P155C 2018 GMC Sierra Code - Cruise Control Resume/Acceleration Switch 2 Circuit
Quick Answer
The P155C diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the Cruise Control Resume/Acceleration Switch 2 Circuit. Common causes include Faulty cruise control resume/acceleration switch, Wiring or electrical connection issues, Defective cruise control module. 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
- P155C 2018 GMC Sierra indicates Cruise Control Resume/Acceleration Switch 2 Circuit.
- Common causes
- Common causes include Faulty cruise control resume/acceleration switch, Wiring or electrical connection issues, Defective cruise control module.
- 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 P155C 2018 GMC Sierra Description
The P155C diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the Cruise Control Resume/Acceleration Switch 2 Circuit. This code indicates a problem with the circuit that controls the cruise control system's ability to resume or accelerate the vehicle's speed. The cruise control system allows the driver to set a desired speed, resume that speed after braking, and accelerate or decelerate without using the gas pedal. When this circuit malfunctions, it can lead to issues with the cruise control system's functionality.
Common Causes of P155C 2018 GMC Sierra
- Faulty cruise control resume/acceleration switch
- Wiring or electrical connection issues
- Defective cruise control module
- Corrosion or damage to the cruise control circuit
- Issues with the vehicle's computer system
Symptoms of P155C 2018 GMC Sierra
- Inoperative cruise control system
- Cruise control system unable to resume or accelerate speed
- Illumination of the check engine light
- Decreased fuel efficiency
- Difficulty maintaining a consistent speed on the highway
How to Fix P155C 2018 GMC Sierra
- Begin by diagnosing the specific cause of the P155C code using a diagnostic scanner to pinpoint the issue within the cruise control system.
- Inspect the cruise control resume/acceleration switch and associated wiring for any signs of damage or corrosion. Replace any faulty components.
- Test the cruise control module to ensure it is functioning correctly. Replace if necessary.
- Check the cruise control circuit for any breaks or shorts that may be causing the issue. Repair or replace damaged sections.
- Clear the DTC from the vehicle's computer system and test the cruise control system to ensure proper functionality.
Cost to Fix P155C 2018 GMC Sierra
The cost of repairing the Cruise Control Resume/Acceleration Switch 2 Circuit issue can vary depending on the specific cause of the problem and the labor rates in your area. Generally, you can expect to pay between $150 and $400 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's advisable to obtain quotes from multiple shops to ensure you're getting a fair price.
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Frequently Asked Questions about P155C 2018 GMC Sierra Code
1. What are the common symptoms of OBDII code P155C in a 2018 GMC Sierra related to the Cruise Control Resume/Acceleration Switch 2 Circuit?
The common symptoms include malfunctioning cruise control system, inability to resume or accelerate using the cruise control, and the illumination of the check engine light.
2. What are the possible causes of OBDII code P155C in a 2018 GMC Sierra?
The potential causes of this code may include a faulty cruise control resume/acceleration switch, damaged wiring or connectors in the cruise control system, or a malfunctioning cruise control module.
3. How can I diagnose OBDII code P155C in a 2018 GMC Sierra related to the Cruise Control Resume/Acceleration Switch 2 Circuit?
Diagnosis involves using an OBDII scanner to retrieve the trouble codes, inspecting the cruise control switches and wiring for any visible damage, and testing the cruise control system components for proper functionality.
4. Is it safe to continue driving with OBDII code P155C in a 2018 GMC Sierra?
It is generally safe to drive with this code, but it is recommended to address the issue promptly to restore the cruise control functionality and prevent any potential long-term damage to the vehicle's systems.
5. How can I repair OBDII code P155C in a 2018 GMC Sierra associated with the Cruise Control Resume/Acceleration Switch 2 Circuit?
Repair options may include replacing the faulty cruise control switch, repairing or replacing damaged wiring or connectors, or recalibrating the cruise control module to resolve the issue.
6. Can a DIY enthusiast fix OBDII code P155C in a 2018 GMC Sierra, or is professional assistance necessary?
Depending on the individual's mechanical skills and access to tools, a DIY enthusiast may be able to address this code by following the manufacturer's repair manual and proper diagnostic procedures. However, professional assistance is recommended if unsure.
7. Are there any temporary solutions to consider for OBDII code P155C in a 2018 GMC Sierra until a permanent repair can be made?
One temporary solution could be manually controlling the vehicle's speed without using the cruise control function until the issue is resolved to avoid potential safety hazards or further damage.
8. How much does it typically cost to repair OBDII code P155C in a 2018 GMC Sierra related to the Cruise Control Resume/Acceleration Switch 2 Circuit?
The cost of repair can vary depending on the specific cause of the issue, the required parts, and labor rates. It is advisable to obtain quotes from different mechanics or dealerships for an accurate estimate.
9. Can OBDII code P155C in a 2018 GMC Sierra cause other problems if left unaddressed?
Leaving this code unaddressed can lead to continued malfunctioning of the cruise control system, potential decreased fuel efficiency, and may trigger other related trouble codes if the underlying issue worsens over time.
10. How long does it typically take to repair OBDII code P155C in a 2018 GMC Sierra related to the Cruise Control Resume/Acceleration Switch 2 Circuit?
The repair time can vary based on the complexity of the issue, availability of parts, and the mechanic's expertise. In some cases, it may take a few hours to a full day to diagnose and repair the problem effectively.
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