AutoCodes – GMC – C0593 GMC

C0593 GMC Code - Right Rear Solenoid Circuit High

Quick Answer

The strut actuator is controlled by the Continuously Variable Road Sensing Suspension (CVRSS) module with a Pulse-Width Modulation (PWM) signal. Common causes include Faulty Right Rear Solenoid, Right Rear Solenoid harness is open or shorted, Right Rear Solenoid 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: C0593 GMC indicates Right Rear Solenoid Circuit High.
Common causes: Common causes include Faulty Right Rear Solenoid, Right Rear Solenoid harness is open or shorted, Right Rear Solenoid 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 686

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 29, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0593 GMC Description

The strut actuator is controlled by the Continuously Variable Road Sensing Suspension (CVRSS) module with a Pulse-Width Modulation (PWM) signal. Switching the voltage ON and OFF at a high frequency, or pulse width modulation of 2.0 kHz, controls the amount of current delivered to the actuator. By controlling the amount of current to the actuator the CVRSS module controls the damping force in the strut. A higher level of damping force is achieved by providing correspondingly higher current levels, relating to higher percentages of PWM duty cycle. The default damper state, no battery voltage is one that provides a minimum damping force. The CVRSS module periodically commands each strut actuator to a preset PWM duty cycle in order to override the normal PWM command. During this preset PWM duty cycle, the CVRSS module is able to perform a diagnostic test on each strut actuator to determine if a malfunction is present. The preset PWM command can be either an OFF or ON state duty cycle.

OBDII Code C0593 GMC - Right Rear Solenoid Circuit High - AutoCodes.com — C0593 GMC Code - Right Rear Solenoid Circuit High

What does this mean?

What are the Possible Causes of the DTC C0593 GMC?

Faulty Right Rear Solenoid
Right Rear Solenoid harness is open or shorted
Right Rear Solenoid circuit poor electrical connection

How to Fix the DTC C0593 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0593 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.

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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 C0593 GMC Code

1. What are the common symptoms of OBDII code C0593 GMC (Right Rear Solenoid Circuit High)?

The common symptoms include illuminated ABS warning light on the dashboard, potential loss of anti-lock braking system functionality, and unusual braking behavior.

2. What are the possible causes of OBDII code C0593 GMC?

The code C0593 typically indicates a malfunction in the right rear solenoid circuit of the anti-lock braking system. Potential causes include damaged wiring, a faulty solenoid, or a malfunctioning ABS control module.

3. How can I diagnose the cause of OBDII code C0593 GMC?

Diagnosing the cause of code C0593 involves using a diagnostic scanner to retrieve the specific error codes, conducting a visual inspection of the wiring and connectors, and performing tests on the solenoid and ABS control module.

4. Can I still drive my vehicle with OBDII code C0593 GMC active?

It is not recommended to drive your vehicle with an active C0593 code as it may indicate a problem with the anti-lock braking system, compromising your vehicle's braking performance and safety.

5. How can I repair OBDII code C0593 GMC?

Repairing code C0593 typically involves repairing or replacing damaged wiring, replacing the faulty solenoid, or addressing any issues with the ABS control module. It is advisable to seek professional help for proper diagnosis and repair.

6. Are there any DIY tips for fixing OBDII code C0593 GMC?

While basic visual inspections and checks can be performed by DIY enthusiasts, repairing OBDII code C0593 often requires specialized tools and expertise. It is recommended to consult a professional mechanic for accurate diagnosis and repair.

7. How much does it cost to fix OBDII code C0593 GMC?

The cost of fixing OBDII code C0593 can vary depending on the underlying cause of the issue, parts needed for replacement, and labor costs. It is advisable to obtain quotes from several mechanics to compare prices.

8. Can OBDII code C0593 GMC be triggered intermittently?

Yes, OBDII code C0593 can be triggered intermittently, especially if the issue is related to a loose connection or intermittent fault in the right rear solenoid circuit. It is important to address the problem promptly to avoid safety risks.

9. Will resetting the OBDII system clear code C0593 GMC?

Resetting the OBDII system may temporarily clear the code C0593, but if the underlying issue is not addressed, the code is likely to reappear. It is crucial to diagnose and repair the root cause of the problem to prevent recurrence.

10. Is OBDII code C0593 GMC a serious issue?

Yes, OBDII code C0593 indicating a right rear solenoid circuit high fault in the ABS system is a serious issue as it can affect the vehicle's braking performance and safety. It is recommended to address this problem promptly.