AutoCodes – GMC – C0625 2018 GMC Sierra

C0625 2018 GMC Sierra Code - Left Rear Position Sensor Circuit

Quick Answer

The Suspension Control Module supplies a 5 V reference signal to each Suspension Position Sensor. Common causes include Faulty Left Rear Position Sensor, Left Rear Position Sensor harness is open or shorted, Left Rear Position Sensor 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: C0625 2018 GMC Sierra indicates Left Rear Position Sensor Circuit.
Common causes: Common causes include Faulty Left Rear Position Sensor, Left Rear Position Sensor harness is open or shorted, Left Rear Position Sensor 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 229

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
Cost to Diagnose
FAQs
Comments
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Code C0625 2018 GMC Sierra Description

The Suspension Control Module supplies a 5 V reference signal to each Suspension Position Sensor. The Suspension Position Sensors supply a signal of 0.35–4.75 V to the Suspension Control Module which represents the position between the body and the wheel. The sensors are also grounded through the Suspension Control Module. The Diagnostic Trouble Code (DTC) will be set when the Suspension Control Module measures a Suspension Position Sensor signal less than 0.35 V or greater than 4.75 V for more than 5 s while the vehicle is operated under normal driving conditions.

OBDII Code C0625 2018 GMC Sierra - Left Rear Position Sensor Circuit - AutoCodes.com — C0625 2018 GMC Sierra Code - Left Rear Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC C0625 2018 GMC Sierra?

Faulty Left Rear Position Sensor
Left Rear Position Sensor harness is open or shorted
Left Rear Position Sensor circuit poor electrical connection
Faulty Suspension Control Module

How to Fix the DTC C0625 2018 GMC Sierra?

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 C0625 2018 GMC Sierra 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 C0625 2018 GMC Sierra code?

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Need Help with the Code?

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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 C0625 2018 GMC Sierra Code

1. What does the OBDII code C0625 mean on a 2018 GMC Sierra?

C0625 indicates an issue with the Left Rear Position Sensor Circuit, which monitors the suspension height or position on the left rear side of the vehicle.

2. What are the symptoms of the C0625 code on a 2018 GMC Sierra?

Common symptoms include a suspension warning light, uneven ride height, poor ride quality, or noticeable sagging on the left rear side of the vehicle.

3. What causes the C0625 code to appear?

Potential causes include a faulty left rear position sensor, damaged or corroded wiring, loose electrical connections, or a malfunctioning suspension control module.

4. Can I drive my 2018 GMC Sierra with the C0625 code active?

While the vehicle may still be drivable, itâ€™s not recommended as it could lead to further suspension damage or unsafe driving conditions due to improper ride height.

5. How do I diagnose the C0625 code on my GMC Sierra?

Diagnosis involves inspecting the left rear position sensor, checking the wiring and connectors for damage or corrosion, and using a scan tool to test the sensorâ€™s output and module communication.

6. How do I fix the C0625 code on a 2018 GMC Sierra?

Repairs may include replacing the left rear position sensor, repairing or replacing damaged wiring, cleaning corroded connections, or reprogramming/replacing the suspension control module.

7. How much does it cost to repair the C0625 code?

The repair cost can vary, but replacing a position sensor typically ranges from $100 to $300, including parts and labor. Wiring repairs may add additional costs.

8. Is the C0625 code a common issue on the 2018 GMC Sierra?

While not extremely common, it can occur on vehicles with air suspension systems or those frequently exposed to harsh road or weather conditions.

9. Can I reset the C0625 code without repairing the issue?

Clearing the code with a scan tool may temporarily turn off the warning light, but the problem will likely return unless the underlying issue is addressed.

10. Does the C0625 code affect other systems in the vehicle?

Yes, it can affect the suspension system's performance and may contribute to uneven tire wear or handling issues if left unaddressed.