P155A 2016 GMC Sierra Code - Cruise Control Switch State Undetermined
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
- P155A 2016 GMC Sierra indicates Cruise Control Switch State Undetermined.
- 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 P155A 2016 GMC Sierra Description
What are the Possible Causes of the DTC P155A 2016 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 P155A 2016 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 P155A 2016 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 P155A 2016 GMC Sierra Code
1. What does OBDII code P155A mean on a 2016 GMC Sierra?
P155A indicates that the vehicle's engine control module (ECM) has detected an issue with the cruise control switch where its state cannot be determined.
2. What are the common symptoms of code P155A on a GMC Sierra?
The most common symptoms include the cruise control not functioning, the cruise control light not turning on, or intermittent operation of the system.
3. What causes the P155A code on a 2016 GMC Sierra?
The code is often caused by a faulty cruise control switch, damaged wiring or connectors, or a malfunction in the ECM.
4. Can I still drive my GMC Sierra with a P155A code?
Yes, you can still drive the vehicle, but the cruise control system may not function properly until the issue is resolved.
5. How can I fix the P155A code on my 2016 GMC Sierra?
Inspect and replace the cruise control switch if necessary, check for damaged or loose wiring, and clear the code with an OBDII scanner after repairs.
6. How is the P155A code diagnosed?
A mechanic will use an OBDII scanner to confirm the code, inspect the cruise control switch, and test the wiring and connections for continuity or damage.
7. Does the cruise control switch state undetermined issue affect other vehicle functions?
Typically, this issue only affects the cruise control system and should not impact other vehicle functions.
8. How much does it cost to fix the P155A code on a GMC Sierra?
Repair costs depend on the root cause. Replacing a cruise control switch can cost $50–$150 for parts, plus labor, while wiring repairs may vary.
9. Can I reset the P155A code without repairing the issue?
You can clear the code temporarily with an OBDII scanner, but it will likely return if the underlying problem is not fixed.
10. Is the P155A code a common issue on the 2016 GMC Sierra?
While not extremely common, issues with the cruise control switch can occur due to wear and tear or wiring problems.
Discuss the causes and fixes for P155A 2016 GMC Sierra OBDII Code
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