AutoCodes – GMC – C0585 GMC

C0585 GMC Code - Left Rear Shock Absorber Actuator Circuit

Quick Answer

The Suspension Control Module commands variable levels of current to each shock absorber actuator in response to rough road, braking, or abrupt steering maneuver driving conditions. Common causes include Faulty Left Rear Shock Absorber Actuator, Left Rear Shock Absorber Actuator harness is open or shorted, Left Rear Shock Absorber Actuator 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: C0585 GMC indicates Left Rear Shock Absorber Actuator Circuit.
Common causes: Common causes include Faulty Left Rear Shock Absorber Actuator, Left Rear Shock Absorber Actuator harness is open or shorted, Left Rear Shock Absorber Actuator 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.

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Code Popularity 5,198

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 16, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C0585 GMC Description

The Suspension Control Module commands variable levels of current to each shock absorber actuator in response to rough road, braking, or abrupt steering maneuver driving conditions. The current variation is performed by pulse width modulation (PWM) of the system voltage. The Suspension Control Module continuously measures the actual current of each actuator. When a deviation between commanded and actual current is detected, a Diagnostic Trouble Code (DTC) is set.

OBDII Code C0585 GMC - Left Rear Shock Absorber Actuator Circuit - AutoCodes.com — C0585 GMC Code - Left Rear Shock Absorber Actuator Circuit

What does this mean?

What are the Possible Causes of the DTC C0585 GMC?

Faulty Left Rear Shock Absorber Actuator
Left Rear Shock Absorber Actuator harness is open or shorted
Left Rear Shock Absorber Actuator circuit poor electrical connection
Faulty Suspension Control Module

How to Fix the DTC C0585 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 does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0585 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.

Need more information about the C0585 GMC code?

Need more information on how to fix the C0585 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0585 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

C0585 2014 GMC Sierra — Left Rear Shock Absorber Actuator Circuit
C0585 2015 GMC Sierra — Left Rear Shock Absorber Actuator Circuit
C0585 2016 GMC Sierra — Left Rear Shock Absorber Actuator Circuit
C0585 2017 GMC Sierra — Left Rear Shock Absorber Actuator Circuit
C0585 2018 GMC Sierra — Left Rear Shock Absorber Actuator Circuit

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 GMC Code

1. What are the common symptoms of OBDII code C0585 GMC?

- The common symptoms include a malfunctioning left rear shock absorber, rough ride quality, and uneven tire wear.

2. What are the possible causes of OBDII code C0585 GMC?

- Possible causes may include a faulty left rear shock absorber actuator, damaged wiring or connectors, or a malfunctioning control module.

3. How can I diagnose the issue related to OBDII code C0585 GMC?

- Diagnose the issue by inspecting the left rear shock absorber actuator, checking the wiring and connectors for damage, and using a diagnostic scanner to read the trouble codes.

4. Can I still drive my vehicle with OBDII code C0585 GMC?

- It is not recommended to drive the vehicle with this code as it can affect the vehicle's stability and handling.

5. How can I repair OBDII code C0585 GMC?

- Repair options may include replacing the left rear shock absorber actuator, repairing or replacing damaged wiring or connectors, and resetting the trouble code with a diagnostic scanner.

6. Is it possible to reset OBDII code C0585 GMC without fixing the underlying issue?

- Resetting the code without addressing the underlying issue may temporarily clear the warning light, but the problem will likely reoccur.

7. Can a DIY enthusiast fix OBDII code C0585 GMC at home?

- Depending on your mechanical skills and access to tools, it is possible to address this code at home by following repair guides and using the necessary equipment.

8. How much does it typically cost to repair OBDII code C0585 GMC at a professional auto repair shop?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $200 to $500 at a professional auto repair shop.

9. Will OBDII code C0585 GMC cause my vehicle to fail an emissions test?

- Yes, this code can cause your vehicle to fail an emissions test as it indicates a problem with the left rear shock absorber actuator circuit.

10. Is it safe to ignore OBDII code C0585 GMC and continue driving?

- Ignoring this code can lead to potential safety issues and further damage to your vehicle's suspension system, so it is not recommended to ignore it.