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C1596 2014 GMC Sierra Code - Trailer Brake Power Control Module Enable Circuit

Quick Answer

The C1596 code for a 2014 GMC Sierra indicates a problem with the Trailer Brake Power Control Module Enable Circuit. Common causes include Faulty Trailer Brake Power Control Module, Damaged wiring or connectors in the enable circuit, Corrosion or poor connection in the circuit. 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
C1596 2014 GMC Sierra indicates Trailer Brake Power Control Module Enable Circuit.
Common causes
Common causes include Faulty Trailer Brake Power Control Module, Damaged wiring or connectors in the enable circuit, Corrosion or poor connection in the circuit.
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 19, 2024
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Code C1596 2014 GMC Sierra Description

The C1596 code for a 2014 GMC Sierra indicates a problem with the Trailer Brake Power Control Module Enable Circuit. This module is responsible for controlling the power to the trailer brakes, ensuring smooth and effective braking when towing a trailer. When this circuit malfunctions, it can lead to issues with the trailer brake system, potentially compromising the safety and performance of the vehicle.

OBDII Code C1596 2014 GMC Sierra - Trailer Brake Power Control Module Enable Circuit
C1596 2014 GMC Sierra Code - Trailer Brake Power Control Module Enable Circuit

Common Causes of C1596 2014 GMC Sierra

  1. Faulty Trailer Brake Power Control Module
  2. Damaged wiring or connectors in the enable circuit
  3. Corrosion or poor connection in the circuit
  4. Electrical issues in the trailer brake system
  5. Software malfunction in the control module

Symptoms of C1596 2014 GMC Sierra

  1. Trailer brakes not engaging properly
  2. ABS warning light illuminated on the dashboard
  3. Inconsistent braking performance while towing
  4. Trailer brake system failure
  5. Decreased braking power when towing a trailer

How to Fix C1596 2014 GMC Sierra

  1. Perform a thorough inspection of the trailer brake system and the enable circuit.
  2. Check for any visible damage to wiring, connectors, or the control module.
  3. Test the Trailer Brake Power Control Module for proper functionality.
  4. Repair or replace any damaged components in the enable circuit.
  5. Clear the diagnostic trouble codes and test the trailer brake system for proper operation.

Cost to Fix C1596 2014 GMC Sierra

The typical repair costs for addressing the C1596 code on a 2014 GMC Sierra can vary depending on the extent of the issue and the specific repairs needed. On average, the parts and labor for this repair could range from $200 to $500. However, it is important to note that diagnosis time and labor rates at auto repair shops can vary significantly based on location, vehicle make and model, and engine type. It is recommended to check with local auto repair shops for a more accurate estimate.

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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 C1596 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code C1596 in a 2014 GMC Sierra?

- Common symptoms include issues with the trailer brake power control module, such as the trailer brakes not functioning properly or the module failing to enable.

2. What can cause the OBDII code C1596 to appear in a 2014 GMC Sierra?

- The code C1596 typically indicates a problem with the enable circuit of the trailer brake power control module, which could be due to wiring issues, a faulty module, or a communication problem.

3. How can I diagnose the cause of OBDII code C1596 in my 2014 GMC Sierra?

- To diagnose the issue, you may need to inspect the wiring connected to the trailer brake power control module, check for any loose connections, and use a diagnostic scanner to read the code and pinpoint the exact cause.

4. Can I still drive my 2014 GMC Sierra with OBDII code C1596 present?

- It is not recommended to drive your vehicle with unresolved OBDII codes, as they can indicate potential safety hazards or affect the performance of your vehicle's braking system.

5. How can I repair OBDII code C1596 in my 2014 GMC Sierra?

- Repairing the code C1596 may involve fixing any wiring issues, replacing the trailer brake power control module if necessary, or addressing any communication problems between the module and the vehicle's system.

6. Is it safe to tow a trailer with my 2014 GMC Sierra if OBDII code C1596 is triggered?

- It is not advisable to tow a trailer if the trailer brake power control module is not functioning correctly, as this could compromise the effectiveness of the trailer brakes and pose a safety risk.

7. Can a DIY enthusiast fix OBDII code C1596 in a 2014 GMC Sierra?

- Depending on your skill level and access to tools, you may be able to address simple wiring issues causing the code C1596. However, for more complex problems or module replacements, it is recommended to seek professional assistance.

8. How much does it typically cost to repair OBDII code C1596 in a 2014 GMC Sierra?

- Repair costs for OBDII code C1596 can vary depending on the underlying issue, but they may involve expenses for wiring repairs, module replacements, or diagnostic services from a mechanic.

9. What are the long-term consequences of ignoring OBDII code C1596 in a 2014 GMC Sierra?

- Ignoring OBDII code C1596 could lead to continued issues with the trailer brake power control module, potential brake system failures, or safety hazards when towing a trailer.

10. Can resetting the OBDII system clear the C1596 code in a 2014 GMC Sierra?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing code C1596 is not addressed, the code is likely to reappear. It's essential to diagnose and fix the root cause of the problem.

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