AutoCodes – Chevrolet – P101D 2017 Chevrolet Silverado

P101D 2017 Chevrolet Silverado Code - Glow Plug Control Module Temperature Sensor 3 Circuit Low 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: P101D 2017 Chevrolet Silverado indicates Glow Plug Control Module Temperature Sensor 3 Circuit Low 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 228

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 P101D 2017 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 P101D 2017 Chevrolet Silverado - Glow Plug Control Module Temperature Sensor 3 Circuit Low Voltage - AutoCodes.com — P101D 2017 Chevrolet Silverado Code - Glow Plug Control Module Temperature Sensor 3 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P101D 2017 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 P101D 2017 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 P101D 2017 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 P101D 2017 Chevrolet Silverado code?

Need more information on how to fix the P101D 2017 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 P101D 2017 Chevrolet Silverado Code

What does the OBDII code P101D mean for a 2017 Chevrolet Silverado?

P101D indicates an issue with the Glow Plug Control Module Temperature Sensor 3 Circuit experiencing low voltage.

What are common symptoms of code P101D in a 2017 Chevrolet Silverado?

Symptoms may include the check engine light, difficulty starting in cold weather, reduced engine performance, or irregular glow plug operation.

What causes the P101D code to appear on a 2017 Chevrolet Silverado?

Causes can include a faulty temperature sensor, damaged wiring, poor electrical connections, or a malfunctioning glow plug control module.

How can I diagnose code P101D on my 2017 Chevrolet Silverado?

Use an OBDII scanner to confirm the code, inspect the wiring and connectors for damage or corrosion, and test the temperature sensor for proper functionality.

Can I drive my 2017 Chevrolet Silverado with the P101D code active?

Driving may be possible, but performance issues and starting difficulties in cold weather could occur, so timely repairs are recommended.

How do I fix code P101D in a 2017 Chevrolet Silverado?

Repairs may involve replacing the temperature sensor, repairing damaged wiring, cleaning electrical connections, or replacing the glow plug control module.

What tools are needed to address the P101D code on a 2017 Chevrolet Silverado?

Youâ€™ll need an OBDII scanner, a multimeter for testing electrical components, and basic hand tools for repairs.

Will clearing the P101D code solve the problem permanently?

Clearing the code may temporarily turn off the check engine light, but the underlying issue must be repaired to prevent the code from returning.

What is the cost to repair the P101D code on a 2017 Chevrolet Silverado?

Repair costs depend on the issue but typically range from $100 to $500 for parts and labor, depending on whether a sensor or module replacement is needed.

Is the P101D code related to cold weather performance issues?

Yes, since the glow plug system assists in cold starts, issues with the temperature sensor can negatively impact starting in cold conditions.