AutoCodes – GMC – U182E GMC

U182E GMC Code - Drive Motor Control Module 1 Lost Communication With Hybrid/EV Powertrain Control Module 2 On Powertrain Expansion Communication Bus

Quick Answer

The serial data circuit is the means by which the devices in the vehicle communicate with each other. Common causes include Faulty Hybrid/EV Powertrain Control Module 2, Hybrid/EV Powertrain Control Module 2 harness is open or shorted, Hybrid/EV Powertrain Control Module 2 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: U182E GMC indicates Drive Motor Control Module 1 Lost Communication With Hybrid/EV Powertrain Control Module 2 On Powertrain Expansion Communication Bus.
Common causes: Common causes include Faulty Hybrid/EV Powertrain Control Module 2, Hybrid/EV Powertrain Control Module 2 harness is open or shorted, Hybrid/EV Powertrain Control Module 2 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 399

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jun 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U182E GMC Description

The serial data circuit is the means by which the devices in the vehicle communicate with each other. Once the scan tool is connected to the serial data circuit through the Data Link Connector (DLC), the scan tool can be used to monitor each device for diagnostic purposes and to check for Diagnostic Trouble Code (DTC). When the vehicle is ON, each device communicating on the serial data circuit sends a state of health message to ensure that the device is operating properly. When a device stops communicating on the serial data circuit, for example, if the device loses power or ground, the state of health message it normally sends on the serial data circuit disappears. Other devices on the serial data circuit, which expect to receive that state of the health message, detect its absence; those devices in turn set a DTC associated with the loss of the state of health of the non-communicating device. A loss of serial data communications DTC does not represent a failure of the devices that contain the stored DTC. The DTC will set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U182E GMC - Drive Motor Control Module 1 Lost Communication With Hybrid/EV Powertrain Control Module 2 On Powertrain Expansion Communication Bus - AutoCodes.com — U182E GMC Code - Drive Motor Control Module 1 Lost Communication With Hybrid/EV Powertrain Control Module 2 On Powertrain Expansion Communication Bus

What does this mean?

What are the Possible Causes of the DTC U182E GMC?

Faulty Hybrid/EV Powertrain Control Module 2
Hybrid/EV Powertrain Control Module 2 harness is open or shorted
Hybrid/EV Powertrain Control Module 2 circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC U182E 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 U182E 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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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 U182E GMC Code

1. What are the common symptoms of OBDII code U182E in a GMC vehicle?

The common symptoms of code U182E typically include the check engine light illuminating on the dashboard, reduced power or performance, and potential issues with the hybrid or electric powertrain functionality.

2. What could cause the U182E code to appear in a GMC vehicle?

The U182E code in a GMC vehicle is often triggered by a communication error between the Drive Motor Control Module 1 and the Hybrid/EV Powertrain Control Module 2 on the Powertrain Expansion Communication Bus.

3. How serious is the U182E code in a GMC vehicle?

While the U182E code may not cause immediate drivability issues, it is important to address it promptly to prevent potential long-term damage to the hybrid or electric powertrain components.

4. Can I continue driving with the U182E code in my GMC vehicle?

It is not recommended to continue driving with the U182E code present, as it can impact the performance and efficiency of the hybrid or electric powertrain system. It is best to have the issue diagnosed and repaired as soon as possible.

5. How can I diagnose the U182E code in a GMC vehicle?

Diagnosing the U182E code typically involves using a diagnostic scanner to retrieve the specific details of the code, checking for any related codes or communication errors, and inspecting the relevant control modules and wiring for faults.

6. What are some repair tips for fixing the U182E code in a GMC vehicle?

Repairing the U182E code may involve inspecting and repairing any damaged wiring or connections between the Drive Motor Control Module 1 and the Hybrid/EV Powertrain Control Module 2, resetting the fault codes, and conducting a thorough system test.

7. Can a DIY enthusiast fix the U182E code in a GMC vehicle?

While some DIY enthusiasts may be able to address simple wiring or connection issues related to the U182E code, it is recommended to consult a professional mechanic or dealership for a comprehensive diagnosis and repair to ensure the proper functioning of the hybrid or electric powertrain system.

8. How much does it cost to repair the U182E code in a GMC vehicle?

The cost of repairing the U182E code can vary depending on the extent of the issue, the necessary parts, and labor costs. It is advisable to obtain quotes from different repair shops or dealerships to compare prices.

9. Will resetting the U182E code make it go away permanently?

Resetting the U182E code may temporarily clear the fault code, but if the underlying issue causing the code is not addressed, it is likely to reappear. It is crucial to diagnose and repair the root cause of the problem to prevent future occurrences.

10. Is the U182E code specific to GMC vehicles only?

The U182E code related to the Drive Motor Control Module 1 lost communication with the Hybrid/EV Powertrain Control Module 2 is specific to GMC vehicles with hybrid or electric powertrain systems and may not be applicable to vehicles from other manufacturers.