U182D GMC 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 GMC 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.
Code U182D GMC Description
What are the Possible Causes of the DTC U182D 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 U182D 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 U182D 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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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
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.
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