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P0564 2016 GMC Sierra Code - Cruise Control Multifunction Switch Circuit

Quick Answer

The P0564 diagnostic trouble code (DTC) indicates a malfunction in the cruise control multifunction switch circuit in a 2016 GMC Sierra. Common causes include Faulty cruise control multifunction switch, Damaged or corroded wiring in the cruise control circuit, Malfunctioning electronic control unit (ECU) that processes signals from the switch. 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
P0564 2016 GMC Sierra indicates Cruise Control Multifunction Switch Circuit.
Common causes
Common causes include Faulty cruise control multifunction switch, Damaged or corroded wiring in the cruise control circuit, Malfunctioning electronic control unit (ECU) that processes signals from the switch.
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.
What is this?
Table of contents Created and updated by William Orellana on Oct 21, 2024
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Code P0564 2016 GMC Sierra Description

The P0564 diagnostic trouble code (DTC) indicates a malfunction in the cruise control multifunction switch circuit in a 2016 GMC Sierra. This switch is responsible for controlling various functions of the cruise control system, including setting, adjusting, and canceling the cruise speed. When the vehicle's onboard diagnostic system detects an issue with the circuit, it triggers this code, indicating that the cruise control system may not operate as intended.

OBDII Code P0564 2016 GMC Sierra - Cruise Control Multifunction Switch Circuit
P0564 2016 GMC Sierra Code - Cruise Control Multifunction Switch Circuit

Common Causes of P0564 2016 GMC Sierra

  1. Faulty cruise control multifunction switch.
  2. Damaged or corroded wiring in the cruise control circuit.
  3. Malfunctioning electronic control unit (ECU) that processes signals from the switch.
  4. Poor electrical connections or grounding issues within the circuit.
  5. Software issues or glitches in the vehicle's onboard computer system.

Symptoms of P0564 2016 GMC Sierra

  1. Inability to set or maintain cruise control speed.
  2. Cruise control system disengages unexpectedly.
  3. Warning lights illuminated on the dashboard, such as the cruise control indicator.
  4. Erratic acceleration or deceleration when cruise control is engaged.
  5. Difficulty in using other functions associated with the multifunction switch, such as the horn or turn signals.

How to Fix P0564 2016 GMC Sierra

  1. Diagnostic Testing: Start with a thorough diagnostic scan to confirm the P0564 code and check for any additional trouble codes that may provide further insight into the issue.
  2. Inspect the Multifunction Switch: Examine the cruise control multifunction switch for signs of wear, damage, or corrosion. If the switch is faulty, it will need to be replaced.
  3. Check Wiring and Connections: Inspect the wiring harness and connectors associated with the cruise control system for any signs of damage, corrosion, or loose connections. Repair or replace any damaged components as necessary.
  4. Test the ECU: If the switch and wiring appear to be in good condition, test the vehicle's ECU to ensure it is functioning correctly and is capable of processing signals from the cruise control switch.
  5. Clear Codes and Test Drive: After repairs, clear the diagnostic trouble codes and take the vehicle for a test drive to ensure that the cruise control system operates correctly and that the P0564 code does not reappear.

Cost to Fix P0564 2016 GMC Sierra

The typical repair costs for addressing a P0564 code can vary significantly based on the specific issue identified during diagnostics. On average, you might expect to pay between $100 and $400 for parts and labor. This estimate includes the cost of a new multifunction switch (if needed), wiring repairs, and labor charges.

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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 P0564 2016 GMC Sierra Code

1. What does the OBDII code P0564 mean on a 2016 GMC Sierra?

P0564 indicates an issue with the Cruise Control Multifunction Switch Circuit, meaning the vehicle's computer is detecting an abnormal signal from the cruise control switch.

2. What are the symptoms of code P0564 on a 2016 GMC Sierra?

Common symptoms include the cruise control not functioning, intermittent operation of the system, or the cruise control indicator light failing to turn on.

3. What causes the P0564 code in a 2016 GMC Sierra?

Potential causes include a faulty cruise control multifunction switch, damaged wiring or connectors in the switch circuit, or a malfunctioning engine control module (ECM).

4. Can a blown fuse cause the P0564 code on a 2016 GMC Sierra?

Yes, a blown fuse related to the cruise control system can interrupt the circuit and trigger the P0564 code.

5. How do I diagnose the P0564 code on my 2016 GMC Sierra?

Start by checking the cruise control switch for proper operation, inspect the wiring and connectors for damage, and use a scan tool to verify the signal from the switch to the ECM.

6. Can I still drive my 2016 GMC Sierra with a P0564 code?

Yes, you can drive the vehicle, but the cruise control system may not work. Addressing the issue promptly is recommended to prevent further electrical problems.

7. How do I fix the P0564 code on a 2016 GMC Sierra?

Repairs may include replacing a faulty cruise control switch, repairing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.

8. How much does it cost to repair the P0564 code on a 2016 GMC Sierra?

Repair costs vary but typically range from $100 to $300, depending on whether the issue lies with the switch, wiring, or ECM.

9. Can a bad brake pedal switch cause the P0564 code?

While uncommon, a malfunctioning brake pedal switch could interfere with the cruise control system and contribute to this code.

10. Do I need special tools to fix the P0564 code on a 2016 GMC Sierra?

A basic multimeter and an OBDII scan tool are often sufficient for diagnosing and addressing the issue. Advanced diagnostics may require manufacturer-specific tools.

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