U1814 2017 GMC Sierra Code - Powertrain Wake-Up Communication Circuit
Quick Answer
The U1814 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the Powertrain Wake-Up Communication Circuit. Common causes include Corroded or damaged wiring, Loose or poor connections, Faulty powertrain control module. 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
- U1814 2017 GMC Sierra indicates Powertrain Wake-Up Communication Circuit.
- Common causes
- Common causes include Corroded or damaged wiring, Loose or poor connections, Faulty powertrain control module.
- 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 U1814 2017 GMC Sierra Description
The U1814 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the Powertrain Wake-Up Communication Circuit. This code indicates a communication issue within the powertrain control module (PCM) or between the PCM and other modules in the vehicle. The powertrain control module is responsible for controlling various aspects of the engine and transmission, so any communication problems can have significant effects on the vehicle's performance.
Common Causes of U1814 2017 GMC Sierra
- Corroded or damaged wiring
- Loose or poor connections
- Faulty powertrain control module
- Issues with other modules communicating with the PCM
- Water damage or exposure to moisture
Symptoms of U1814 2017 GMC Sierra
- Poor engine performance
- Rough idling
- Stalling
- Difficulty starting the vehicle
How to Fix U1814 2017 GMC Sierra
- Begin by inspecting the wiring and connectors related to the powertrain communication circuit. Look for any signs of corrosion, damage, or loose connections. Repair or replace any faulty wiring or connectors.
- Check the powertrain control module for any signs of damage or malfunction. If necessary, replace the PCM with a new unit.
- Ensure that all modules in the vehicle are communicating properly with the PCM. Address any communication issues between modules.
- Clear the DTC from the vehicle's memory using a diagnostic scan tool.
- Test drive the vehicle to ensure that the issue has been resolved and that all systems are functioning properly.
Cost to Fix U1814 2017 GMC Sierra
The cost of repairing a U1814 DTC can vary depending on the specific cause of the issue. In general, you can expect to pay anywhere from $100 to $500 for parts and labor. Keep in mind that diagnostic time and labor rates can vary depending on the location and the specific repair shop. It's advisable to check with local auto repair shops for a more accurate estimate based on your vehicle make and model.
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Frequently Asked Questions about U1814 2017 GMC Sierra Code
1. What does the OBDII code U1814 mean on a 2017 GMC Sierra?
The code U1814 indicates a fault in the Powertrain Wake-Up Communication Circuit, which is responsible for ensuring proper communication between control modules when the vehicle is started.
2. What are the common symptoms of the U1814 code on a 2017 GMC Sierra?
Symptoms may include a no-start condition, difficulty starting the vehicle, illuminated check engine light, or other warning lights on the dashboard.
3. What causes the U1814 code to appear on a 2017 GMC Sierra?
Common causes include faulty wiring or connectors in the wake-up communication circuit, a malfunctioning control module, or an issue with the battery or power supply.
4. Can a low battery cause the U1814 code on a 2017 GMC Sierra?
Yes, a weak or low battery can disrupt the powertrain wake-up circuit and trigger the U1814 code.
5. How do I diagnose the U1814 code on my 2017 GMC Sierra?
Start by inspecting the wiring and connectors for damage or corrosion, checking the battery voltage, and using a scan tool to monitor communication between control modules.
6. Is the U1814 code serious on a 2017 GMC Sierra?
Yes, it can be serious, as it may prevent the vehicle from starting or cause other powertrain communication issues.
7. How do I fix the U1814 code on a 2017 GMC Sierra?
Repairs may include repairing or replacing damaged wiring, cleaning or reconnecting corroded connectors, or replacing a faulty control module if necessary.
8. Can I drive my 2017 GMC Sierra with the U1814 code?
Driving may be possible, but it is not recommended as the issue can worsen or result in a no-start condition.
9. How much does it cost to fix the U1814 code on a 2017 GMC Sierra?
Repair costs vary depending on the issue but may range from $100 for simple wiring repairs to over $1,000 if a control module needs replacement.
10. Can a software update fix the U1814 code on a 2017 GMC Sierra?
In some cases, a software update for the affected control module may resolve the issue, but a proper diagnosis is needed to determine if this is the solution.
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