To turn on the speed limit feature on your GMC Sierra, you'll primarily use the LIM button on your steering wheel or access the function through your vehicle's infotainment system. This activates the Speed Limit Assist, allowing you to set and maintain a maximum driving speed.
Activating and Managing the Speed Limit on Your GMC Sierra
GMC Sierra vehicles are equipped with a Speed Limit Assist feature designed to help drivers adhere to desired speed limits. This system allows you to set a specific speed, and while it's not a hard limiter like a governor, it provides a control mechanism to help you stay within your chosen speed.
Step-by-Step Guide to Setting Your Speed Limit
Follow these simple steps to activate and customize the speed limit function in your Sierra:
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Access the Speed Limit Assist Menu:
- Locate and press the LIM button on your steering wheel. This button is typically found among the cruise control functionalities.
- Alternatively, you can access the Speed Limit Assist menu through the Controls app on your vehicle's infotainment screen.
- Pressing the LIM button or selecting the option will open the Speed Limit Assist menu in your Driver Information Center (DIC), which is the display located directly behind your steering wheel.
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Confirm the Initial Speed Limit:
- Once the Speed Limit Assist menu is active, your GMC Sierra will usually suggest the current vehicle speed as the initial speed limit.
- To confirm this speed and set it as your active limit, press the SET/- button on your steering wheel.
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Adjust the Speed Limit (Optional):
- After setting the initial limit, you have the flexibility to adjust it up or down.
- To decrease the set speed, press the SET/- button again.
- To increase the set speed, press the RES/+ button on your steering wheel.
- Each press will typically adjust the speed in small increments, allowing for precise control over your desired limit.
Understanding and Utilizing Speed Limit Assist Features
- Visual Confirmation: Always check your Driver Information Center (DIC) for the speed limit icon and the displayed set speed to ensure the system is actively engaged.
- Aid for Compliance: This feature is an excellent tool for adhering to posted speed limits, particularly in zones with varying speed regulations, helping you avoid unintentional speeding.
- Temporary Override: In many GMC Sierra models, the Speed Limit Assist can be temporarily overridden if you need to accelerate beyond the set limit (e.g., for safe passing maneuvers). Consult your owner's manual for specific instructions on how this function operates in your model.
- Deactivating the Feature: To turn off the Speed Limit Assist, simply press the LIM button again, or use the corresponding option within the Controls app on your infotainment system.
For a quick reference, here's a summary of the key control buttons:
| Control Button | Function |
|---|---|
| LIM | Activates/Deactivates Speed Limit Assist; opens menu in DIC. |
| SET/- | Confirms current speed as limit; decreases the set speed. |
| RES/+ | Increases the set speed. |
For more detailed information specific to your GMC Sierra's model year and trim, it is always recommended to consult your official GMC Owner's Manual or visit the GMC Support Page online.
