U1814 2015 GMC Sierra 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 2015 GMC Sierra 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 2015 GMC Sierra Description
What are the Possible Causes of the DTC U1814 2015 GMC Sierra?
- 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 2015 GMC Sierra?
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 2015 GMC Sierra 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 U1814 2015 GMC Sierra Code
1. What are the common symptoms of OBDII code U1814 in a 2015 GMC Sierra?
The common symptoms of U1814 in a 2015 GMC Sierra may include intermittent or complete loss of communication with the powertrain control module (PCM), resulting in issues like stalling, rough idling, or difficulty starting the vehicle.
2. What is the likely cause of OBDII code U1814 in a 2015 GMC Sierra?
The most likely cause of U1814 in a 2015 GMC Sierra is a malfunction in the powertrain wake-up communication circuit, which can be due to wiring issues, a faulty PCM, or a poor connection.
3. How can I diagnose the powertrain wake-up communication circuit issue causing code U1814 in my 2015 GMC Sierra?
To diagnose the issue, you should start by checking the wiring harness for any visible damage or loose connections. Using a multimeter, test the continuity of the circuit and inspect the PCM for any signs of damage or malfunction.
4. Can a DIY enthusiast repair OBDII code U1814 in a 2015 GMC Sierra?
While some simple wiring fixes or connector reseating can be done by a DIY enthusiast, diagnosing and repairing complex issues related to the powertrain wake-up communication circuit may require professional knowledge and diagnostic tools.
5. Is it safe to continue driving a 2015 GMC Sierra with OBDII code U1814?
It is not recommended to drive a vehicle with unresolved OBDII code U1814, as it can lead to potential safety hazards and further damage to the powertrain system. It is advisable to address the issue promptly.
6. How much does it typically cost to repair OBDII code U1814 in a 2015 GMC Sierra?
The cost of repairing U1814 in a 2015 GMC Sierra can vary depending on the exact cause of the issue, labor costs in your area, and whether new parts are needed. It is best to obtain quotes from reputable mechanics.
7. Can a faulty battery or alternator cause OBDII code U1814 in a 2015 GMC Sierra?
While a faulty battery or alternator can potentially cause communication issues in a vehicle, OBDII code U1814 specifically relates to the powertrain wake-up communication circuit, so it is more likely related to wiring or PCM problems.
8. Will resetting the OBDII code U1814 in a 2015 GMC Sierra make it go away permanently?
Resetting the code may temporarily clear the check engine light, but if the underlying issue with the powertrain wake-up communication circuit is not fixed, the code is likely to reappear after driving cycles.
9. Are there any recalls or technical service bulletins related to OBDII code U1814 in a 2015 GMC Sierra?
It is recommended to check with a GMC dealership or visit the NHTSA website to see if there are any recalls or technical service bulletins related to OBDII code U1814 specifically for the 2015 GMC Sierra model.
10. Can extreme weather conditions affect the occurrence of OBDII code U1814 in a 2015 GMC Sierra?
Extreme weather conditions can sometimes exacerbate existing electrical issues in a vehicle, including those related to the powertrain wake-up communication circuit. It is important to keep the vehicle well maintained to minimize the impact of weather on such systems.
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