AutoCodes – GMC – P151D 2016 GMC Sierra

P151D 2016 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 2016 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 157

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 2016 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 2016 GMC Sierra - Transmission Control Module Engine Shutdown Request Signal Message Counter Incorrect - AutoCodes.com — P151D 2016 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 2016 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 2016 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 2016 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 2016 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 2016 GMC Sierra Code

1. What does the OBDII code P151D mean on a 2016 GMC Sierra?

P151D indicates an issue with the Transmission Control Module (TCM) detecting an incorrect message counter for the Engine Shutdown Request Signal.

2. What are common symptoms of the P151D code in a 2016 GMC Sierra?

Symptoms may include the check engine light turning on, difficulty starting the vehicle, or the engine shutting down unexpectedly.

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

Common causes include a faulty Transmission Control Module (TCM), poor electrical connections in the TCM circuit, or issues with the Engine Control Module (ECM) communication.

4. Can a loose or damaged wiring harness cause the P151D code?

Yes, damaged wiring or poor electrical connections between the TCM and ECM can lead to communication errors triggering the P151D code.

5. How do you diagnose the P151D code on a 2016 GMC Sierra?

Diagnosis involves scanning for additional codes, inspecting wiring and connectors, and testing the communication signals between the TCM and ECM.

6. Can I drive my 2016 GMC Sierra with the P151D code active?

Driving with the P151D code is not recommended, as it may lead to unexpected engine shutdowns or further damage to the transmission or engine systems.

7. How can the P151D code be fixed?

Repairs may include fixing or replacing damaged wiring, reprogramming or replacing the TCM, and ensuring proper communication between the TCM and ECM.

8. Is reprogramming the TCM necessary to fix the P151D code?

In some cases, reprogramming the TCM with updated software may resolve the P151D code if no hardware faults are present.

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

Repair costs vary based on the issue, but replacing or reprogramming the TCM typically costs between $300 and $1,000, including labor.

10. Can a weak battery cause the P151D code to trigger?

Yes, a weak or failing battery can cause voltage irregularities, which may disrupt communication between the TCM and ECM, potentially triggering the P151D code.