AutoCodes – GMC – P155C 2017 GMC Sierra

P155C 2017 GMC Sierra 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 2017 GMC Sierra 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 154

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 2017 GMC Sierra 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 2017 GMC Sierra - Cruise Control Resume/Acceleration Switch 2 Circuit - AutoCodes.com — P155C 2017 GMC Sierra Code - Cruise Control Resume/Acceleration Switch 2 Circuit

What does this mean?

What are the Possible Causes of the DTC P155C 2017 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 P155C 2017 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 P155C 2017 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.

Need more information about the P155C 2017 GMC Sierra code?

Need more information on how to fix the P155C 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P155C 2017 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code P155C in a 2017 GMC Sierra related to the Cruise Control Resume/Acceleration Switch 2 Circuit?

The common symptoms include the cruise control system not working properly, the inability to resume or accelerate using the cruise control, and a malfunction indicator light (MIL) illuminating on the dashboard.

2. What are the possible causes of OBDII code P155C in a 2017 GMC Sierra?

Possible 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 the Cruise Control Resume/Acceleration Switch 2 Circuit issue in my 2017 GMC Sierra?

Diagnosing this issue typically involves using a scan tool to retrieve the OBDII trouble code, checking the cruise control switch for proper operation, and inspecting the wiring and connectors for any visible damage.

4. Can I still drive my 2017 GMC Sierra with OBDII code P155C present?

While it may be safe to drive the vehicle with this code present, it is recommended to address the issue promptly to ensure the proper functioning of the cruise control system.

5. What are some repair tips for fixing OBDII code P155C in a 2017 GMC Sierra?

Repair tips may include checking and replacing the cruise control resume/acceleration switch if necessary, repairing any damaged wiring or connectors, and clearing the trouble code with a scan tool after the repairs are completed.

6. Is it possible to reset OBDII code P155C in a 2017 GMC Sierra without making any repairs?

While you can clear the code with a scan tool, it is essential to address the underlying issue causing the code to prevent it from reoccurring.

7. Are there any safety concerns associated with OBDII code P155C in a 2017 GMC Sierra?

Since this code relates to the cruise control system, there may be safety implications if the cruise control is not functioning correctly. It is recommended to address the issue promptly to ensure safe driving conditions.

8. How much does it typically cost to repair OBDII code P155C in a 2017 GMC Sierra?

The cost of repairing this code can vary depending on the exact cause of the issue, but it may involve replacement parts, labor costs, and diagnostic fees from a professional mechanic.

9. Can a DIY enthusiast with automotive knowledge fix OBDII code P155C in a 2017 GMC Sierra?

Depending on the individual's skill level and access to tools, a knowledgeable DIY enthusiast may be able to diagnose and repair this code. However, if unsure, it is recommended to seek professional help.

10. Will OBDII code P155C in a 2017 GMC Sierra affect the overall performance of the vehicle?

While the code may not directly impact the vehicle's drivability, it can affect the functionality of the cruise control system, which may be inconvenient for some drivers.