P056C 2016 GMC Sierra 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 2016 GMC Sierra 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.
Code P056C 2016 GMC Sierra Description
What are the Possible Causes of the DTC P056C 2016 GMC Sierra?
- 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 2016 GMC Sierra?
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 2016 GMC Sierra 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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Frequently Asked Questions about P056C 2016 GMC Sierra Code
1. What does the OBDII code P056C mean on a 2016 GMC Sierra?
The P056C code indicates an issue with the Cruise Control Cancel Switch Circuit, which may prevent the cruise control system from functioning properly.
2. What are the common symptoms of code P056C in a 2016 GMC Sierra?
Symptoms may include the cruise control not engaging or disengaging unexpectedly, a check engine light, or reduced functionality of the cruise control system.
3. What causes the P056C code in a 2016 GMC Sierra?
Common causes include a faulty cruise control cancel switch, damaged wiring or connectors in the switch circuit, or an issue with the body control module (BCM).
4. Can I still drive my 2016 GMC Sierra with the P056C code?
Yes, the truck is still drivable, but the cruise control system may not work correctly, which can be inconvenient for long trips.
5. How do I diagnose the P056C code on a 2016 GMC Sierra?
Diagnosis involves checking the cruise control cancel switch for proper operation, inspecting the wiring and connectors for damage, and testing the circuit with a multimeter.
6. How do I fix the P056C code on my 2016 GMC Sierra?
Repairs may include replacing a faulty cruise control cancel switch, repairing damaged wiring or connectors, or reprogramming or replacing the body control module if necessary.
7. Where is the cruise control cancel switch located on a 2016 GMC Sierra?
The cruise control cancel switch is typically integrated into the brake pedal assembly or steering column, depending on the vehicle’s design.
8. How much does it cost to fix code P056C on a 2016 GMC Sierra?
Repair costs can range from $50 to $300, depending on whether the issue is with the switch, wiring, or body control module.
9. Can a bad brake light switch cause the P056C code?
Yes, since the cruise control cancel switch is often part of or linked to the brake light switch, a faulty brake light switch can trigger this code.
10. Do I need to reset the code after fixing the P056C issue on my 2016 GMC Sierra?
Yes, after completing the repairs, you should clear the code using an OBDII scanner to ensure the issue is resolved.
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