AutoCodes – GMC – P151D 2017 GMC Sierra

P151D 2017 GMC Sierra Code - Transmission Control Module Engine Shutdown Request 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 Transmission Control Module, Transmission Control Module harness is open or shorted, Transmission 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: P151D 2017 GMC Sierra indicates Transmission Control Module Engine Shutdown Request Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Transmission Control Module, Transmission Control Module harness is open or shorted, Transmission 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 235

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 Sep 28, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P151D 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 Transmission Control Module Engine Shutdown Request Signal Message Counter is Incorrect.

OBDII Code P151D 2017 GMC Sierra - Transmission Control Module Engine Shutdown Request Signal Message Counter Incorrect - AutoCodes.com — P151D 2017 GMC Sierra Code - Transmission Control Module Engine Shutdown Request Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P151D 2017 GMC Sierra?

Faulty Transmission Control Module
Transmission Control Module harness is open or shorted
Transmission Control Module circuit poor electrical connection

How to Fix the DTC P151D 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 P151D 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 P151D 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 P151D 2017 GMC Sierra Code

1. What does the OBDII code P151D mean on a 2017 GMC Sierra?

P151D indicates that the Transmission Control Module (TCM) has detected an issue with the Engine Shutdown Request Signal Message Counter, specifically that it is incorrect or inconsistent.

2. What are the common symptoms of code P151D on a GMC Sierra?

Symptoms may include the Check Engine Light turning on, erratic transmission behavior, reduced engine performance, or the engine shutting down unexpectedly.

3. What causes the P151D code to appear on a 2017 GMC Sierra?

Common causes include a faulty Transmission Control Module (TCM), wiring or connector issues, software glitches in the TCM or ECM, or a failure in communication between the TCM and ECM.

4. Can a bad TCM cause the P151D code?

Yes, a malfunctioning TCM can cause the P151D code by failing to send or interpret the Engine Shutdown Request Signal Message Counter correctly.

5. How do you diagnose the P151D code on a GMC Sierra?

Diagnosis involves using a scan tool to check for related codes, inspecting the TCM and ECM wiring and connectors, updating module software if necessary, and performing communication tests between the TCM and ECM.

6. Can driving with the P151D code damage my 2017 GMC Sierra?

Driving with this code may lead to erratic engine or transmission behavior, which could potentially cause further mechanical issues or safety concerns.

7. How is the P151D code fixed on a GMC Sierra?

Repairs may involve reprogramming or replacing the TCM, repairing damaged wiring or connectors, or addressing any software communication errors between the TCM and ECM.

8. Is the P151D code related to transmission problems?

While the code originates from the TCM, it is more about communication between the TCM and ECM rather than a direct mechanical transmission issue.

9. How much does it cost to fix the P151D code on a 2017 GMC Sierra?

Repair costs vary but may range from $150 to $1,000 depending on whether the issue requires simple wiring repair, module reprogramming, or TCM replacement.

10. Can I clear the P151D code without repairs?

Clearing the code without addressing the root cause may temporarily turn off the Check Engine Light, but the issue will likely return until properly resolved.