AutoCodes – Chevrolet – U182D 2018 Chevrolet Silverado

U182D 2018 Chevrolet Silverado Code - 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: U182D 2018 Chevrolet Silverado indicates 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 222

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 Jul 24, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U182D 2018 Chevrolet Silverado 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 Codes (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 health message, detect its absence; those devices in turn set a DTC associated with the loss of 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.

OBDII Code U182D 2018 Chevrolet Silverado - Lost Communication with Hybrid/EV Powertrain Control Module 2 on Powertrain Expansion Communication Bus - AutoCodes.com — U182D 2018 Chevrolet Silverado Code - 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 U182D 2018 Chevrolet Silverado?

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 U182D 2018 Chevrolet Silverado?

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 U182D 2018 Chevrolet Silverado 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 U182D 2018 Chevrolet Silverado code?

Need more information on how to fix the U182D 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 2018 Chevrolet Silverado Code

1. What are common symptoms of OBDII code U182D in a 2018 Chevrolet Silverado?

Symptoms may include the check engine light coming on, poor performance, issues with the hybrid/EV powertrain, and potential difficulty starting the vehicle.

2. What can cause the OBDII code U182D in a 2018 Chevrolet Silverado?

The code U182D typically indicates a communication problem between the powertrain control modules in the hybrid/EV system and the vehicle's communication bus.

3. How serious is the U182D code in a 2018 Chevrolet Silverado?

While the vehicle may still be operable, it is essential to address this communication issue promptly to prevent potential further damage to the hybrid/EV powertrain components.

4. What should I do if I encounter the U182D code in my 2018 Chevrolet Silverado?

It is recommended to have a professional diagnostic scan performed to pinpoint the exact cause of the communication error and address the issue accordingly.

5. Can I continue driving my 2018 Chevrolet Silverado with the U182D code?

If the vehicle is still running without noticeable issues, you can drive it to a service center for diagnosis and repair. However, it's best to avoid prolonged driving to prevent any potential damage.

6. How can I repair the U182D code in a 2018 Chevrolet Silverado?

Repairing the U182D code typically involves checking and repairing any wiring issues, ensuring proper connections, and potentially reprogramming or replacing the affected powertrain control module.

7. Is it possible to prevent the U182D code from appearing in my 2018 Chevrolet Silverado?

Regular maintenance, including checking the hybrid/EV powertrain components and the communication systems, can help prevent communication errors that trigger the U182D code.

8. Are there any common culprits for the U182D code in a 2018 Chevrolet Silverado?

Faulty wiring, loose connections, software glitches, or issues with the powertrain control modules are common culprits for triggering the U182D code.

9. How long does it typically take to repair the U182D code in a 2018 Chevrolet Silverado?

The repair time can vary depending on the exact cause of the communication error. It may range from a quick fix like reconnecting loose wires to more extensive repairs involving module replacement.

10. Can a DIY enthusiast fix the U182D code issue in a 2018 Chevrolet Silverado?

While some basic checks like inspecting connections can be done by a DIY enthusiast, diagnosing and repairing the specific cause of the U182D code may require professional diagnostic tools and expertise.