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Engine-Codes – GMC – C0585 2015 GMC Sierra

C0585 2015 GMC Sierra Code - Left Rear Shock Absorber Actuator Circuit

Quick Answer

The C0585 diagnostic trouble code (DTC) for a 2015 GMC Sierra relates to the Left Rear Shock Absorber Actuator Circuit. Common causes include Faulty shock absorber actuator, Wiring or connector issues in the actuator circuit, Corrosion or damage to the actuator circuit components. 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
C0585 2015 GMC Sierra indicates Left Rear Shock Absorber Actuator Circuit.
Common causes
Common causes include Faulty shock absorber actuator, Wiring or connector issues in the actuator circuit, Corrosion or damage to the actuator circuit components.
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 C0585 2015 GMC Sierra Description

The C0585 diagnostic trouble code (DTC) for a 2015 GMC Sierra relates to the Left Rear Shock Absorber Actuator Circuit. This code indicates a problem with the actuator circuit that controls the shock absorber on the left rear side of the vehicle. Shock absorbers are crucial components of a vehicle's suspension system, responsible for absorbing the impact of bumps and uneven road surfaces to provide a smoother and more controlled ride.

OBDII Code C0585 2015 GMC Sierra - Left Rear Shock Absorber Actuator Circuit
C0585 2015 GMC Sierra Code - Left Rear Shock Absorber Actuator Circuit

Common Causes of C0585 2015 GMC Sierra

  1. Faulty shock absorber actuator
  2. Wiring or connector issues in the actuator circuit
  3. Corrosion or damage to the actuator circuit components
  4. Electronic control module (ECM) failure
  5. Software or programming issues related to the shock absorber system

Symptoms of C0585 2015 GMC Sierra

  1. Harsh or bouncy ride quality
  2. Excessive bouncing or bottoming out over bumps
  3. Poor handling or stability, especially during turns
  4. Illuminated warning light on the dashboard (such as the Check Engine Light or Suspension Warning Light)

How to Fix C0585 2015 GMC Sierra

  1. Begin by conducting a visual inspection of the shock absorber actuator and its wiring for any visible damage, corrosion, or loose connections.
  2. Use a multimeter to test the continuity and voltage of the actuator circuit to identify any electrical faults.
  3. If necessary, replace the faulty shock absorber actuator or repair any damaged wiring or connectors.
  4. Clear the DTC from the vehicle's ECM using a diagnostic scan tool and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, further diagnosis may be required to pinpoint the exact cause of the circuit malfunction.

Cost to Fix C0585 2015 GMC Sierra

The typical repair costs for addressing the Left Rear Shock Absorber Actuator Circuit issue can vary depending on the extent of the problem and the specific components that need to be replaced. On average, the parts for a shock absorber actuator can range from $200 to $500, while labor costs can add an additional $100 to $300. Overall, the total repair cost for this issue may fall between $300 and $800. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local providers for a more accurate estimate based on your location and vehicle specifics.

What does this mean?

Tech Notes for C0585 2015 GMC Sierra

C0585:01 Left Rear Shock Absorber Actuator Circuit Short to Battery

C0585:02 Left Rear Shock Absorber Actuator Circuit Short to Ground

C0585:04 Left 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 C0585 2015 GMC Sierra Code

1. What does the OBDII code C0585 mean on a 2015 GMC Sierra?

C0585 indicates an issue with the left rear shock absorber actuator circuit, which is part of the vehicle's suspension system.

2. What are the common symptoms of code C0585?

Symptoms may include reduced ride quality, a Service Suspension System warning on the dashboard, and possibly a noticeable difference in handling or stability.

3. What causes the C0585 code to appear?

Common causes include a faulty shock absorber actuator, damaged wiring or connectors in the circuit, or failure of the suspension control module.

4. Can I drive my 2015 GMC Sierra with the C0585 code?

Yes, but it’s not recommended for extended periods as it may lead to further suspension damage or reduced handling performance.

5. How do I diagnose the C0585 code?

Diagnosis involves inspecting the wiring and connectors for damage, testing the left rear shock actuator for functionality, and using a scan tool to check for related codes.

6. How do I fix the C0585 code?

Repairs may include replacing the left rear shock actuator, repairing damaged wiring or connectors, or reprogramming or replacing the suspension control module if needed.

7. How much does it cost to fix the C0585 code?

Repair costs vary but can range from $200 to $800, depending on whether the actuator, wiring, or control module needs replacement.

8. Can a bad suspension control module cause code C0585?

Yes, a malfunctioning suspension control module can cause communication issues with the shock absorber actuator, triggering the code.

9. How can I prevent the C0585 code from recurring?

Regularly inspect the suspension system, keep connectors free of corrosion, and address suspension-related issues promptly to avoid future problems.

10. Do I need special tools to repair the C0585 code?

Yes, a professional-grade scan tool is often required to diagnose and clear the code, and in some cases, specialized tools may be needed to replace the shock actuator.

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