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U2135 Chevrolet Code - Lost Communication With Rear Integration Module

Quick Answer

The U2135 code for Chevrolet vehicles indicates that there is a communication problem with the Rear Integration Module (RIM). Common causes include Loose or corroded wiring connections related to the RIM, A faulty Rear Integration Module, Malfunctioning Body Control Module. 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
U2135 Chevrolet indicates Lost Communication With Rear Integration Module.
Common causes
Common causes include Loose or corroded wiring connections related to the RIM, A faulty Rear Integration Module, Malfunctioning Body Control Module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code U2135 Chevrolet Description

The U2135 code for Chevrolet vehicles indicates that there is a communication problem with the Rear Integration Module (RIM). The RIM is responsible for controlling various functions in the rear of the vehicle, such as the rear lights, power windows, and other accessories. When communication is lost with the RIM, it can lead to malfunctions in these systems, causing issues with the vehicle's overall performance and functionality.

OBDII Code U2135 Chevrolet - Lost Communication With Rear Integration Module
U2135 Chevrolet Code - Lost Communication With Rear Integration Module

Common Causes of U2135 Chevrolet

  1. Loose or corroded wiring connections related to the RIM
  2. A faulty Rear Integration Module
  3. Malfunctioning Body Control Module
  4. Issues with the vehicle's CAN bus communication system
  5. Water damage or moisture affecting the RIM or related components

Symptoms of U2135 Chevrolet

  1. Rear lights not working or functioning intermittently
  2. Power windows in the rear of the vehicle not operating properly
  3. Rear accessories, such as the rear wiper or rear defroster, failing to function
  4. Dashboard warning light indicating a communication error with the RIM

How to Fix U2135 Chevrolet

  1. Begin by conducting a thorough inspection of the wiring connections related to the RIM. Check for any loose or corroded connections and repair as necessary.
  2. Use a diagnostic scan tool to communicate with the RIM and other modules in the vehicle to identify the specific communication issue.
  3. Test the RIM for functionality and replace it if found to be faulty.
  4. Check the Body Control Module for any malfunctions and address any issues discovered.
  5. Clear the diagnostic trouble codes from the vehicle's system and test the affected systems to ensure proper operation.

Cost to Fix U2135 Chevrolet

The typical repair costs for addressing the U2135 code can vary depending on the specific cause of the communication problem and the required repairs. In general, the cost of replacing a faulty RIM can range from $200 to $500, including parts and labor. Additional costs may be incurred if other components, such as the BCM, also require replacement or repair.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U2135 Chevrolet Code

1. What are the common symptoms of OBDII code U2135 in a Chevrolet related to the loss of communication with the Rear Integration Module?

- Common symptoms include non-functioning rear lights, issues with the rear windshield wiper, and failure of rear electrical components.

2. What are some possible causes of the U2135 code in a Chevrolet indicating a communication problem with the Rear Integration Module?

- Potential causes include a faulty rear integration module, damaged wiring or connectors, a blown fuse, or a software glitch in the vehicle's system.

3. How can I diagnose the U2135 code in a Chevrolet to pinpoint the issue with the Rear Integration Module?

- Diagnosis involves using a diagnostic scanner to retrieve the trouble codes, checking the rear integration module for power and ground connections, inspecting wiring for damage, and testing communication signals.

4. Is it safe to continue driving my Chevrolet with the U2135 code indicating a communication failure with the Rear Integration Module?

- It is not recommended to drive the vehicle with this code present, as it may lead to safety hazards due to non-functioning rear lights or other electrical components.

5. Can the U2135 code be cleared/reset in a Chevrolet to see if it reoccurs, or does it require immediate repair?

- Clearing the code may temporarily resolve the issue, but if the problem persists and the code returns, it indicates an ongoing problem that needs to be addressed promptly.

6. Are there any DIY repair tips for fixing the U2135 code related to lost communication with the Rear Integration Module in a Chevrolet?

- DIY repair options include checking and cleaning the module connectors, inspecting and repairing damaged wiring, and ensuring all fuses related to the rear integration module are intact.

7. What are the potential repair options for resolving the U2135 code in a Chevrolet caused by communication issues with the Rear Integration Module?

- Repair options may include replacing the rear integration module, repairing damaged wiring or connectors, resetting the module software, or seeking professional assistance for further diagnosis and repair.

8. How much does it typically cost to repair the U2135 code in a Chevrolet due to the lost communication with the Rear Integration Module?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from a few hundred to a thousand dollars, including parts and labor.

9. Can a faulty battery or alternator cause the U2135 code to appear in a Chevrolet, signaling a communication problem with the Rear Integration Module?

- While a weak battery or alternator may affect overall vehicle electrical systems, they are unlikely to directly trigger the U2135 code. It is more commonly related to specific module or wiring issues.

10. Is it advisable to seek professional help from a certified mechanic or dealership for diagnosing and repairing the U2135 code in a Chevrolet with communication problems with the Rear Integration Module?

- Yes, it is recommended to consult a qualified technician with experience in diagnosing and repairing electrical issues in vehicles, especially when dealing with complex communication problems like the U2135 code.

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