P155B 2014 GMC Sierra 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 2014 GMC Sierra 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 2014 GMC Sierra Description
What are the Possible Causes of the DTC P155B 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 P155B 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 P155B 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 P155B 2014 GMC Sierra Code
1. What does the OBDII code P155B mean on a 2014 GMC Sierra?
P155B indicates an issue with the Cruise Control Set/Coast Switch 2 Circuit, which is part of the cruise control system responsible for maintaining or reducing vehicle speed.
2. What are the common symptoms of code P155B in a 2014 GMC Sierra?
The most common symptoms include cruise control not engaging or functioning properly, the cruise control light not illuminating, and potentially an illuminated check engine light.
3. What causes the P155B code to appear in a 2014 GMC Sierra?
Possible causes include a faulty cruise control switch, damaged wiring or connectors in the Set/Coast circuit, or an issue with the body control module (BCM).
4. How can I diagnose the P155B code on my GMC Sierra?
Start by using an OBDII scanner to confirm the code. Then inspect the cruise control switch, wiring, and connectors for damage or corrosion. Test the switch's functionality using a multimeter if necessary.
5. Can a faulty cruise control switch cause the P155B code?
Yes, a malfunctioning cruise control switch is a common cause of this code, as it may fail to send proper signals to the vehicle’s control module.
6. Is it safe to drive my 2014 GMC Sierra with the P155B code?
Yes, it is generally safe to drive, but the cruise control system may not function until the issue is resolved. Address the problem promptly to restore full functionality.
7. How much does it cost to fix the P155B code on a GMC Sierra?
Repair costs can vary, but replacing a cruise control switch typically costs between $100 and $300, including parts and labor. Wiring repairs may be less expensive.
8. Can I fix the P155B code on my GMC Sierra myself?
If you’re comfortable with basic automotive repairs, you can inspect and replace the cruise control switch or repair damaged wiring yourself. Otherwise, consult a professional mechanic.
9. Will resetting the ECU clear the P155B code permanently?
Resetting the ECU may temporarily clear the code, but if the underlying issue persists, the code will return. Proper diagnosis and repair are necessary to resolve the problem.
10. How can I prevent the P155B code from recurring on my GMC Sierra?
Regularly inspect and maintain the cruise control system, including the switch and wiring. Address any signs of wear, corrosion, or damage promptly.
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