AutoCodes – Chevrolet – P101D 2016 Chevrolet Silverado

P101D 2016 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 2016 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 280

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 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 P101D 2016 Chevrolet Silverado - Glow Plug Control Module Temperature Sensor 3 Circuit Low Voltage - AutoCodes.com — P101D 2016 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 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 P101D 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 P101D 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 P101D 2016 Chevrolet Silverado code?

Need more information on how to fix the P101D 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 P101D 2016 Chevrolet Silverado Code

What does the OBDII code P101D mean on a 2016 Chevrolet Silverado?

The code P101D indicates a low voltage issue in the Glow Plug Control Module Temperature Sensor 3 Circuit, which helps monitor engine temperature for glow plug operation.

What are the symptoms of code P101D on a 2016 Chevrolet Silverado?

Common symptoms include difficulty starting the engine, reduced engine performance in cold weather, and an illuminated check engine light.

What causes the P101D code on a 2016 Chevrolet Silverado?

Potential causes include a faulty temperature sensor, damaged wiring or connectors, a malfunctioning Glow Plug Control Module, or a poor electrical connection.

How do I diagnose the P101D code on my 2016 Chevrolet Silverado?

Start by inspecting the wiring and connectors for damage, test the temperature sensor for proper operation, and check the Glow Plug Control Module for faults.

Can I drive with the P101D code on my 2016 Chevrolet Silverado?

Driving is possible, but it may lead to starting difficulties or reduced performance, especially in cold weather. Prompt diagnosis and repair are recommended.

How do I fix the P101D code on a 2016 Chevrolet Silverado?

Repairs may involve replacing the temperature sensor, repairing damaged wiring or connectors, or replacing the Glow Plug Control Module if necessary.

How much does it cost to repair code P101D on a 2016 Chevrolet Silverado?

Costs vary depending on the issue, but replacing the temperature sensor typically ranges from $100 to $300, including parts and labor.

Can a low battery cause the P101D code on a 2016 Chevrolet Silverado?

Yes, a weak or failing battery can result in insufficient voltage to the Glow Plug Control Module, potentially triggering the P101D code.

Is a software update required to fix the P101D code on my 2016 Chevrolet Silverado?

In some cases, a software update to the engine control module (ECM) or Glow Plug Control Module may resolve voltage-related issues. Consult a dealership or qualified technician.

How can I prevent the P101D code from recurring on my 2016 Chevrolet Silverado?

Regularly inspect and maintain the glow plug system, including sensors, wiring, and connectors, and ensure your battery and charging system are in good condition.