 2 Off

What does this mean?

What are the Possible Causes of the DTC U007C 2016 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 U007C 2016 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 U007C 2016 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 U007C 2016 GMC Sierra code?

Need more information on how to fix the U007C 2016 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 U007C 2016 GMC Sierra Code

1. What are common symptoms of OBDII code U007C in a 2016 GMC Sierra?

- Common symptoms include issues with the vehicle's communication systems, such as intermittent or complete loss of communication with various control modules.

2. What does the OBDII code U007C for a 2016 GMC Sierra indicate?

- The code U007C indicates a problem with the Control Module Communication High Speed Extension CAN Bus 2 Off in the vehicle.

3. What are possible causes of OBDII code U007C in a 2016 GMC Sierra?

- Possible causes include damaged wiring, loose connections, faulty control modules, or issues with the CAN bus communication network within the vehicle.

4. How can I diagnose the OBDII code U007C in my 2016 GMC Sierra?

- Diagnosis typically involves checking for loose or damaged wiring, inspecting control modules for faults, and testing the CAN bus network for communication issues using a diagnostic scanner.

5. What are the repair options for OBDII code U007C in a 2016 GMC Sierra?

- Repair options may include repairing or replacing damaged wiring, ensuring secure connections, replacing faulty control modules, and addressing any issues with the CAN bus network.

6. Can I drive my 2016 GMC Sierra with OBDII code U007C?

- It is not recommended to drive the vehicle with unresolved U007C code issues, as it may lead to further communication problems and potential safety hazards.

7. How much does it typically cost to repair OBDII code U007C in a 2016 GMC Sierra?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from a simple wiring repair cost to the replacement of control modules, resulting in a higher repair bill.

8. Are there any DIY tips for addressing OBDII code U007C in a 2016 GMC Sierra?

- DIY tips may include checking and securing wiring connections, visually inspecting control modules for damage, and resetting the code using a diagnostic scanner after potential repairs.

9. How urgent is it to address OBDII code U007C in a 2016 GMC Sierra?

- It is recommended to address the U007C code promptly to prevent further communication problems and ensure the vehicle's systems are functioning properly.

10. Can a mechanic easily resolve OBDII code U007C in a 2016 GMC Sierra?

- A qualified mechanic with experience in diagnosing and repairing communication system issues should be able to efficiently resolve the U007C code in a 2016 GMC Sierra.