AutoCodes – GMC – U182A 2014 GMC Sierra

U182A 2014 GMC Sierra Code - Hybrid Powertrain Control Module Lost Communication with Battery Energy 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
U182A 2014 GMC Sierra indicates Hybrid Powertrain Control Module Lost Communication with Battery Energy 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.
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Code Popularity 182
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 24, 2023
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Code U182A 2014 GMC Sierra Description

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. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device.
The Diagnostic Trouble Code (DTC) will be set when a supervised periodic message that includes the transmitter device availability has not been received.
OBDII Code U182A 2014 GMC Sierra - Hybrid Powertrain Control Module Lost Communication with Battery Energy Control Module on Powertrain Expansion CAN Bus Malfunction - AutoCodes.com
U182A 2014 GMC Sierra Code - Hybrid Powertrain Control Module Lost Communication with Battery Energy Control Module on Powertrain Expansion CAN Bus Malfunction

What are the Possible Causes of the DTC U182A 2014 GMC Sierra?

  • Faulty Starter/Generator Control Module
  • Starter/Generator Control Module harness is open or shorted
  • Starter/Generator Control Module circuit poor electrical connection
  • Faulty Battery Energy Control Module

How to Fix the DTC U182A 2014 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 U182A 2014 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.

Need more information about the U182A 2014 GMC Sierra code?

Need more information on how to fix the U182A 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U182A 2014 GMC Sierra Code

1. What are common symptoms associated with OBDII code U182A in a 2014 GMC Sierra?

- Common symptoms include the check engine light coming on, loss of power, poor fuel efficiency, and issues with the hybrid powertrain system.

2. What does the OBDII code U182A mean for a 2014 GMC Sierra hybrid model?

- This code indicates a communication problem between the Hybrid Powertrain Control Module and the Battery Energy Control Module on the Powertrain Expansion CAN Bus.

3. What are possible causes of the U182A code in a 2014 GMC Sierra?

- Possible causes include damaged wiring, loose connections, a faulty control module, software issues, or a malfunction in the hybrid powertrain system.

4. How can I diagnose the U182A code in my 2014 GMC Sierra?

- Diagnosing the code typically involves using a diagnostic scanner to retrieve the specific details of the code and checking the wiring, connections, and components related to the hybrid powertrain system.

5. Can I continue driving my 2014 GMC Sierra with the U182A code?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further issues with the hybrid powertrain system and may affect the vehicle's performance and efficiency.

6. How can I repair the U182A code in my 2014 GMC Sierra?

- Repairing the code may involve checking and repairing any damaged wiring or connections, replacing faulty components, updating software, or reprogramming the control modules related to the hybrid powertrain system.

7. Is it possible to reset the U182A code in a 2014 GMC Sierra without fixing the underlying issue?

- While you can clear the code temporarily, it will likely reappear if the underlying issue is not addressed. It is essential to diagnose and repair the problem to prevent future issues.

8. Can a DIY enthusiast fix the U182A code in a 2014 GMC Sierra?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair simple issues related to the U182A code. However, complex problems may require professional assistance.

9. How much does it cost to repair the U182A code in a 2014 GMC Sierra?

- The cost of repairs can vary depending on the exact cause of the code, the extent of the damage, and whether any components need to be replaced. It is recommended to obtain quotes from reputable mechanics or dealerships.

10. Are there any recalls or technical service bulletins related to the U182A code in a 2014 GMC Sierra?

- It is advisable to check with the manufacturer or authorized service centers for any recalls or technical service bulletins related to the U182A code in your specific vehicle model and year.

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