AutoCodes – Chevrolet – P056C 2017 Chevrolet Silverado

P056C 2017 Chevrolet Silverado Code - Cruise Control Cancel Switch Circuit

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: P056C 2017 Chevrolet Silverado indicates Cruise Control Cancel Switch Circuit.
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 255

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 P056C 2017 Chevrolet Silverado 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 BCM monitors the cruise control switch. The BCM sets the OBDII code when the cruise control switch is not to factory specifications. The BCM detects an invalid voltage signal on the cruise control switch signal circuit for greater than 2 seconds and sends a serial data message to the ECM. The ECM sets the Diagnostic Trouble Code (DTC) when the message is received.

OBDII Code P056C 2017 Chevrolet Silverado - Cruise Control Cancel Switch Circuit - AutoCodes.com — P056C 2017 Chevrolet Silverado Code - Cruise Control Cancel Switch Circuit

What does this mean?

What are the Possible Causes of the DTC P056C 2017 Chevrolet Silverado?

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 P056C 2017 Chevrolet Silverado?

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 P056C 2017 Chevrolet Silverado 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 P056C 2017 Chevrolet Silverado code?

Need more information on how to fix the P056C 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P056C 2017 Chevrolet Silverado Code

1. What does the OBDII code P056C mean on a 2017 Chevrolet Silverado?

P056C indicates a fault in the Cruise Control Cancel Switch Circuit, which is responsible for deactivating cruise control when the brake or clutch pedal is pressed.

2. What are the symptoms of code P056C in a 2017 Chevrolet Silverado?

Common symptoms include cruise control not functioning, the cruise control shutting off unexpectedly, or the check engine light illuminating.

3. What causes the P056C code to appear on a 2017 Chevrolet Silverado?

Possible causes include a faulty cruise control cancel switch, damaged wiring or connectors in the circuit, or issues with the brake pedal position sensor.

4. Can I still drive my 2017 Chevrolet Silverado with the P056C code?

Yes, the vehicle remains drivable, but cruise control functionality may be impaired, and the check engine light will stay on until the issue is resolved.

5. How do I diagnose the P056C code on a 2017 Chevrolet Silverado?

Diagnose the issue by using a scan tool to read live data, inspecting the cruise control cancel switch and related wiring for damage, and testing the brake pedal position sensor.

6. How can I fix the P056C code in my 2017 Chevrolet Silverado?

Repairs may include replacing the cruise control cancel switch, repairing or replacing damaged wiring or connectors, or recalibrating or replacing the brake pedal position sensor.

7. How much does it cost to repair the P056C code on a 2017 Chevrolet Silverado?

Repair costs vary, but replacing the cruise control cancel switch typically ranges from $100 to $300, including parts and labor.

8. Can a blown fuse cause the P056C code in a 2017 Chevrolet Silverado?

While unlikely, a blown fuse related to the cruise control system may contribute to this issue. Itâ€™s worth checking the fuses as part of the diagnostic process.

9. Will clearing the P056C code with a scanner fix the problem?

Clearing the code will turn off the check engine light temporarily, but the issue will reoccur unless the underlying problem is resolved.

10. Is the P056C code related to other systems in my 2017 Chevrolet Silverado?

Yes, it can be related to the brake or clutch pedal position sensors since these components interact with the cruise control system to cancel its operation.