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Engine-Codes – GMC – C0590 2018 GMC Sierra

C0590 2018 GMC Sierra Code - Right Rear Shock Absorber Actuator Circuit

Quick Answer

The C0590 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates a problem with the right rear shock absorber actuator circuit. Common causes include Damaged wiring or connectors, Faulty shock absorber actuator, Malfunctioning 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
C0590 2018 GMC Sierra indicates Right Rear Shock Absorber Actuator Circuit.
Common causes
Common causes include Damaged wiring or connectors, Faulty shock absorber actuator, Malfunctioning 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 14, 2024
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Code C0590 2018 GMC Sierra Description

The C0590 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates a problem with the right rear shock absorber actuator circuit. In modern vehicles, shock absorbers play a crucial role in maintaining stability, control, and comfort while driving. The shock absorber actuator circuit is responsible for controlling the damping force of the shock absorber, adjusting it based on driving conditions to ensure optimal performance and ride quality.

OBDII Code C0590 2018 GMC Sierra - Right Rear Shock Absorber Actuator Circuit
C0590 2018 GMC Sierra Code - Right Rear Shock Absorber Actuator Circuit

Common Causes of C0590 2018 GMC Sierra

  1. Damaged wiring or connectors
  2. Faulty shock absorber actuator
  3. Malfunctioning control module
  4. Poor electrical connection
  5. Corrosion or moisture damage

Symptoms of C0590 2018 GMC Sierra

  1. Rough or bumpy ride
  2. Reduced handling and stability
  3. Uneven tire wear
  4. Illuminated warning light on the dashboard
  5. Abnormal noises coming from the suspension

How to Fix C0590 2018 GMC Sierra

  1. Begin by conducting a thorough inspection of the right rear shock absorber actuator circuit, checking for any visible damage or loose connections.
  2. Use a multimeter to test the continuity and voltage of the circuit components, including the wiring, connectors, actuator, and control module.
  3. Replace any damaged or faulty components, such as wiring harnesses, connectors, or the shock absorber actuator itself.
  4. Clear the DTC from the vehicle's onboard computer using a diagnostic scan tool.
  5. Test drive the vehicle to ensure that the issue has been resolved and that the right rear shock absorber actuator circuit is functioning properly.

Cost to Fix C0590 2018 GMC Sierra

The typical repair costs for addressing a right rear shock absorber actuator circuit issue can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the parts for this repair could range from $200 to $500, while the labor costs may add another $150 to $300. Keep in mind that these estimates are general guidelines, and actual costs can vary based on factors such as location, vehicle make and model, and the rates of the auto repair shop. It's recommended to obtain a detailed quote from a trusted mechanic or dealership to get a more accurate cost estimate for this repair.

What does this mean?

Tech Notes for C0590 2018 GMC Sierra

C0590:01 Right Rear Shock Absorber Actuator Circuit Short to Battery

C0590:02 Right Rear Shock Absorber Actuator Circuit Short to Ground

C0590:04 Right Rear Shock Absorber Actuator Circuit Open

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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 C0590 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code C0590 in a 2018 GMC Sierra?

- Common symptoms include a warning light on the dashboard, rough ride quality, and issues with the right rear shock absorber.

2. What does the OBDII code C0590 for the Right Rear Shock Absorber Actuator Circuit mean?

- This code indicates a malfunction in the actuator circuit responsible for controlling the right rear shock absorber in the vehicle.

3. What are the possible causes of OBDII code C0590 in a 2018 GMC Sierra?

- Possible causes include damaged wiring or connectors, a faulty shock absorber actuator, or issues with the control module.

4. How can I diagnose the issue related to OBDII code C0590 in my 2018 GMC Sierra?

- A thorough inspection of the wiring and connectors, testing the shock absorber actuator, and checking the control module are essential steps in diagnosing the problem.

5. Can driving with OBDII code C0590 present cause further damage to my 2018 GMC Sierra?

- Driving with this code may result in poor ride quality and potential further damage to the shock absorber system, so it is advisable to address the issue promptly.

6. Is it safe to continue driving my 2018 GMC Sierra with OBDII code C0590?

- It is not recommended to drive the vehicle with this code active, as it can affect the performance and stability of the vehicle.

7. How can I reset the OBDII code C0590 in my 2018 GMC Sierra after repairing the issue?

- After fixing the underlying problem, the code can be reset using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes.

8. Are there any DIY repair tips for addressing OBDII code C0590 in a 2018 GMC Sierra?

- DIY repair tips include checking for loose or damaged wiring, ensuring proper connections, and inspecting the shock absorber actuator for any visible issues.

9. Do I need a professional mechanic to fix OBDII code C0590 in my 2018 GMC Sierra?

- While some DIY repairs are possible, it is advisable to consult a professional mechanic for a comprehensive diagnosis and proper repair of the issue.

10. How much can I expect to pay for repairing OBDII code C0590 in a 2018 GMC Sierra?

- Repair costs can vary depending on the exact cause of the issue, but it is recommended to budget for diagnostic fees, parts replacement, and labor costs when addressing this code.

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