AutoCodes – GMC – P0581 GMC

P0581 GMC Code - Cruise Control Multifunction Switch Circuit Low Voltage

Quick Answer

The Cruise Control Switch is an input to the Body Control Module (BCM). Common causes include Faulty Cruise Control Switch, Cruise Control Switch harness is open or shorted, Cruise Control Switch 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: P0581 GMC indicates Cruise Control Multifunction Switch Circuit Low Voltage.
Common causes: Common causes include Faulty Cruise Control Switch, Cruise Control Switch harness is open or shorted, Cruise Control Switch 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 1,184

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 Mar 25, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0581 GMC Description

The Cruise Control Switch is an input to the Body Control Module (BCM). The BCM monitors the cruise control on/off, set/coast, resume/accelerate and cancel switches via the cruise control switch signal circuit in order to detect when the driver has requested to perform a cruise control function. The BCM detects a specific voltage signal on the cruise control switch signal circuit when a switch is applied. The Engine Control Module (ECM) receives the requested cruise control switch function from the BCM via a serial data message. The Diagnostic Trouble Code (DTC) will be set when the ECM detects an invalid voltage signal on the cruise control switch signal circuit.

OBDII Code P0581 GMC - Cruise Control Multifunction Switch Circuit Low Voltage - AutoCodes.com — P0581 GMC Code - Cruise Control Multifunction Switch Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0581 GMC?

Faulty Cruise Control Switch
Cruise Control Switch harness is open or shorted
Cruise Control Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC P0581 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 P0581 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 P0581 GMC code?

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Need Help with the Code?

Get the P0581 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

P0581 2014 GMC Sierra — Cruise Control Multifunction Switch Circuit Low Voltage
P0581 2015 GMC Sierra — Cruise Control Multifunction Switch Circuit Low Voltage
P0581 2016 GMC Sierra — Cruise Control Multifunction Switch Circuit Low Voltage
P0581 2017 GMC Sierra — Cruise Control Multifunction Switch Circuit Low Voltage
P0581 2018 GMC Sierra — Cruise Control Multifunction Switch Circuit Low Voltage

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 P0581 GMC Code

1. What are the common symptoms of OBDII code P0581 in a GMC vehicle?

- Common symptoms include inoperative cruise control system, illuminated check engine light, and difficulty engaging/disengaging cruise control.

2. What does the OBDII code P0581 indicate in a GMC vehicle?

- The code P0581 indicates a low voltage condition in the cruise control multifunction switch circuit.

3. What are the possible causes of OBDII code P0581 in a GMC vehicle?

- Possible causes include a faulty cruise control switch, damaged wiring or connectors in the circuit, or a defective cruise control module.

4. How can I diagnose the OBDII code P0581 in my GMC vehicle?

- Diagnose the code by visually inspecting the cruise control switch and its wiring, testing the switch for proper functionality, and using a scan tool to retrieve and clear the code.

5. Can I still drive my GMC vehicle with the OBDII code P0581 present?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to restore proper cruise control functionality.

6. How can I repair OBDII code P0581 in my GMC vehicle?

- Repair options include replacing the faulty cruise control switch, repairing damaged wiring or connectors, or replacing the cruise control module if necessary.

7. Is it possible to reset the OBDII code P0581 in a GMC vehicle without repairs?

- While clearing the code may temporarily turn off the check engine light, it is important to address the root cause of the issue to prevent the code from reoccurring.

8. Can a DIY enthusiast fix OBDII code P0581 in a GMC vehicle?

- Depending on the level of expertise, DIY enthusiasts may be able to diagnose and repair the issue by following proper diagnostic procedures and utilizing the necessary tools.

9. Will fixing OBDII code P0581 improve fuel efficiency in my GMC vehicle?

- While fixing the code may not directly impact fuel efficiency, restoring proper cruise control functionality can help optimize driving conditions and potentially improve fuel consumption.

10. How can I prevent OBDII code P0581 from occurring in my GMC vehicle in the future?

- Regularly inspect and maintain the cruise control system, including checking for any signs of wear or damage, to prevent issues that may trigger the code P0581.