U1814 GMC Code - Powertrain Wake-Up Communication Circuit
Quick Answer
The Body Control Module (BCM) activates the ignition circuit, when the ignition key is in ACC, ON or START. Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body 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
- U1814 GMC indicates Powertrain Wake-Up Communication Circuit.
- Common causes
- Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body 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 U1814 GMC Description
What are the Possible Causes of the DTC U1814 GMC?
- Faulty Body Control Module (BCM)
- Body Control Module harness is open or shorted
- Body Control Module circuit poor electrical connection
How to Fix the DTC U1814 GMC?
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 U1814 GMC 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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Information for Specific GMC Models
- U1814 2014 GMC Sierra — Powertrain Wake-Up Communication Circuit
- U1814 2015 GMC Sierra — Powertrain Wake-Up Communication Circuit
- U1814 2016 GMC Sierra — Powertrain Wake-Up Communication Circuit
- U1814 2017 GMC Sierra — Powertrain Wake-Up Communication Circuit
- U1814 2018 GMC Sierra — Powertrain Wake-Up Communication Circuit
Frequently Asked Questions about U1814 GMC Code
1. What are the common symptoms of OBDII code U1814 GMC?
The common symptoms of OBDII code U1814 GMC include difficulty starting the vehicle, intermittent issues with powertrain components, and the illumination of the check engine light.
2. What does the OBDII code U1814 GMC indicate?
OBDII code U1814 for GMC refers to a Powertrain Wake-Up Communication Circuit fault. It means there is a problem with the communication circuit responsible for waking up the powertrain control module.
3. What are the possible causes of OBDII code U1814 GMC?
Possible causes of OBDII code U1814 GMC include faulty wiring or connectors in the wake-up communication circuit, issues with the powertrain control module, or a malfunction in the wake-up communication module itself.
4. How serious is OBDII code U1814 GMC?
OBDII code U1814 GMC can cause starting issues and intermittent powertrain problems. While it may not immediately affect the drivability of the vehicle, it is important to address this issue promptly to prevent further complications.
5. How can OBDII code U1814 GMC be diagnosed?
Diagnosing OBDII code U1814 GMC typically involves using a diagnostic scanner to retrieve the code and performing a thorough inspection of the wake-up communication circuit, including wiring, connectors, and modules, to identify the root cause of the issue.
6. Can I repair OBDII code U1814 GMC myself?
Repairing OBDII code U1814 GMC may require advanced automotive diagnostic skills and knowledge of electrical systems. If you are comfortable working with vehicle electronics, you may be able to address this issue; otherwise, it is recommended to seek professional help.
7. Is it safe to drive with OBDII code U1814 GMC active?
While driving with OBDII code U1814 GMC active may not immediately pose a safety risk, it is advisable to address the underlying issue promptly to prevent potential powertrain malfunctions and ensure the overall reliability of the vehicle.
8. How much does it cost to repair OBDII code U1814 GMC?
The cost of repairing OBDII code U1814 GMC can vary depending on the underlying cause of the issue, the extent of the repairs needed, and the labor rates of the service provider. It is recommended to obtain quotes from different automotive professionals for an accurate estimate.
9. Can OBDII code U1814 GMC cause other problems in the vehicle?
If left unaddressed, OBDII code U1814 GMC can potentially lead to further electrical issues within the powertrain system, affecting the overall performance and drivability of the vehicle. It is important to address this code promptly to prevent additional problems.
10. How can I prevent OBDII code U1814 GMC from recurring?
To prevent OBDII code U1814 GMC from recurring, ensure regular maintenance checks on the vehicle's electrical system, including inspecting wiring and connectors for any signs of wear or damage. Additionally, addressing any related issues promptly can help prevent the code from reoccurring.
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