U179C GMC Code - Lost Communication with One or More Hybrid/EV Battery Interface Control Modules
Quick Answer
The Hybrid/EV Powertrain Control Module 2 communicates with the Hybrid/EV Battery Interface Control Modules via a dedicated bus inside the Hybrid/EV Battery Pack assembly. Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module 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
- U179C GMC indicates Lost Communication with One or More Hybrid/EV Battery Interface Control Modules.
- Common causes
- Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module 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 U179C GMC Description
What are the Possible Causes of the DTC U179C GMC?
- Faulty Hybrid/EV Battery Interface Control Module
- Hybrid/EV Battery Interface Control Module harness is open or shorted
- Hybrid/EV Battery Interface Control Module circuit poor electrical connection
How to Fix the DTC U179C 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 U179C 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
- U179C 2014 GMC Sierra — Lost Communication with One or More Hybrid/EV Battery Interface Control Modules
- U179C 2015 GMC Sierra — Lost Communication with One or More Hybrid/EV Battery Interface Control Modules
- U179C 2016 GMC Sierra — Lost Communication with One or More Hybrid/EV Battery Interface Control Modules
- U179C 2017 GMC Sierra — Lost Communication with One or More Hybrid/EV Battery Interface Control Modules
- U179C 2018 GMC Sierra — Lost Communication with One or More Hybrid/EV Battery Interface Control Modules
Frequently Asked Questions about U179C GMC Code
1. What are the common symptoms of OBDII code U179C GMC?
- Common symptoms include the check engine light illuminating, loss of communication with the hybrid/EV battery interface control modules, and potential drivability issues.
2. What are the possible causes of OBDII code U179C GMC?
- Possible causes include wiring or connection issues, a faulty hybrid/EV battery interface control module, software glitches, or issues with the vehicle's electrical system.
3. How can I diagnose OBDII code U179C GMC?
- Diagnosis typically involves using a professional OBDII scanner to retrieve the code and pinpoint the exact module that is not communicating properly. Checking the wiring and connections is also important.
4. Can I drive my vehicle with OBDII code U179C GMC?
- It is generally not recommended to drive the vehicle with this code present, as it can lead to further electrical or drivability issues. It's best to address the problem as soon as possible.
5. How can I repair OBDII code U179C GMC?
- Repair options may include checking and repairing any damaged wiring, ensuring proper connections, replacing the faulty hybrid/EV battery interface control module, or updating software as needed.
6. Is it necessary to take my vehicle to a dealership for OBDII code U179C GMC?
- While a dealership may have specialized knowledge and tools for hybrid/EV systems, an experienced mechanic or auto repair shop should be able to diagnose and repair this code effectively.
7. Are there any preventative measures to avoid OBDII code U179C GMC?
- Regular maintenance, including checking the electrical system and connections, can help prevent issues that may lead to this code. Keeping the hybrid/EV system in good condition is crucial.
8. Can a DIY enthusiast attempt to fix OBDII code U179C GMC?
- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address simple wiring or connection issues. However, complex repairs may require professional help.
9. Will resetting the OBDII code U179C GMC make it go away permanently?
- Resetting the code may temporarily turn off the check engine light, but if the underlying issue is not addressed, the code is likely to reappear. It's important to diagnose and fix the root cause.
10. How long does it typically take to repair OBDII code U179C GMC?
- The repair time can vary depending on the specific cause of the code and the availability of parts. Simple fixes like reconnecting a loose wire may take a short time, while replacing a control module could take longer.
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