AutoCodes – GMC – P103D 2017 GMC Sierra

P103D 2017 GMC Sierra Code - Engine Coolant Pump Control Signal Message Counter Incorrect

Quick Answer

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Engine Coolant Pump Control Module, Engine Coolant Pump Control Module harness is open or shorted, Engine Coolant Pump 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: P103D 2017 GMC Sierra indicates Engine Coolant Pump Control Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Engine Coolant Pump Control Module, Engine Coolant Pump Control Module harness is open or shorted, Engine Coolant Pump 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 128

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 19, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P103D 2017 GMC Sierra Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Engine Coolant Pump Control Signal Message Counter is Incorrect.

OBDII Code P103D 2017 GMC Sierra - Engine Coolant Pump Control Signal Message Counter Incorrect - AutoCodes.com — P103D 2017 GMC Sierra Code - Engine Coolant Pump Control Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P103D 2017 GMC Sierra?

Faulty Engine Coolant Pump Control Module
Engine Coolant Pump Control Module harness is open or shorted
Engine Coolant Pump Control Module circuit poor electrical connection

How to Fix the DTC P103D 2017 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 P103D 2017 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.

Need more information about the P103D 2017 GMC Sierra code?

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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 P103D 2017 GMC Sierra Code

1. What does the OBDII code P103D mean in a 2017 GMC Sierra?

P103D refers to an issue with the engine coolant pump control signal, specifically when the message counter is incorrect or not as expected by the vehicle's control module.

2. What are the common symptoms of code P103D in a 2017 GMC Sierra?

Symptoms may include an illuminated check engine light, engine overheating, decreased fuel efficiency, or erratic coolant pump operation.

3. What causes the P103D code to appear on a 2017 GMC Sierra?

Common causes include a malfunctioning engine coolant pump, damaged electrical wiring or connectors, a software glitch in the control module, or a failure in the pump control circuitry.

4. Can I continue driving my 2017 GMC Sierra with code P103D active?

It is not recommended to drive the vehicle for extended periods, as an improperly functioning coolant pump could lead to engine overheating and potentially severe engine damage.

5. How is code P103D diagnosed in a 2017 GMC Sierra?

A technician will use an OBDII scanner to confirm the code, inspect the coolant pump wiring and connectors, test the functionality of the pump, and check for any software updates.

6. How do I fix the P103D code on a 2017 GMC Sierra?

Potential fixes include repairing or replacing damaged wiring, replacing the engine coolant pump, reprogramming the control module, or updating the vehicle's software if a known issue exists.

7. How much does it cost to repair code P103D on a 2017 GMC Sierra?

Repair costs can vary but typically range from $200 to $800, depending on whether the issue involves wiring repairs, pump replacement, or software updates.

8. Is the P103D code related to a failing water pump?

Yes, a failing or malfunctioning electronic coolant pump can trigger this code due to improper control signal communication with the engine control module.

9. Can a software update fix the P103D code in a 2017 GMC Sierra?

In some cases, a software update for the engine control module may resolve the issue if the problem stems from a programming glitch.

10. What tools are needed to troubleshoot the P103D code on a 2017 GMC Sierra?

Tools typically include an OBDII scanner, a multimeter for testing electrical components, and potentially specialized diagnostic software for module reprogramming.