P101C 2014 GMC Sierra Code - Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage
Quick Answer
The Glow Plug Control Module (GPCM) has the ability to perform internal diagnostics for the temperature sensor circuit. Common causes include Faulty Glow Plug Control Module (GPCM), Glow Plug Control Module harness is open or shorted, Glow Plug Control Module 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
- P101C 2014 GMC Sierra indicates Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage.
- Common causes
- Common causes include Faulty Glow Plug Control Module (GPCM), Glow Plug Control Module harness is open or shorted, Glow Plug Control Module 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 P101C 2014 GMC Sierra Description
What are the Possible Causes of the DTC P101C 2014 GMC Sierra?
- Faulty Glow Plug Control Module (GPCM)
- Glow Plug Control Module harness is open or shorted
- Glow Plug Control Module circuit poor electrical connection
How to Fix the DTC P101C 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 P101C 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 P101C 2014 GMC Sierra Code
1. What does the OBDII code P101C mean on a 2014 GMC Sierra?
P101C indicates a "Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage" issue, meaning the voltage in the circuit is higher than expected.
2. What are the symptoms of code P101C in a 2014 GMC Sierra?
Common symptoms include difficulty starting the engine, reduced engine performance, and an illuminated check engine light.
3. What causes the P101C code to appear?
This code can be triggered by a faulty temperature sensor, damaged wiring, loose connections, or a malfunctioning glow plug control module.
4. Can driving with code P101C damage my 2014 GMC Sierra?
While it may not immediately damage the vehicle, prolonged driving with this issue can lead to harder starting in cold weather and potential damage to the glow plug system.
5. How do I fix the P101C code on my GMC Sierra?
Repairs may include replacing the faulty temperature sensor, inspecting and repairing damaged wiring, or replacing the glow plug control module if necessary.
6. How do I diagnose the P101C code?
Diagnosis involves using a scan tool to confirm the code, visually inspecting the wiring for damage, testing the temperature sensor, and checking the voltage at the glow plug control module.
7. How much does it cost to repair the P101C code?
Repair costs vary but typically range from $100 to $300 for parts and labor, depending on whether the temperature sensor or control module needs replacement.
8. Can a faulty glow plug cause the P101C code?
No, a faulty glow plug itself typically won’t cause this code. It specifically relates to the temperature sensor circuit in the glow plug control system.
9. Is the P101C code specific to diesel engines?
Yes, this code is specific to diesel engines, as they use glow plugs and a control module to aid in starting and operation.
10. Can I reset the P101C code without fixing the problem?
You can clear the code with a scan tool, but it will likely return if the underlying issue isn’t resolved.
Discuss the causes and fixes for P101C 2014 GMC Sierra OBDII Code
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