U007B 2017 Chevrolet Silverado Code - Control Module Communication High Speed Extension CAN Bus Off
Quick Answer
The U007B code for a 2017 Chevrolet Silverado indicates a problem with the Control Module Communication High Speed Extension CAN Bus being off. Common causes include Faulty control module, Loose or corroded wiring connections, Electrical interference from aftermarket devices. 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 Chevrolet Silverado indicates Control Module Communication High Speed Extension CAN Bus Off.
- Common causes
- Common causes include Faulty control module, Loose or corroded wiring connections, Electrical interference from aftermarket devices.
- 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 U007B 2017 Chevrolet Silverado Description
The U007B code for a 2017 Chevrolet Silverado indicates a problem with the Control Module Communication High Speed Extension CAN Bus being off. The Controller Area Network (CAN) bus is a communication system used in vehicles to allow various control modules to communicate with each other. When this code is triggered, it means that there is a disruption in the high-speed communication between modules, which can lead to issues with the vehicle's performance and functionality.
Common Causes of U007B 2017 Chevrolet Silverado
- Faulty control module
- Loose or corroded wiring connections
- Electrical interference from aftermarket devices
- Water damage to control module
- Software malfunction in control module
Symptoms of U007B 2017 Chevrolet Silverado
- Check engine light illuminated
- Vehicle stalling or hesitation
- Loss of power steering or power brakes
- Issues with shifting gears
- Inability to start the vehicle
How to Fix U007B 2017 Chevrolet Silverado
- Begin by conducting a thorough inspection of the wiring and connections related to the Control Module Communication High Speed Extension CAN Bus.
- Check for any signs of damage, corrosion, or loose connections, and repair or replace as needed.
- If wiring is intact, perform a diagnostic scan to identify the specific module causing the communication issue.
- Replace any faulty control modules and reprogram them to ensure proper communication.
- Clear the diagnostic trouble codes and test drive the vehicle to confirm that the issue has been resolved.
Cost to Fix U007B 2017 Chevrolet Silverado
The cost of repairing a U007B code on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue. On average, the repair costs for this type of problem can range from $200 to $500, including parts and labor. However, it's essential to consider that diagnostic time and labor rates can impact the final cost, so it's advisable to consult with a professional mechanic for a more accurate estimate.
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Frequently Asked Questions about U007B 2017 Chevrolet Silverado Code
1. What does OBDII code U007B mean on a 2017 Chevrolet Silverado?
U007B indicates a communication issue on the High-Speed CAN (Controller Area Network) bus, specifically that the bus is "off" or not functioning properly.
2. What are common symptoms of the U007B code in a 2017 Chevrolet Silverado?
Symptoms may include warning lights on the dashboard, such as the check engine light, loss of communication with certain modules, or malfunctioning systems like ABS or traction control.
3. What causes the U007B code to appear in a 2017 Chevrolet Silverado?
Common causes include a faulty control module, damaged or corroded wiring, loose connectors, or issues with the CAN bus network itself.
4. Can a weak battery cause the U007B code in my Silverado?
Yes, a weak or failing battery can lead to communication errors on the CAN bus, potentially triggering the U007B code.
5. How do I diagnose the U007B code on a 2017 Chevrolet Silverado?
Start by checking the battery voltage and inspecting the CAN bus wiring and connectors for damage or corrosion. A scan tool can help identify which module is not communicating.
6. Is the U007B code serious, and can I still drive my Silverado?
While the truck may still be drivable, the code indicates communication issues that could affect critical systems, so it’s best to address the problem promptly.
7. What should I inspect first for the U007B code on a 2017 Silverado?
Begin by inspecting the CAN bus wiring, connectors, and battery condition. Check for any loose connections or visible damage.
8. Can a faulty control module trigger the U007B code in my Silverado?
Yes, a malfunctioning control module can disrupt communication on the CAN bus and cause the U007B code.
9. How much does it cost to repair the U007B code on a 2017 Chevrolet Silverado?
Repair costs vary depending on the cause. Simple fixes like repairing wiring or connectors may cost under $100, while replacing a control module could cost several hundred dollars.
10. Can clearing the U007B code with a scan tool fix the problem?
Clearing the code may temporarily remove it, but if the underlying issue is not resolved, the code will likely return.
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