U179A 2017 Chevrolet Silverado Code - Lost Communication with Hybrid/EV Powertrain Control Module 2
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
- U179A 2017 Chevrolet Silverado indicates Lost Communication with Hybrid/EV Powertrain Control Module 2.
- 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 U179A 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC U179A 2017 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
How to Fix the DTC U179A 2017 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 U179A 2017 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.
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Frequently Asked Questions about U179A 2017 Chevrolet Silverado Code
1. What does the OBDII code U179A mean on a 2017 Chevrolet Silverado?
The U179A code indicates "Lost Communication with Hybrid/EV Powertrain Control Module 2," meaning the vehicle's primary computer cannot communicate with the secondary hybrid or EV control module.
2. What are the common symptoms of the U179A code?
Symptoms include the check engine light or service warning lights, reduced fuel efficiency, poor hybrid system performance, or the vehicle entering limp mode.
3. What causes the U179A code on a 2017 Chevrolet Silverado?
Common causes include faulty wiring or connectors, a defective Hybrid/EV Powertrain Control Module 2, software glitches, or issues with the communication network (CAN bus).
4. Can I still drive my 2017 Chevrolet Silverado with the U179A code?
Driving may be possible, but the vehicle could experience reduced performance or enter limp mode. It’s best to address the issue as soon as possible to avoid further damage.
5. How is the U179A code diagnosed?
A mechanic will use a diagnostic scanner to access the code, inspect wiring and connectors for damage, check the CAN bus network, and test the Hybrid/EV Powertrain Control Module 2 for faults.
6. How do I fix the U179A code on my 2017 Chevrolet Silverado?
Fixes may include repairing or replacing damaged wiring or connectors, reprogramming or replacing the Hybrid/EV Powertrain Control Module 2, or updating the vehicle’s software.
7. Is the U179A code specific to hybrid or EV systems?
Yes, this code is specific to vehicles with hybrid or electric systems and relates to communication between powertrain control modules.
8. How much does it cost to repair the U179A code?
Repair costs vary but may range from $100 for wiring repairs to over $1,000 if the control module needs replacement and reprogramming.
9. Can a software update fix the U179A code?
Sometimes, a software update may resolve communication issues if the problem is caused by a programming glitch in the vehicle’s modules.
10. What should I check first if I get the U179A code?
Start by inspecting the wiring and connectors related to the Hybrid/EV Powertrain Control Module 2 for damage, corrosion, or loose connections.
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