U007C 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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.
Code U007C 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC U007C 2018 Chevrolet Silverado?
- 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 2018 Chevrolet Silverado?
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 2018 Chevrolet Silverado 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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Frequently Asked Questions about U007C 2018 Chevrolet Silverado Code
1. What does the OBDII code U007C mean on a 2018 Chevrolet Silverado?
U007C indicates a communication issue on the High-Speed CAN Bus 2, specifically when a control module has lost communication or detected the bus is off.
2. What are the common symptoms of code U007C on a 2018 Chevrolet Silverado?
Symptoms may include dashboard warning lights (like the check engine light), erratic operation of electronic systems, failure of certain modules to respond, or complete vehicle stalling.
3. What causes the U007C code on a 2018 Chevrolet Silverado?
Possible causes include damaged wiring or connectors in the CAN Bus circuit, a faulty control module, a blown fuse, or an issue with the power or ground supply to the modules.
4. Can I still drive my 2018 Chevrolet Silverado with a U007C code?
It may be risky to drive as the code can affect critical systems like transmission and braking. It’s best to address the issue promptly to avoid further damage or unsafe driving conditions.
5. How can I diagnose the U007C code on my Silverado?
Start by inspecting the CAN Bus wiring and connectors for damage or corrosion. Use a scan tool capable of reading live data to check communication between modules and test for power and ground at the affected module.
6. Which modules are typically involved with the U007C code?
Modules connected to the High-Speed CAN Bus 2, such as the Engine Control Module (ECM), Transmission Control Module (TCM), or Body Control Module (BCM), could be involved.
7. What repairs fix the U007C code on a 2018 Chevrolet Silverado?
Repairs may include repairing or replacing damaged wiring or connectors, replacing a faulty control module, checking and replacing blown fuses, or reprogramming a module if necessary.
8. How much does it cost to fix the U007C code on a 2018 Chevrolet Silverado?
Repair costs can vary widely depending on the root cause. Simple wiring repairs may cost $100-$300, while module replacement or reprogramming could cost $500 or more.
9. Can a weak battery cause the U007C code?
Yes, a weak or failing battery can cause low voltage, disrupting communication on the CAN Bus and triggering the U007C code.
10. Will clearing the U007C code fix the issue?
Clearing the code without addressing the root cause will only temporarily remove it. The issue must be properly diagnosed and repaired for the code to stay cleared.
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