U0249 GMC Code - Lost Communication With Rear Entertainment Control Module
Quick Answer
The U0249 diagnostic trouble code (DTC) indicates that there is a loss of communication with the Rear Entertainment Control Module in a GMC vehicle. Common causes include Faulty Rear Entertainment Control Module, Loose or corroded wiring connections, Electrical system issues. 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
- U0249 GMC indicates Lost Communication With Rear Entertainment Control Module.
- Common causes
- Common causes include Faulty Rear Entertainment Control Module, Loose or corroded wiring connections, Electrical system issues.
- 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 U0249 GMC Description
The U0249 diagnostic trouble code (DTC) indicates that there is a loss of communication with the Rear Entertainment Control Module in a GMC vehicle. This module is responsible for controlling various entertainment features in the rear of the vehicle, such as the DVD player, screens, and audio controls. When communication is lost with this module, it can lead to a variety of issues related to rear entertainment functionality.
Common Causes of U0249 GMC
- Faulty Rear Entertainment Control Module
- Loose or corroded wiring connections
- Electrical system issues
- Software glitches in the module
- Water damage or exposure to moisture
Symptoms of U0249 GMC
- Rear entertainment system not turning on or functioning properly
- Distorted or no sound coming from rear speakers
- Error messages on the rear entertainment system display
- Inability to control rear entertainment features from the front console
How to Fix U0249 GMC
- Begin by checking the wiring connections to the Rear Entertainment Control Module for any signs of damage or corrosion. Repair or replace any faulty wiring.
- Use a diagnostic scan tool to communicate with the module and attempt to reset it. Clear any stored error codes and see if communication can be restored.
- If communication cannot be reestablished, consider replacing the Rear Entertainment Control Module with a new one.
- After replacing the module, ensure that it is properly programmed and calibrated to work with the vehicle's systems.
- Test the rear entertainment system to confirm that the issue has been resolved.
Cost to Fix U0249 GMC
The cost of repairing a U0249 code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. As a rough estimate, replacing the Rear Entertainment Control Module can cost anywhere from $200 to $500, including parts and labor. Additional diagnostic time may be needed to pinpoint the exact cause of the communication loss, which can add to the overall repair cost. It is advisable to contact local auto repair shops for accurate pricing based on the vehicle make and model.
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Frequently Asked Questions about U0249 GMC Code
1. What does the OBDII code U0249 mean on a GMC?
U0249 indicates a loss of communication with the Rear Entertainment Control Module (RECM) on the vehicle's communication network.
2. What are the common symptoms of code U0249 in a GMC?
Symptoms may include the rear entertainment system not functioning, no audio or video output, or intermittent connection issues.
3. What causes the U0249 code to appear in a GMC?
Common causes include a faulty Rear Entertainment Control Module, damaged wiring or connectors, or issues with the vehicle's CAN (Controller Area Network) bus system.
4. Can a dead battery cause the U0249 code on a GMC?
Yes, a dead or weak battery can disrupt communication on the CAN network and trigger code U0249.
5. How do I diagnose the U0249 code on my GMC?
Start by checking the wiring and connectors to the RECM for damage or loose connections. Use a scan tool to test the communication signals on the CAN bus.
6. Can I still drive my GMC with a U0249 code?
Yes, the vehicle is generally drivable, but the rear entertainment system may not function properly, which could be inconvenient for passengers.
7. How do I fix the U0249 code on a GMC?
Repairs can involve reconnecting or replacing damaged wiring, updating the RECM software, or replacing the faulty module if necessary.
8. Does clearing the U0249 code resolve the issue?
Clearing the code may temporarily remove it, but if the underlying problem isn’t fixed, the code will likely return.
9. What tools are needed to troubleshoot the U0249 code?
A diagnostic scan tool capable of reading manufacturer-specific codes and testing CAN bus communication is essential.
10. Is the U0249 code specific to GMC vehicles?
No, U0249 is a generic OBDII code, but its specific symptoms and repair steps can vary depending on the make and model of the vehicle.
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