AutoCodes – Chevrolet – P155C 2018 Chevrolet Silverado

P155C 2018 Chevrolet Silverado Code - Cruise Control Resume/Acceleration Switch 2 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: P155C 2018 Chevrolet Silverado indicates Cruise Control Resume/Acceleration Switch 2 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 236

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 P155C 2018 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.

OBDII Code P155C 2018 Chevrolet Silverado - Cruise Control Resume/Acceleration Switch 2 Circuit - AutoCodes.com — P155C 2018 Chevrolet Silverado Code - Cruise Control Resume/Acceleration Switch 2 Circuit

What does this mean?

What are the Possible Causes of the DTC P155C 2018 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 P155C 2018 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 P155C 2018 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 P155C 2018 Chevrolet Silverado code?

Need more information on how to fix the P155C 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P155C 2018 Chevrolet Silverado Code

What does the OBDII code P155C mean on a 2018 Chevrolet Silverado?

The P155C code indicates a problem with the Cruise Control Resume/Acceleration Switch 2 Circuit, typically related to the cruise control system's electrical components.

What are the common symptoms of code P155C in a 2018 Chevrolet Silverado?

Symptoms may include the cruise control failing to engage or resume, an illuminated check engine light, and potential loss of certain cruise control functions.

What causes the P155C code to trigger?

Common causes include a faulty cruise control switch, wiring or connector issues in the switch circuit, or a malfunctioning clock spring in the steering wheel.

Can I still drive my 2018 Chevrolet Silverado with the P155C code active?

Yes, you can still drive the vehicle, but cruise control functionality may be compromised. Itâ€™s recommended to address the issue to restore full functionality.

How do I diagnose the P155C code on a Chevrolet Silverado?

Start by checking for loose or damaged wiring in the cruise control circuit, inspect the switch for proper operation, and use a diagnostic scan tool to confirm the circuit's performance.

What tools are needed to repair the P155C code?

You may need a multimeter to test the circuit, a scan tool for diagnostics, and basic hand tools to access and potentially replace the cruise control switch.

Is the P155C code likely to clear itself?

No, the code will not clear itself. The underlying issue must be repaired, and the code may need to be cleared with a scan tool after the repair.

How much does it cost to fix the P155C code on a 2018 Chevrolet Silverado?

Repair costs vary but may range from $50 to $200, depending on whether the issue is wiring-related or requires a new cruise control switch.

Could a faulty clock spring cause the P155C code?

Yes, a defective clock spring in the steering wheel can disrupt cruise control switch signals and potentially trigger this code.

Can a dead battery trigger the P155C code?

A dead or low battery is unlikely to cause this code directly, but electrical issues following a battery replacement might affect the cruise control circuit.