GMC Active Grill Shutter Problems: Quick Troubleshooting Guide

Dealing with GMC active grill shutter problems can be frustrating, but it’s important to understand these issues so you can address them effectively. Active grill shutters play a crucial role in your vehicle’s efficiency by reducing aerodynamic drag and improving fuel economy. General Motors incorporates this technology in various GMC models to enhance their performance.

However, you might encounter certain active grille shutter problems like getting stuck, malfunctioning sensors, or even overheating. Knowing the symptoms of these issues can help you promptly detect and resolve them, keeping your GMC in optimal condition. In the following paragraphs, we’ll discuss some common problems and their possible solutions.

Common GMC Active Grill Shutter Issues

Symptoms of Malfunction

When your GMC vehicle’s active grill shutter is experiencing issues, there are certain symptoms you might notice. Some common symptoms include the check engine light turning on, the grill shutters not opening or closing properly, and poor fuel efficiency. These symptoms can be caused by a variety of factors, such as moisture, snow, dirt, and debris.

It is essential to be aware of these signs and address them as soon as possible to prevent further complications and potential damage to your vehicle. Keeping an eye out for the check engine light and your vehicle’s performance can help you detect any grill shutter malfunctions early on.

Specific Issue Codes

When you identify a grill shutter malfunction, various codes may appear on your vehicle’s diagnostics system. Some common codes associated with active grille shutter problems include P151E, P069E, and P059F. P251E, for instance, indicates that there’s a malfunction with the grille shutter position sensor circuit. Meanwhile, P059F suggests that the desired active grille air shutter position is not equal to the actual position.

It is important to diagnose these codes accurately, as they can guide you in identifying the specific issues and addressing them accordingly. You can do this by using an OBD-II scanner tool or consulting a professional mechanic.

Impact of External Elements

External elements like moisture, snow, and dirt can significantly impact the performance of your active grill shutter system. Moisture intrusion can cause damage to the internal components of the shutter system, such as broken or damaged seals. Meanwhile, snow and ice can cause the shutters to become stuck and lead to a malfunction.

Dirt and debris, on the other hand, can accumulate around the shutter system, causing it to function poorly or become clogged. Regular maintenance and inspection of your active grille shutter system can help minimize the impact of these external elements and keep your vehicle running efficiently.

In conclusion, by being aware of the common issues, symptoms, and environmental factors, you can identify and address any active grill shutter problems in your GMC vehicle, ensuring optimal performance and fuel efficiency.

Problematic GMC Models

Sierra 1500 Issues

The GMC Sierra 1500 has been reported to experience active grille shutter issues. Some owners of the 2018 Sierra have encountered a U1510 code due to a fault in the active grille shutter system. In these cases, water ingress in the connector at the motor was found to be the primary cause. If you’re facing a similar problem, cleaning the connector may help resolve the issue.

Chevy’s Active Grill Shutter Problems

The Chevrolet vehicles that often feature active aero shutters, which can be identified with the RPO code VTI, include models such as Cruze Eco, Volt, Malibu, and Impala. These shutters can suffer from similar issues as the Sierra 1500. One commonly reported problem is the lower grille shutter remaining open and not closing properly. In such situations, replacing the lower grille shutter might help resolve the issue.

Maintaining the smooth operation of active grille shutters in your Chevy and GMC vehicles is essential for optimal aerodynamics and fuel efficiency. If you encounter any issues, it’s important to address them promptly to prevent any long-term impact on performance. Keep a close eye on the shutter system, and consult your local mechanic or dealership for assistance if necessary.

Solutions and Servicing

Grille Shutter Maintenance

Regular maintenance of your GMC’s active grill shutters is essential for optimal performance and to avoid potential issues. Inspect the actuator, plastic components, and seals for signs of wear or damage. Make sure to clean the grille shutter assembly with a soft cloth and mild soap to remove dirt and debris. Lubricate the moving parts with a high-quality, water-resistant lubricant to ensure smooth operation.

Replacing Grill Shutter Assembly

If your grille shutter is malfunctioning or damaged, replacing the shutter assembly might be necessary. To do this, first disconnect the electrical connector for the actuator. Then, remove the mounting screws holding the assembly in place and carefully remove it from your vehicle. When installing a new shutter assembly, make sure it’s a genuine GM part to ensure compatibility and proper functioning. Once the new assembly is in place, reconnect the electrical connector and secure it with the mounting screws. Test the shutters to confirm proper operation. If the issue persists, consult your local GM dealership or a certified technician for further assistance.

Communicating With GMC Customer Service

In case you’re facing persistent issues with your active grill shutters or if you have questions regarding maintenance or replacement, don’t hesitate to reach out to GMC customer service for support. They can provide guidance and help with any concerns you may have about your vehicle’s grille shutter system or your ongoing vehicle payments. Communicating with GMC customer service will help you resolve any issues and ensure the longevity and performance of your active grill shutters.

  • Eric Williams

    I'm the founder of Daily Car Tips. I wrote articles in the automotive industry for more than 10 years, published in USA and Europe. I love sharing my knowledge and insights with fellow enthusiasts. Join me on this journey as we explore the exciting world of cars together!

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