AutoCodes – GMC – C0658 GMC

C0658 GMC Code - Level Control Compressor Circuit High

Quick Answer

The Automatic Level Control compressor is switched ON and OFF using an Electronic Level Control (ELC) compressor relay which is controlled by the Electronic Suspension Control (ESC) module. Common causes include Faulty Level Control Compressor, Level Control Compressor harness is open or shorted, Level Control Compressor 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: C0658 GMC indicates Level Control Compressor Circuit High.
Common causes: Common causes include Faulty Level Control Compressor, Level Control Compressor harness is open or shorted, Level Control Compressor 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 1,029

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 31, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0658 GMC Description

The Automatic Level Control compressor is switched ON and OFF using an Electronic Level Control (ELC) compressor relay which is controlled by the Electronic Suspension Control (ESC) module. The ESC module circuitry provides a switched path to ground whenever compressor activity is required. This drive circuit is also continually monitored to determine if the voltage level agrees with the commanded state.

OBDII Code C0658 GMC - Level Control Compressor Circuit High - AutoCodes.com — C0658 GMC Code - Level Control Compressor Circuit High

What does this mean?

What are the Possible Causes of the DTC C0658 GMC?

Faulty Level Control Compressor
Level Control Compressor harness is open or shorted
Level Control Compressor circuit poor electrical connection

How to Fix the DTC C0658 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 C0658 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 C0658 GMC Code

1. What are the common symptoms of OBDII code C0658 GMC?

- Common symptoms include issues with the vehicle's suspension system, such as uneven ride height, a sagging rear end, or a noisy compressor.

2. What are the possible causes of OBDII code C0658 GMC?

- The code C0658 indicates a fault in the Level Control Compressor Circuit High, which can be caused by a malfunctioning compressor, damaged wiring, or a faulty compressor relay.

3. How can I diagnose the cause of OBDII code C0658 GMC?

- Diagnosing the cause typically involves checking the compressor for proper operation, inspecting the wiring for any damage or corrosion, and testing the compressor relay for functionality.

4. Can I still drive my vehicle with OBDII code C0658 GMC?

- It is not recommended to drive the vehicle with this code present, as it can affect the suspension system's performance and potentially lead to further damage.

5. How can I repair OBDII code C0658 GMC?

- Repairing the code usually involves replacing a faulty compressor, repairing damaged wiring, or replacing a malfunctioning compressor relay.

6. Is it safe to reset the OBDII code C0658 GMC without fixing the issue?

- It is not recommended to reset the code without addressing the underlying problem, as it will likely reappear and may cause further issues with the suspension system.

7. Can a DIY enthusiast fix OBDII code C0658 GMC?

- While some aspects of diagnosing and repairing this code can be done by a DIY enthusiast, it is recommended to consult a professional mechanic for a proper diagnosis and repair.

8. How much does it typically cost to repair OBDII code C0658 GMC?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Will fixing OBDII code C0658 GMC improve my vehicle's ride quality?

- Yes, addressing this code and repairing the issue with the level control compressor circuit can help restore proper suspension function and improve ride quality.

10. How often does OBDII code C0658 GMC occur in GMC vehicles?

- The occurrence of this code can vary, but it is relatively common in GMC vehicles with air suspension systems, especially in older models or those with high mileage.