U1818 2017 Chevrolet Silverado Code - Lost Communication with Engine Control Module on Powertrain Expansion Communication Bus
Quick Answer
Devices connected to the powertrain high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control Module circuit poor electrical connection. 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
- U1818 2017 Chevrolet Silverado indicates Lost Communication with Engine Control Module on Powertrain Expansion Communication Bus.
- Common causes
- Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control Module circuit poor electrical connection.
- 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 U1818 2017 Chevrolet Silverado Description
The Diagnostic Trouble Code (DTC) will be set when a supervised periodic message that includes the transmitter device availability has not been received.
What are the Possible Causes of the DTC U1818 2017 Chevrolet Silverado?
- Faulty Engine Control Module (ECM)
- Engine Control Module harness is open or shorted
- Engine Control Module circuit poor electrical connection
How to Fix the DTC U1818 2017 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 U1818 2017 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.
Need more information about the U1818 2017 Chevrolet Silverado code?
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Frequently Asked Questions about U1818 2017 Chevrolet Silverado Code
1. What are common symptoms of OBDII code U1818 on a 2017 Chevrolet Silverado?
- Common symptoms include engine performance issues, stalling, rough idling, and the illumination of the check engine light.
2. What does the OBDII code U1818 indicating "Lost Communication with Engine Control Module on Powertrain Expansion Communication Bus" mean?
- This code suggests a communication problem between the engine control module and other modules on the powertrain expansion communication bus.
3. What are some possible causes of OBDII code U1818 on a 2017 Chevrolet Silverado?
- Potential causes include faulty wiring or connectors, a malfunctioning engine control module, issues with the powertrain expansion communication bus, or a software glitch.
4. How can I diagnose the issue related to OBDII code U1818 on my 2017 Chevrolet Silverado?
- Diagnosing the problem typically involves checking the wiring and connectors for damage, ensuring proper connections, and using a diagnostic tool to scan for communication errors.
5. What are some tips for repairing OBDII code U1818 on a 2017 Chevrolet Silverado?
- Repair tips may include repairing or replacing damaged wiring, ensuring secure connections, resetting the engine control module, or updating software if necessary.
6. Can I continue driving my 2017 Chevrolet Silverado with the U1818 code present?
- It is not recommended to continue driving with this code present, as it may lead to further issues and potential damage to the vehicle's components.
7. How much does it typically cost to repair OBDII code U1818 on a 2017 Chevrolet Silverado?
- The cost of repair can vary depending on the underlying cause, but it may range from a simple wiring repair cost to a more expensive engine control module replacement.
8. Will resetting the check engine light resolve the U1818 code issue on my 2017 Chevrolet Silverado?
- Resetting the check engine light may temporarily remove the code, but it will not fix the underlying communication problem causing the U1818 code.
9. Are there any recalls or technical service bulletins related to OBDII code U1818 for the 2017 Chevrolet Silverado?
- It is advisable to check with a Chevrolet dealership or online resources to see if there are any relevant recalls or technical service bulletins related to this code for your specific vehicle.
10. Can a DIY enthusiast fix the U1818 code issue on a 2017 Chevrolet Silverado, or is it best left to professionals?
- While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing communication issues like the U1818 code may require specialized tools and expertise best handled by a professional mechanic.
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