AutoCodes – GMC – C005A GMC

C005A GMC Code - Rear Wheel Speed Sensor Circuit

Quick Answer

The wheel speed sensor receives ignition voltage from the Electronic Brake Control Module (EBCM) and provides a DC square wave signal back to the module. Common causes include Faulty Rear Wheel Speed Sensor, Rear Wheel Speed Sensor harness is open or shorted, Rear Wheel Speed 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: C005A GMC indicates Rear Wheel Speed Sensor Circuit .
Common causes: Common causes include Faulty Rear Wheel Speed Sensor, Rear Wheel Speed Sensor harness is open or shorted, Rear Wheel Speed 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 1,133

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 Nov 21, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C005A GMC Description

The wheel speed sensor receives ignition voltage from the Electronic Brake Control Module (EBCM) and provides a DC square wave signal back to the module. As the wheel spins, the EBCM uses the frequency of the square wave signal to calculate the wheel speed.

OBDII Code C005A GMC - Rear Wheel Speed Sensor Circuit - AutoCodes.com — C005A GMC Code - Rear Wheel Speed Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC C005A GMC?

Faulty Rear Wheel Speed Sensor
Rear Wheel Speed Sensor harness is open or shorted
Rear Wheel Speed Sensor circuit poor electrical connection
Faulty Electronic Brake Control Module (EBCM)

How to Fix the DTC C005A 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 C005A 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 C005A GMC Code

1. What are the common symptoms of OBDII code C005A GMC related to the Rear Wheel Speed Sensor Circuit?

The common symptoms include ABS warning light illuminated on the dashboard, traction control issues, and potential loss of stability control.

2. What are some possible causes of OBDII code C005A GMC indicating an issue with the Rear Wheel Speed Sensor Circuit?

Potential causes include a faulty rear wheel speed sensor, damaged wiring or connectors, sensor misalignment, or issues with the ABS module.

3. How can I diagnose the root cause of OBDII code C005A GMC associated with the Rear Wheel Speed Sensor Circuit?

You can diagnose the issue by performing a visual inspection of the sensor and its connections, testing the sensor with a multimeter, checking for damaged wiring, and using a scan tool to retrieve more specific diagnostic trouble codes.

4. What are some repair tips for addressing OBDII code C005A GMC in relation to the Rear Wheel Speed Sensor Circuit?

Repair tips include cleaning the sensor and its mounting surface, ensuring proper sensor alignment during installation, replacing damaged wiring or connectors, and resetting the fault codes after completing repairs.

5. Can I drive my GMC vehicle with OBDII code C005A related to the Rear Wheel Speed Sensor Circuit?

It is not recommended to drive the vehicle with this code present, as it can affect the proper functioning of the ABS and stability control systems, potentially compromising safety.

6. How much does it typically cost to repair OBDII code C005A GMC associated with the Rear Wheel Speed Sensor Circuit?

The cost of repair can vary depending on the specific issue and whether you choose to DIY or seek professional help. It may range from around $100 for a DIY sensor replacement to a few hundred dollars for more complex repairs at a dealership or mechanic.

7. Can a Rear Wheel Speed Sensor Circuit issue cause other problems in my GMC vehicle?

Yes, a malfunctioning rear wheel speed sensor can lead to inaccurate speed readings, affecting the ABS, traction control, and stability control systems, potentially compromising overall vehicle safety.

8. How long does it usually take to repair OBDII code C005A GMC related to the Rear Wheel Speed Sensor Circuit?

The repair time can vary depending on the extent of the issue and your experience level. Simple sensor replacements may take around 1-2 hours, while more complex repairs involving wiring or module issues may take longer.

9. Are there any preventive measures to avoid encountering OBDII code C005A GMC for the Rear Wheel Speed Sensor Circuit in the future?

Regularly inspecting and maintaining the wheel speed sensors, ensuring proper wheel alignment, and promptly addressing any ABS warning lights can help prevent issues with the Rear Wheel Speed Sensor Circuit.