P155B GMC Code - Cruise Control Set/Coast 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
- P155B GMC indicates Cruise Control Set/Coast 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.
Code P155B GMC Description
What are the Possible Causes of the DTC P155B GMC?
- 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 P155B GMC?
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 P155B GMC 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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Information for Specific GMC Models
- P155B 2014 GMC Sierra — Cruise Control Set/Coast Switch 2 Circuit
- P155B 2015 GMC Sierra — Cruise Control Set/Coast Switch 2 Circuit
- P155B 2016 GMC Sierra — Cruise Control Set/Coast Switch 2 Circuit
- P155B 2017 GMC Sierra — Cruise Control Set/Coast Switch 2 Circuit
- P155B 2018 GMC Sierra — Cruise Control Set/Coast Switch 2 Circuit
Frequently Asked Questions about P155B GMC Code
1. What are the common symptoms of OBDII code P155B GMC?
The common symptoms of code P155B GMC include inoperative cruise control, illuminated Check Engine Light, and possible issues with the vehicle's coast switch.
2. What is the likely cause of OBDII code P155B GMC?
The most common cause of code P155B GMC is a malfunction in the cruise control set/coast switch 2 circuit, which may be due to a faulty switch or wiring issue.
3. How can I diagnose the issue related to OBDII code P155B GMC?
To diagnose code P155B GMC, start by checking the cruise control system components, such as the switches, wiring, and connections. Using a diagnostic scanner can help pinpoint the exact location of the fault.
4. Can I still drive my vehicle with OBDII code P155B GMC?
While it may be safe to drive your vehicle with code P155B GMC, it is recommended to address the issue promptly to avoid potential long-term damage to the cruise control system.
5. How can I repair OBDII code P155B GMC?
Repairing code P155B GMC involves identifying the faulty component in the cruise control set/coast switch 2 circuit and repairing or replacing it as needed. This may involve fixing wiring issues, replacing the switch, or addressing any other underlying problems.
6. Is it possible to reset OBDII code P155B GMC without repairs?
Resetting the code without addressing the underlying issue may temporarily turn off the Check Engine Light, but the problem will likely reoccur. It is best to diagnose and repair the root cause of the code to prevent further issues.
7. Can a DIY enthusiast fix OBDII code P155B GMC?
Depending on your level of automotive knowledge and experience, a DIY enthusiast may be able to diagnose and repair code P155B GMC. However, if you are unsure about the repair process, it is recommended to seek professional help to avoid further complications.
8. How do I prevent OBDII code P155B GMC from appearing again?
To prevent code P155B GMC from reoccurring, perform regular maintenance checks on your vehicle's cruise control system, including inspecting switches, connections, and wiring for any signs of wear or damage.
9. Does OBDII code P155B GMC affect the overall performance of the vehicle?
While code P155B GMC is primarily related to the cruise control system, addressing the issue promptly can help maintain the overall performance and functionality of your vehicle by ensuring all systems are in proper working condition.
10. What should I do if OBDII code P155B GMC persists after repairs?
If code P155B GMC persists after repairs, recheck the components of the cruise control system for any overlooked issues. It may also be helpful to consult with a professional mechanic for further diagnosis and assistance.
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