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Engine-Codes – GMC – P151E GMC

P151E GMC Code - Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect

Quick Answer

The P151E GMC code indicates that there is an issue with the Active Grille Air Shutter Actuator 1 Signal Message Counter being incorrect. Common causes include Faulty Active Grille Air Shutter Actuator, Wiring issues or electrical connection problems, Software glitches in the vehicle's control module. 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
P151E GMC indicates Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect.
Common causes
Common causes include Faulty Active Grille Air Shutter Actuator, Wiring issues or electrical connection problems, Software glitches in the vehicle's control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code P151E GMC Description

The P151E GMC code indicates that there is an issue with the Active Grille Air Shutter Actuator 1 Signal Message Counter being incorrect. This component is responsible for controlling the airflow through the grille of the vehicle, helping to regulate engine temperature and improve aerodynamics. When this signal message counter is incorrect, it can lead to a variety of performance issues and potentially cause long-term damage if not addressed promptly.

OBDII Code P151E GMC - Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect
P151E GMC Code - Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect

Common Causes of P151E GMC

  1. Faulty Active Grille Air Shutter Actuator
  2. Wiring issues or electrical connection problems
  3. Software glitches in the vehicle's control module
  4. Environmental factors such as debris or moisture affecting the actuator
  5. General wear and tear over time

Symptoms of P151E GMC

  1. Engine overheating
  2. Decreased fuel efficiency
  3. Engine misfires
  4. Illuminated check engine light
  5. Rough idling

How to Fix P151E GMC

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to read the fault codes and pinpoint the problem.
  2. Inspect the Active Grille Air Shutter Actuator and its wiring for any visible damage or loose connections. Replace any damaged components.
  3. Clear the fault codes from the vehicle's system using the diagnostic scanner.
  4. Test the actuator to ensure it is functioning correctly and recalibrate it if necessary.
  5. Reset the vehicle's computer system to ensure the code does not reappear.

Cost to Fix P151E GMC

The typical repair costs for addressing the P151E GMC code can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $200 and $500 for parts and labor. However, it's important to note that rates can vary significantly based on location, vehicle make and model, and the expertise of the auto repair shop. It's recommended to obtain quotes from multiple shops to ensure you receive a fair price for the repair.

What does this mean?

Tech Notes for P151E GMC

The aero shutters on some 2019-2021 Silverado 1500, Tahoe, Suburban, Sierra 1500, Yukon, Escalade; 2020-2021 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD models may have several conditions that could potentially cause improper shutter operation. Several DTCs may be set, depending on the specific conditions. When checking aero shutter operation, be sure to look for electrical integrity issues, displaced louvers/vanes, and debris that may block movement.

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Information for Specific GMC Models

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 P151E GMC Code

1. What are the common symptoms of OBDII code P151E GMC?

- Common symptoms include poor engine performance, decreased fuel efficiency, rough idling, and the vehicle's grille shutters not functioning properly.

2. What does OBDII code P151E GMC mean?

- OBDII code P151E GMC indicates that the signal message counter for the Active Grille Air Shutter Actuator 1 is incorrect.

3. What are the possible causes of OBDII code P151E GMC?

- Possible causes include a faulty grille air shutter actuator, wiring issues, a defective actuator control module, or a communication error within the system.

4. How can I diagnose the cause of OBDII code P151E GMC?

- Diagnosis typically involves inspecting the wiring and connectors related to the grille air shutter actuator, testing the actuator itself, and checking for any communication faults using a diagnostic scan tool.

5. Can I continue driving with OBDII code P151E GMC?

- It is not recommended to continue driving with this code active, as it can lead to further damage and potentially affect the vehicle's performance.

6. How can OBDII code P151E GMC be repaired?

- Repair may involve replacing the faulty grille air shutter actuator, repairing any damaged wiring or connectors, reprogramming the actuator control module, or addressing any communication issues in the system.

7. Are there any DIY tips for fixing OBDII code P151E GMC?

- DIY repair is possible for those with automotive experience. Ensure to follow proper diagnostic procedures, use the correct tools, and refer to the vehicle's service manual for guidance.

8. How much does it cost to repair OBDII code P151E GMC at a mechanic?

- Repair costs can vary depending on the specific issue causing the code, but it may range from $200 to $500 at a mechanic, including parts and labor.

9. Can resetting the OBDII system clear OBDII code P151E GMC?

- Resetting the OBDII system may temporarily clear the code, but it is likely to return if the underlying issue is not addressed and repaired.

10. How can I prevent OBDII code P151E GMC from reoccurring?

- Regular maintenance, timely repairs of related components, and addressing any issues promptly can help prevent OBDII code P151E GMC from reoccurring.

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