U182A 2016 GMC Sierra Code - Hybrid Powertrain Control Module Lost Communication with Battery Energy Control Module on Powertrain Expansion CAN Bus Malfunction
Quick Answer
Devices connected to the powertrain high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Starter/Generator Control Module, Starter/Generator Control Module harness is open or shorted, Starter/Generator 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
- U182A 2016 GMC Sierra indicates Hybrid Powertrain Control Module Lost Communication with Battery Energy Control Module on Powertrain Expansion CAN Bus Malfunction.
- Common causes
- Common causes include Faulty Starter/Generator Control Module, Starter/Generator Control Module harness is open or shorted, Starter/Generator 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 U182A 2016 GMC Sierra Description
The Diagnostic Trouble Code (DTC) will be set when a supervised periodic message that includes the transmitter device availability has not been received.
What are the Possible Causes of the DTC U182A 2016 GMC Sierra?
- Faulty Starter/Generator Control Module
- Starter/Generator Control Module harness is open or shorted
- Starter/Generator Control Module circuit poor electrical connection
- Faulty Battery Energy Control Module
How to Fix the DTC U182A 2016 GMC Sierra?
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 U182A 2016 GMC Sierra 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 U182A 2016 GMC Sierra Code
1. What does the OBDII code U182A mean on a 2016 GMC Sierra?
The U182A code indicates that the Hybrid Powertrain Control Module has lost communication with the Battery Energy Control Module on the Powertrain Expansion CAN Bus.
2. What are the common symptoms of the U182A code?
Symptoms may include the check engine light or hybrid system warning light turning on, reduced power or fuel economy, or the vehicle failing to enter hybrid mode.
3. What causes the U182A code to appear?
Possible causes include faulty wiring or connectors in the CAN bus communication network, a malfunctioning Battery Energy Control Module, or a problem with the Hybrid Powertrain Control Module.
4. Can a loose connection trigger the U182A code?
Yes, loose or corroded connectors in the CAN bus system can disrupt communication and cause the U182A code.
5. How is the U182A code diagnosed?
A technician will inspect the CAN bus wiring and connectors, check for other related codes, and use a scan tool to monitor module communication.
6. Can I drive my 2016 GMC Sierra with the U182A code?
It’s not recommended since the hybrid system may not function properly, which could lead to reduced performance or potential damage to components.
7. What repairs are typically needed to fix the U182A code?
Repairs may involve repairing or replacing damaged CAN bus wiring, reconnecting loose connectors, or replacing a malfunctioning Battery Energy Control Module or Hybrid Powertrain Control Module.
8. How much does it cost to fix the U182A code?
The cost depends on the specific issue, but it could range from $100 for wiring repairs to over $1,000 if a module replacement is required.
9. Can a software update fix the U182A code?
In some cases, reprogramming or updating the software for the affected modules may resolve the issue.
10. How can I prevent the U182A code from appearing again?
Regularly inspect the vehicle’s wiring and connectors for wear or corrosion, and ensure all software updates for the hybrid system are applied.
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