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Where is The Onstar Module Located?

Published by Dustin Babich on

The OnStar system has become a staple in many vehicles, offering drivers a suite of safety, security, and convenience features, from automatic crash response and emergency services to navigation and stolen vehicle assistance. Central to the operation of the OnStar system is its module, a crucial component that connects the vehicle to OnStar services. In this guide, we’ll explore the typical locations of the OnStar module in vehicles and underscore its significance.

Short Answer: The OnStar module, also known as the telematics control unit, is typically located in the dashboard or console area, behind the vehicle’s infotainment center, or under the passenger seat or rear deck in some models. The exact location can vary by the make, model, and year of the vehicle, so referring to the owner’s manual or contacting a dealer is recommended for specific information.


OnStar’s integration into vehicles has revolutionized how we interact with our cars, providing a level of connectivity and safety previously unattainable. The heart of this system is the OnStar module, which houses the technology needed to connect the vehicle with OnStar’s network, enabling communication and data exchange. Understanding the location and function of this module is essential for troubleshooting, upgrading, or accessing OnStar services.

Key Takeaways:

  • The OnStar module is crucial for accessing OnStar services in vehicles.
  • Its location varies significantly across different vehicle makes and models.
  • Familiarity with the module’s location is beneficial for troubleshooting and service access.
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Common Locations of the OnStar Module

One of the most common locations for the OnStar module is behind the vehicle’s dashboard, often situated near or integrated with the infotainment center. This placement allows for easy connectivity to the vehicle’s audio and communication systems.

Under Seats

In some vehicles, the OnStar module can be found under the front passenger seat or occasionally under the driver’s seat. This location protects the module while providing accessible cabling routes for connection to the vehicle’s electrical and data systems.

In the Trunk or Rear Deck Area

Some manufacturers place the OnStar module in the trunk or rear deck area of the vehicle. This might be more common in larger vehicles or those where space behind the dashboard is limited.

The Importance of the OnStar Module

The OnStar module is not just a piece of hardware; it’s the gateway to a wide range of services that enhance the driving experience, from safety and security features to navigation and remote vehicle access. Keeping this module functioning and understanding its location for potential upgrades or troubleshooting is vital for maintaining access to these services.


The OnStar module is a pivotal component in vehicles equipped with OnStar services, acting as the bridge between the vehicle and OnStar’s network. Knowing its location is essential for troubleshooting, service access, or enhancements. For specific information about your vehicle’s OnStar module location, consult your owner’s manual or contact a professional.

Frequently Asked Questions

Q: Can the OnStar module location vary within the same brand?

A: Yes, the module’s location can differ not only across different brands but also among models and production years within the same brand.

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Q: Is it safe to tamper with or remove the OnStar module?

A: Tampering with or removing the OnStar module is not recommended as it can disable OnStar services and may affect other vehicle functionalities.

Q: Can I upgrade my OnStar module for newer services?

A: In some cases, OnStar modules can be upgraded or replaced to access newer services. It’s best to consult with a dealer or OnStar directly for options.

Q: What should I do if my OnStar isn’t working?

A: If OnStar services aren’t functioning, check your subscription status first. If your subscription is active, the issue could be with the module or vehicle connectivity, requiring professional diagnostics.

Q: Can the OnStar module affect my vehicle’s battery life?

A: The OnStar module, like other electronic devices in your vehicle, draws a minimal amount of power. However, it shouldn’t significantly affect battery life under normal conditions.

Q: How do I know if my vehicle is equipped with OnStar?

A: Vehicles equipped with OnStar usually have an OnStar button on the rearview mirror, dashboard, or infotainment screen. The vehicle’s owner’s manual should also provide information about the OnStar system and its features.

Dustin Babich

Dustin Babich

Dustin Babich

As the passionate author behind, Dustin Babich is a knowledgeable expert in all things automotive. With a deep understanding of car tools, equipment, engines, and troubleshooting techniques, Dustin Babich shares invaluable insights, practical tips, and effective solutions to empower readers in overcoming car-related challenges.

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