Engine-Codes.com
Engine-Codes – GMC – U182D GMC

U182D GMC Code - Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus

Quick Answer

The U182D diagnostic trouble code (DTC) for GMC vehicles indicates that there has been a loss of communication with the Hybrid/EV Powertrain Control Module 2 on the Powertrain Expansion Communication Bus. Common causes include Faulty Powertrain Control Module 2, Wiring or connection issues in the communication bus, Software glitches or programming errors. 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
U182D GMC indicates Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus.
Common causes
Common causes include Faulty Powertrain Control Module 2, Wiring or connection issues in the communication bus, Software glitches or programming errors.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 18, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code U182D GMC Description

The U182D diagnostic trouble code (DTC) for GMC vehicles indicates that there has been a loss of communication with the Hybrid/EV Powertrain Control Module 2 on the Powertrain Expansion Communication Bus. This communication failure can have significant implications for the vehicle's performance, as the Powertrain Control Module plays a crucial role in managing the operation of the hybrid or electric powertrain components. When communication is lost, the vehicle may experience issues with starting, acceleration, fuel efficiency, and overall drivability.

OBDII Code U182D GMC - Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus
U182D GMC Code - Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus

Common Causes of U182D GMC

  1. Faulty Powertrain Control Module 2
  2. Wiring or connection issues in the communication bus
  3. Software glitches or programming errors
  4. Electrical interference from other components
  5. Environmental factors such as moisture or corrosion

Symptoms of U182D GMC

  1. Check engine light illuminated on the dashboard
  2. Loss of power or reduced acceleration
  3. Inconsistent engine performance
  4. Issues with starting the vehicle
  5. Poor fuel efficiency

How to Fix U182D GMC

  1. Perform a diagnostic scan with a professional scan tool to retrieve the specific DTC
  2. Inspect the wiring and connections for any damage or loose connections
  3. Test the Powertrain Control Module 2 for functionality and potential failures
  4. Update software or reprogram the control module if necessary
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved

Cost to Fix U182D GMC

The cost of repairing a U182D code can vary depending on the specific cause of the issue. In general, the cost of parts for a Powertrain Control Module replacement can range from $200 to $800, while labor costs can add an additional $100 to $200. Overall, the total repair costs for addressing a communication issue with the Hybrid/EV Powertrain Control Module 2 on the Powertrain Expansion Communication Bus could range from $300 to $1000. It's important to factor in diagnostic time and labor rates, which can vary based on location and service provider.

Need more information about the U182D GMC code?

Need more information on how to fix the U182D GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U182D GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

  • U182D 2014 GMC Sierra — Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus
  • U182D 2015 GMC Sierra — Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus
  • U182D 2016 GMC Sierra — Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus
  • U182D 2017 GMC Sierra — Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus
  • U182D 2018 GMC Sierra — Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus
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 U182D GMC Code

1. What does the OBDII code U182D mean on a GMC vehicle?

The code U182D indicates a loss of communication with the Hybrid/EV Powertrain Control Module 2 on the powertrain expansion communication bus.

2. What are the common symptoms of the U182D code in GMC vehicles?

Symptoms may include the check engine light or hybrid system warning lights, reduced or no electric motor assist, poor fuel efficiency, or the vehicle failing to start.

3. What causes the U182D code to appear on a GMC?

The code can be caused by faulty wiring or connections in the communication bus, a failed Hybrid/EV Powertrain Control Module 2, low battery voltage, or software issues.

4. Can a low battery cause the U182D code in a GMC?

Yes, a low or weak 12V battery can disrupt communication between modules and trigger the U182D code.

5. How do I diagnose the U182D code in my GMC vehicle?

Start by checking the wiring and connectors for damage or corrosion, inspect the battery voltage, and use a scan tool to verify communication between control modules.

6. Is it safe to drive a GMC with the U182D code?

Driving with this code may not be safe, as it can affect hybrid or EV operation, potentially leading to reduced performance or failure to start.

7. Can the U182D code be cleared without repairs?

Clearing the code temporarily is possible, but if the underlying issue isn’t fixed, the code will likely return.

8. How much does it cost to repair the U182D code on a GMC?

Repair costs vary based on the issue. Simple fixes like repairing damaged wiring may cost under $200, while replacing a control module can cost $500–$1,500 or more.

9. What tools are needed to troubleshoot the U182D code?

You’ll need a professional-grade scan tool to check module communication and a multimeter to test wiring and voltage levels.

10. Can software updates fix the U182D code in GMC vehicles?

Yes, if the issue is related to outdated or corrupted software in the control module, a software update from the dealership may resolve the problem.

Discuss the causes and fixes for U182D GMC OBDII Code

Submit a New Comment

Code U182D GMC comments

No comments found for this page.