U1817 2014 Chevrolet Silverado Code - Lost Communication with Hybrid Powertrain Control Module on Powertrain Expansion CAN Bus Malfunction
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 Starter/Generator Control Module, Starter/Generator Control Module harness is open or shorted, Starter/Generator 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
- U1817 2014 Chevrolet Silverado indicates Lost Communication with Hybrid Powertrain Control Module on Powertrain Expansion CAN Bus Malfunction.
- Common causes
- Common causes include Faulty Starter/Generator Control Module, Starter/Generator Control Module harness is open or shorted, Starter/Generator 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 U1817 2014 Chevrolet Silverado Description
The Motor Control Module and the Hybrid Powertrain Control Module are all internal to the Starter/Generator Control Module. All circuits to the Hybrid Powertrain Control Module are also internal to the Starter/Generator Control Module.
Communication diagnostics for the serial data, including device power and ground as well as the wakeup circuits for the Motor Control Module and the Hybrid Powertrain Control Module are all diagnosed from external sources only to the Starter/Generator Control Module connector because any circuit fault condition within the Starter/Generator Control Module will cause a complete replacement.
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 U1817 2014 Chevrolet Silverado?
- Faulty Starter/Generator Control Module
- Starter/Generator Control Module harness is open or shorted
- Starter/Generator Control Module circuit poor electrical connection
How to Fix the DTC U1817 2014 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 U1817 2014 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 U1817 2014 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code U1817 on a 2014 Chevrolet Silverado?
The common symptoms include the Check Engine Light (CEL) illuminating, reduced fuel efficiency, drivability issues, and potential loss of communication with the hybrid powertrain control module.
2. What could cause the OBDII code U1817 on a 2014 Chevrolet Silverado?
The code U1817 typically indicates a malfunction in the Powertrain Expansion CAN Bus communication related to the hybrid powertrain control module. Potential causes may include wiring issues, a faulty control module, or a communication network problem.
3. How can I diagnose the U1817 code on my 2014 Chevrolet Silverado?
Diagnosing the U1817 code involves using a diagnostic scanner to retrieve the specific details of the code. Additionally, a thorough inspection of the wiring, connectors, and components related to the hybrid powertrain control module is necessary to identify the root cause of the communication malfunction.
4. What are the repair options for fixing the U1817 code on a 2014 Chevrolet Silverado?
Repair options for the U1817 code may involve repairing or replacing damaged wiring, connectors, or components in the Powertrain Expansion CAN Bus system. It is recommended to consult a professional mechanic or dealership for accurate diagnosis and repair.
5. Can I drive my 2014 Chevrolet Silverado with the U1817 code present?
It is not advisable to drive your vehicle with the U1817 code present, as it may indicate potential issues with the hybrid powertrain control module communication. Continuing to drive the vehicle without addressing the problem could lead to further damage or drivability issues.
6. Is the U1817 code specific to the hybrid powertrain system in a 2014 Chevrolet Silverado?
Yes, the U1817 code specifically relates to a communication malfunction with the hybrid powertrain control module on the Powertrain Expansion CAN Bus in a 2014 Chevrolet Silverado equipped with a hybrid powertrain system.
7. How urgent is it to address the U1817 code on a 2014 Chevrolet Silverado?
It is recommended to address the U1817 code promptly to prevent potential further damage to the hybrid powertrain system and ensure the vehicle's optimal performance and safety.
8. Can a DIY enthusiast fix the U1817 code issue on a 2014 Chevrolet Silverado?
While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing the U1817 code related to the hybrid powertrain control module may require specialized knowledge and equipment. It is recommended to seek professional assistance for an accurate diagnosis and repair.
9. Are there any recalls or technical service bulletins related to the U1817 code on a 2014 Chevrolet Silverado?
It is advisable to check with the manufacturer or authorized dealerships for any recalls or technical service bulletins related to the U1817 code on a 2014 Chevrolet Silverado. Manufacturers may provide guidance or assistance for addressing specific issues related to this code.
10. How can I prevent the U1817 code from reoccurring on my 2014 Chevrolet Silverado?
To prevent the U1817 code from reoccurring, regular maintenance and inspections of the hybrid powertrain system, including the Powertrain Expansion CAN Bus components, are essential. Ensuring proper wiring connections and addressing any communication issues promptly can help prevent the code from reappearing.
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