AutoCodes – GMC – U007D 2015 GMC Sierra

U007D 2015 GMC Sierra Code - Control Module Communication Low Speed Extension 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: U007D 2015 GMC Sierra indicates Control Module Communication Low Speed Extension 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 184

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 U007D 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 U007D 2015 GMC Sierra - Control Module Communication Low Speed Extension CAN Bus Off - AutoCodes.com — U007D 2015 GMC Sierra Code - Control Module Communication Low Speed Extension CAN Bus Off

What does this mean?

What are the Possible Causes of the DTC U007D 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 U007D 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 U007D 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 U007D 2015 GMC Sierra code?

Need more information on how to fix the U007D 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 U007D 2015 GMC Sierra Code

1. What does the OBDII code U007D mean on a 2015 GMC Sierra?

It indicates a communication issue on the low-speed CAN (Controller Area Network) bus, specifically that the bus is "off," meaning data transmission is disrupted.

2. What are the common symptoms of a U007D code on a 2015 GMC Sierra?

Symptoms may include illuminated warning lights (e.g., check engine light), loss of communication with certain modules, non-functioning electrical components, or intermittent vehicle performance issues.

3. What causes the U007D code on a 2015 GMC Sierra?

Common causes include a faulty control module, damaged or corroded wiring, a short or open in the low-speed CAN circuit, or a bad connection at a module or bus line.

4. Is it safe to drive a 2015 GMC Sierra with a U007D code?

While the vehicle may still be drivable, the code can indicate critical communication issues, potentially leading to safety concerns. It's best to address the problem promptly.

5. How do you diagnose the U007D code on a 2015 GMC Sierra?

Diagnosis involves checking for other related codes, inspecting the wiring and connections on the low-speed CAN bus, and using a scan tool to monitor network communication.

6. Can a faulty battery cause the U007D code on a 2015 GMC Sierra?

Yes, a weak or failing battery or charging system can cause communication problems, including triggering the U007D code.

7. What modules are typically affected by the U007D code on a 2015 GMC Sierra?

Modules connected to the low-speed CAN bus, such as the Body Control Module (BCM) or other auxiliary control units, may be affected.

8. How can wiring issues trigger the U007D code on a 2015 GMC Sierra?

Damaged, corroded, or loose wiring can disrupt the communication on the low-speed CAN bus, leading to the code being set.

9. What repairs are commonly needed to fix the U007D code on a 2015 GMC Sierra?

Repairs may include fixing or replacing damaged wiring, cleaning or securing loose connections, replacing a faulty module, or addressing battery or alternator issues.

10. Can clearing the U007D code solve the problem on a 2015 GMC Sierra?

Clearing the code may temporarily turn off the warning light but wonâ€™t fix the underlying issue. Proper diagnosis and repair are necessary to prevent the code from returning.