U007D GMC 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 GMC 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.
Code U007D GMC Description
What are the Possible Causes of the DTC U007D GMC?
- 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 GMC?
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 GMC 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.
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Information for Specific GMC Models
- U007D 2014 GMC Sierra — Control Module Communication Low Speed Extension CAN Bus Off
- U007D 2015 GMC Sierra — Control Module Communication Low Speed Extension CAN Bus Off
- U007D 2016 GMC Sierra — Control Module Communication Low Speed Extension CAN Bus Off
- U007D 2017 GMC Sierra — Control Module Communication Low Speed Extension CAN Bus Off
- U007D 2018 GMC Sierra — Control Module Communication Low Speed Extension CAN Bus Off
Frequently Asked Questions about U007D GMC Code
What does the OBDII code U007D mean on a GMC vehicle?
The code U007D indicates an issue with the Control Module Communication Low Speed Extension CAN Bus, specifically that it is "off" or not functioning properly.
What are common symptoms of the U007D code in a GMC?
Symptoms may include warning lights on the dashboard, such as the check engine light, reduced vehicle performance, communication errors between modules, or malfunctioning electronic systems.
What causes the U007D code to appear in a GMC?
Common causes include damaged or corroded wiring, a faulty control module, a low-speed CAN bus circuit failure, or a dead vehicle battery.
Can a weak battery trigger the U007D code in a GMC?
Yes, a weak or failing battery can cause low voltage, which may disrupt CAN bus communication and trigger the U007D code.
How do you diagnose the U007D code in a GMC vehicle?
Diagnosis typically involves using a scan tool to check for related codes, inspecting the CAN bus wiring for damage, and testing the vehicle’s battery and control modules.
Is it safe to drive a GMC with the U007D code active?
It is not recommended to drive with this code active, as it may affect critical vehicle systems and lead to unsafe driving conditions.
How can the U007D code be fixed in a GMC?
Repairs may involve replacing damaged wiring, repairing or replacing a faulty control module, or addressing any power supply issues like a weak battery.
What tools are needed to troubleshoot the U007D code on a GMC?
You’ll need an OBDII scan tool, a multimeter for checking electrical connections, and possibly a wiring diagram for the specific vehicle.
Does the U007D code require reprogramming any control modules?
In some cases, resolving the issue may require reprogramming or reinitializing control modules to restore proper communication.
Can a software update fix the U007D code in a GMC?
If the code is due to outdated software causing communication errors, a software update from the manufacturer may resolve the issue.
Discuss the causes and fixes for U007D GMC OBDII Code
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