P155A 2014 GMC Sierra Code - Cruise Control Switch State Undetermined
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
- P155A 2014 GMC Sierra indicates Cruise Control Switch State Undetermined.
- 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 P155A 2014 GMC Sierra Description
What are the Possible Causes of the DTC P155A 2014 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 P155A 2014 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 P155A 2014 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 P155A 2014 GMC Sierra Code
1. What does the OBDII code P155A mean on a 2014 GMC Sierra?
P155A indicates that the Engine Control Module (ECM) has detected an issue where the cruise control switch state cannot be determined, potentially due to a fault in the switch or its circuit.
2. What are the symptoms of code P155A on a 2014 GMC Sierra?
Common symptoms include the cruise control not functioning, the cruise control light not illuminating, and a stored or active P155A code.
3. What causes the P155A code to appear on a 2014 GMC Sierra?
Possible causes include a faulty cruise control switch, damaged wiring or connectors in the cruise control circuit, or a malfunction in the ECM.
4. Can I still drive my GMC Sierra with a P155A code?
Yes, the vehicle can still be driven, but the cruise control system may not work properly. It is recommended to address the issue to restore cruise control functionality.
5. How do I diagnose the P155A code on a 2014 GMC Sierra?
Diagnosis involves checking the cruise control switch for proper operation, inspecting the wiring and connectors for damage or corrosion, and testing the circuit for continuity.
6. Can a blown fuse cause the P155A code?
A blown fuse in the cruise control circuit could potentially cause the code, so inspecting the fuses is a good first step during troubleshooting.
7. How is the P155A code typically fixed on a 2014 GMC Sierra?
Repairs may include replacing the cruise control switch, repairing damaged wiring or connectors, or updating or reprogramming the ECM if necessary.
8. Is the P155A code specific to the cruise control system?
Yes, this code is directly related to the cruise control system and indicates an issue with detecting the state of the cruise control switch.
9. Will clearing the P155A code fix the problem?
Clearing the code may temporarily turn off the check engine light, but the underlying issue must be resolved to prevent the code from returning.
10. Can a faulty ECM cause the P155A code on a 2014 GMC Sierra?
While rare, a malfunctioning ECM can potentially cause this code if it fails to properly interpret signals from the cruise control switch.
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