P056C 2017 GMC Sierra Code - Cruise Control Cancel Switch Circuit
Quick Answer
The diagnostic trouble code P056C for a 2017 GMC Sierra relates to the Cruise Control Cancel Switch Circuit. Common causes include Faulty cruise control cancel switch, Damaged wiring or connectors in the cancel switch circuit, Corrosion or poor connections in the circuit. 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 GMC Sierra indicates Cruise Control Cancel Switch Circuit.
- Common causes
- Common causes include Faulty cruise control cancel switch, Damaged wiring or connectors in the cancel switch circuit, Corrosion or poor connections in the circuit.
- 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 P056C 2017 GMC Sierra Description
The diagnostic trouble code P056C for a 2017 GMC Sierra relates to the Cruise Control Cancel Switch Circuit. This code indicates that there is a malfunction in the circuit that controls the cruise control cancel switch. The cruise control cancel switch is a vital component that allows the driver to deactivate the cruise control system quickly. When this circuit malfunctions, it can lead to issues with the cruise control system's functionality.
Common Causes of P056C 2017 GMC Sierra
- Faulty cruise control cancel switch.
- Damaged wiring or connectors in the cancel switch circuit.
- Corrosion or poor connections in the circuit.
- Defective cruise control module.
- Issues with the vehicle's electronic control unit (ECU).
Symptoms of P056C 2017 GMC Sierra
- Inability to deactivate the cruise control system using the cancel switch.
- Check engine light illuminated on the dashboard.
- Unintended acceleration or deceleration when cruise control is engaged.
- Erratic behavior of the cruise control system.
- Loss of cruise control functionality.
How to Fix P056C 2017 GMC Sierra
- Begin by conducting a thorough inspection of the cruise control cancel switch and its wiring.
- Test the cancel switch for proper functionality using a multimeter.
- Check the connections and wiring in the circuit for any signs of damage or corrosion.
- If necessary, replace the cruise control cancel switch or repair any damaged wiring.
- Clear the diagnostic trouble code from the vehicle's ECU and test the cruise control system for proper operation.
Cost to Fix P056C 2017 GMC Sierra
The typical repair costs for addressing the Cruise Control Cancel Switch Circuit issue can vary depending on the specific cause of the problem. In general, replacing the cruise control cancel switch or repairing the wiring may cost between $100 to $300, including parts and labor. However, the final cost can be influenced by factors such as the location of the repair, the make and model of the vehicle, and the rates charged by the auto repair shop. It is advisable to consult with a professional mechanic to obtain a more accurate estimate based on the specific circumstances. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150.
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Frequently Asked Questions about P056C 2017 GMC Sierra Code
1. What does the OBDII code P056C mean on a 2017 GMC Sierra?
P056C indicates a problem with the Cruise Control Cancel Switch Circuit, which monitors the switch that deactivates cruise control when needed.
2. What are the symptoms of the P056C code on a 2017 GMC Sierra?
Common symptoms include the cruise control not functioning, the cruise control cancel feature not working, or the check engine light turning on.
3. What causes the P056C code on a 2017 GMC Sierra?
Potential causes include a faulty cruise control cancel switch, damaged wiring or connectors in the circuit, or a malfunctioning body control module (BCM).
4. Can I still drive my 2017 GMC Sierra with the P056C code?
Yes, but the cruise control system may not function properly, and ignoring the issue could lead to further electrical problems.
5. How do I diagnose the P056C code on a 2017 GMC Sierra?
Diagnosis involves checking for loose or damaged wiring, testing the cruise control cancel switch for proper operation, and using a scan tool to monitor circuit performance.
6. How do you fix the P056C code on a 2017 GMC Sierra?
Repairs may include replacing the cruise control cancel switch, repairing damaged wiring or connectors, or reprogramming the BCM if necessary.
7. How much does it cost to fix the P056C code on a 2017 GMC Sierra?
Repair costs vary but can range from $100 to $300, depending on whether just the switch or additional components need to be replaced.
8. Can a bad cruise control cancel switch trigger the P056C code?
Yes, a faulty or stuck cruise control cancel switch is a common cause of this code.
9. Will clearing the P056C code fix the problem on my 2017 GMC Sierra?
Clearing the code without addressing the underlying issue is only a temporary solution, and the code will likely return.
10. Is the P056C code common on the 2017 GMC Sierra?
While not extremely common, it can occur due to wear and tear on the cruise control system components or wiring issues.
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