U0136 GMC Code - Lost Communication With Rear Differential Control Module
Quick Answer
Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Rear Differential Control Module, Rear Differential Control Module harness is open or shorted, Rear Differential 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
- U0136 GMC indicates Lost Communication With Rear Differential Control Module.
- Common causes
- Common causes include Faulty Rear Differential Control Module, Rear Differential Control Module harness is open or shorted, Rear Differential 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 U0136 GMC Description
What are the Possible Causes of the DTC U0136 GMC?
- Faulty Rear Differential Control Module
- Rear Differential Control Module harness is open or shorted
- Rear Differential Control Module circuit poor electrical connection
How to Fix the DTC U0136 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 U0136 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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Frequently Asked Questions about U0136 GMC Code
1. What are the common symptoms of OBDII code U0136 GMC (Lost Communication With Rear Differential Control Module)?
- Common symptoms include the malfunction indicator light (MIL) illuminating on the dashboard, issues with the rear differential control, and potential drivability problems.
2. What are the possible causes of the U0136 code in a GMC vehicle?
- The U0136 code can be triggered by issues such as a faulty rear differential control module, damaged wiring or connectors, communication network problems, or a malfunctioning powertrain control module (PCM).
3. How can I diagnose the U0136 code in my GMC vehicle?
- Diagnosing the U0136 code involves using a diagnostic scanner to retrieve the trouble codes, checking the rear differential control module for any visible damage, inspecting wiring and connectors for signs of wear or corrosion, and testing the communication network.
4. What are some repair tips for fixing the U0136 code in a GMC vehicle?
- Repair tips include checking and repairing any damaged wiring or connectors, replacing the rear differential control module if necessary, ensuring proper communication network connections, and clearing the trouble codes after repairs are completed.
5. Can I drive my GMC vehicle with the U0136 trouble code present?
- It is not recommended to drive your vehicle with the U0136 code active, as it can lead to further damage and potential safety issues. It is best to address the issue promptly to avoid any complications.
6. How much does it typically cost to repair the U0136 code in a GMC vehicle?
- The cost of repairing the U0136 code can vary depending on the specific cause of the issue, parts needed for replacement, labor costs, and whether you choose to address the problem yourself or take it to a professional mechanic.
7. Is the U0136 code a common issue in GMC vehicles?
- The U0136 code related to lost communication with the rear differential control module is not as common as some other OBDII codes, but it can still occur in GMC vehicles due to various factors like electrical issues or module failures.
8. Can a DIY enthusiast fix the U0136 code issue in a GMC vehicle?
- Depending on your experience and knowledge of automotive repairs, you may be able to address the U0136 code yourself by following diagnostic procedures, checking for common causes, and making necessary repairs or replacements.
9. Are there any recalls related to the U0136 code in GMC vehicles?
- Recalls specific to the U0136 code in GMC vehicles are not common, but it's always a good idea to check with the manufacturer or local dealership to see if there are any related recalls or technical service bulletins.
10. How can I prevent the U0136 code from occurring in my GMC vehicle in the future?
- To prevent the U0136 code from occurring, you can perform regular maintenance checks on your vehicle, address any electrical issues promptly, avoid water damage to the rear differential control module, and ensure proper wiring connections are secure.
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