AutoCodes – Chevrolet – P101C 2016 Chevrolet Silverado

P101C 2016 Chevrolet Silverado 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 2016 Chevrolet Silverado 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.

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Code Popularity 248

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Oct 01, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P101C 2016 Chevrolet Silverado Description

The Glow Plug Control Module (GPCM) has the ability to perform internal diagnostics for the temperature sensor circuit. The GPCM monitors the internal temperature sensor voltage and if the voltage is less than 0.21 V or greater than 4.94 V. The GPCM will send a message to the Engine Control Module (ECM) to set the appropriate Diagnostic Trouble Code (DTC). A DTC is detected when one of the GPCM temperature sensors voltage falls outside the calibrated threshold for greater than 1.3 s.

OBDII Code P101C 2016 Chevrolet Silverado - Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage - AutoCodes.com — P101C 2016 Chevrolet Silverado Code - Glow Plug Control Module Temperature Sensor 2 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P101C 2016 Chevrolet Silverado?

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 2016 Chevrolet Silverado?

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 2016 Chevrolet Silverado 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 P101C 2016 Chevrolet Silverado code?

Need more information on how to fix the P101C 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P101C 2016 Chevrolet Silverado Code

What does the OBDII code P101C mean on a 2016 Chevrolet Silverado?

P101C indicates a high voltage issue in the Glow Plug Control Module Temperature Sensor 2 circuit, which monitors engine temperature for glow plug operation.

What are common symptoms of P101C on a 2016 Chevrolet Silverado?

Symptoms may include difficulty starting in cold weather, reduced engine performance, or an illuminated check engine light.

What causes the P101C code on a 2016 Chevrolet Silverado?

Common causes include a faulty temperature sensor, damaged wiring or connectors, or issues with the glow plug control module.

Can I still drive my 2016 Chevrolet Silverado with the P101C code?

While the truck may still be drivable, ignoring the code can lead to starting issues or further damage to the glow plug system, especially in cold climates.

How do you diagnose the P101C code on a 2016 Chevrolet Silverado?

Diagnosis involves inspecting the temperature sensor, wiring, and connectors for damage, and testing the glow plug control module for proper function.

How do you fix the P101C code on a 2016 Chevrolet Silverado?

Repairs may include replacing the temperature sensor, repairing damaged wiring or connectors, or replacing the glow plug control module.

How much does it cost to fix the P101C code on a 2016 Chevrolet Silverado?

The repair cost depends on the issue but typically ranges from $100 to $300 for parts and labor, depending on whether a sensor or module replacement is needed.

Can a faulty Glow Plug Control Module cause other issues?

Yes, a failing module can result in poor cold engine starts, reduced fuel efficiency, and potential damage to other components in the glow plug system.

How can I prevent the P101C code from appearing on my 2016 Chevrolet Silverado?

Regular maintenance, including inspecting wiring and connectors and promptly addressing any warning signs, can help prevent this issue.

Do I need special tools to fix the P101C code on a 2016 Chevrolet Silverado?

Basic tools like a multimeter and an OBDII scanner are often sufficient for diagnosing and repairing this code, but advanced tools may be needed for module replacement.