U007B 2017 GMC Sierra Code - Control Module Communication High 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
- U007B 2017 GMC Sierra indicates Control Module Communication High 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 U007B 2017 GMC Sierra Description
What are the Possible Causes of the DTC U007B 2017 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 U007B 2017 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 U007B 2017 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 U007B 2017 GMC Sierra code?
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Frequently Asked Questions about U007B 2017 GMC Sierra Code
1. What are the common symptoms of OBDII code U007B in a 2017 GMC Sierra?
The common symptoms include issues with the vehicle's communication network, such as warning lights on the dashboard, erratic behavior of electronic components, and difficulty starting the vehicle.
2. What does the U007B code "Control Module Communication High Speed Extension CAN Bus Off" mean for a 2017 GMC Sierra?
This code indicates a communication problem within the high-speed extension Controller Area Network (CAN) bus network in the vehicle, specifically related to the control modules.
3. What are the possible causes of the U007B code in a 2017 GMC Sierra?
Possible causes include faulty control modules, damaged wiring or connectors in the CAN bus network, software glitches, low voltage issues, or a malfunctioning powertrain control module (PCM).
4. How can I diagnose the U007B code in a 2017 GMC Sierra?
Diagnosing this code requires using a professional OBDII scanner to read the fault codes, checking the CAN bus network for continuity, inspecting the control modules for damage, and testing the voltage levels in the system.
5. Can I drive my 2017 GMC Sierra with the U007B code present?
It is not recommended to drive the vehicle with this code present, as it may lead to further electrical issues or potential safety hazards. It's best to address the underlying problem before operating the vehicle.
6. How can I repair the U007B code in a 2017 GMC Sierra?
Repairing this code may involve replacing faulty control modules, repairing damaged wiring or connectors, updating software, addressing voltage issues, or consulting with a professional mechanic for further assistance.
7. Is the U007B code covered under any warranties for a 2017 GMC Sierra?
Depending on the vehicle's warranty status and the specific circumstances, the repair for this code may be covered under the manufacturer's warranty or extended warranty. It's advisable to check with the dealership or warranty provider.
8. Are there any recalls related to the U007B code for a 2017 GMC Sierra?
Recalls related to this specific code may vary, so it's recommended to check with the manufacturer or the National Highway Traffic Safety Administration (NHTSA) to see if there are any relevant recalls for your vehicle.
9. Can a DIY enthusiast fix the U007B code issue in a 2017 GMC Sierra?
While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing complex communication network issues like the U007B code may require specialized tools and expertise. It's advisable to consult with a professional mechanic for proper repair.
10. How can I prevent the U007B code from appearing in my 2017 GMC Sierra in the future?
Regular maintenance, timely software updates, careful handling of electrical components, and addressing any warning signs promptly can help prevent the recurrence of the U007B code in your GMC Sierra.
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