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U182D 2017 GMC Sierra Code - Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus

Quick Answer

The U182D diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that there has been a communication failure with the Hybrid/EV Powertrain Control Module 2 on the Powertrain Expansion Communication Bus. Common causes include Faulty wiring or loose connections, Damaged control module, Communication network issues. 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 2017 GMC Sierra indicates Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus.
Common causes
Common causes include Faulty wiring or loose connections, Damaged control module, Communication network issues.
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 Sep 11, 2024
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Code U182D 2017 GMC Sierra Description

The U182D diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that there has been a communication failure with the Hybrid/EV Powertrain Control Module 2 on the Powertrain Expansion Communication Bus. This means that the vehicle's onboard computer system is unable to establish communication with the specific control module responsible for managing the hybrid or electric powertrain components. This loss of communication can lead to various issues related to the vehicle's performance, efficiency, and overall drivability.

OBDII Code U182D 2017 GMC Sierra - Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus
U182D 2017 GMC Sierra Code - Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus

Common Causes of U182D 2017 GMC Sierra

  1. Faulty wiring or loose connections
  2. Damaged control module
  3. Communication network issues
  4. Software glitches or programming errors
  5. Water damage or corrosion in the control module

Symptoms of U182D 2017 GMC Sierra

  1. Reduced fuel efficiency
  2. Loss of power
  3. Hesitation or stalling while driving
  4. Warning lights or messages on the dashboard
  5. Limp mode activation

How to Fix U182D 2017 GMC Sierra

  1. Perform a diagnostic scan to retrieve the trouble codes and identify the specific cause of the communication failure.
  2. Inspect the wiring and connections related to the Hybrid/EV Powertrain Control Module 2 for any signs of damage or corrosion.
  3. Test the control module to determine if it is functioning correctly or needs to be replaced.
  4. Check the communication network within the vehicle to ensure proper connectivity between the control modules.
  5. Clear the trouble codes and reset the system after completing the repairs to verify that the issue has been resolved.

Cost to Fix U182D 2017 GMC Sierra

The typical repair costs for addressing the U182D code on a 2017 GMC Sierra can vary depending on the exact cause of the communication failure. In general, the parts and labor required for this repair could range from $200 to $500. However, it is important to note that the specific diagnosis time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. Auto repair shops commonly charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships, while independent shops may offer lower rates. For a more precise estimate, it is advisable to consult local repair shops.

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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 U182D 2017 GMC Sierra Code

1. What does OBDII code U182D mean on a 2017 GMC Sierra?

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 code U182D in a 2017 GMC Sierra?

Symptoms may include a check engine light, reduced vehicle performance, limited or no electric/hybrid drive functionality, or trouble shifting.

3. What causes code U182D to appear on a 2017 GMC Sierra?

Possible causes include faulty wiring or connectors in the communication bus, a malfunctioning Hybrid/EV Powertrain Control Module 2, or issues with the vehicle’s battery pack or related systems.

4. Can a weak battery cause code U182D on a GMC Sierra?

Yes, a weak or failing 12V battery or high-voltage battery can disrupt communication and trigger this code.

5. How do you diagnose code U182D on a 2017 GMC Sierra?

Diagnosis involves scanning for additional codes, inspecting the communication bus wiring and connectors, testing the powertrain module for proper operation, and checking the battery health.

6. Is it safe to drive a 2017 GMC Sierra with code U182D?

It may not be safe, as the vehicle could experience reduced power or operational issues. Prompt diagnosis and repair are recommended.

7. How can wiring issues cause code U182D on a GMC Sierra?

Damaged, corroded, or loose wires and connectors can disrupt the communication signal between the control module and other systems, triggering the code.

8. What is the cost to fix a U182D code on a 2017 GMC Sierra?

Repair costs vary depending on the root cause but can range from $100 for simple wiring repairs to over $1,000 if a module replacement is needed.

9. Can a software update fix code U182D on a GMC Sierra?

In some cases, a software update for the affected control module may resolve communication issues, but this depends on the vehicle’s specific situation.

10. Do I need to replace the Hybrid/EV Powertrain Control Module 2 to fix code U182D?

Not necessarily. The module should only be replaced if it’s confirmed to be faulty after thorough testing and ruling out wiring or communication issues.

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