MORE CONVENIENCE WITH YOUR GMC

Get ready to take your ride to the next level with OnStar Connected Services. The 2025 Sierra HD now comes standard with the amazing in-vehicle connected technology of a 3-Year OnStar Connect Plan§

Activate your GMC upon purchase to enjoy all the convenience, control and entertainment a connected§ vehicle offers.
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CONNECTED CONVENIENCE FOR 3 YEARS

Get ready to revolutionize your driving experience! With just a tap of your finger, you can keep your car in tip-top shape and control it from afar with ease.
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MYGMC APP
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VEHICLE STATUS 
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DESTINATION DOWNLOAD
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VEHICLE LOCATE
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SAFETY & SECURITY ADD-ON

With a team of specially trained Advisors§ and 25 years of know-how, our safety and security services have got your back 24/7
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AUTOMATIC CRASH RESPONSE
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ROADSIDE ASSISTANCE
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EMERGENCY SERVICES

TECHNOLOGY NEVER STOPS WITH ONSTAR

Explore OnStar services that are required to suit your everyday needs.
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STANDARD CONNECTIVITY

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By activating OnStar, you also get up to 10 years of Standard Connectivity§ that will allow you to enjoy benefits like Monthly Health Checks, Diagnostic Alerts§, Over-the-air software update features.
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ENTERTAINMENT

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Bring your favorite online world of entertainment with you wherever you go thanks to our super strong 4G LTE Wi-Fi§ that delivers dependable internet, connecting up to 7 devices.
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STANDARD CONNECTIVITY

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By activating OnStar, you also get up to 10 years of Standard Connectivity§ that will allow you to enjoy benefits like Monthly Health Checks, Diagnostic Alerts§, Over-the-air software update features.

ALL THE BENEFITS AT YOUR FINGERTIPS

Get your dream Sierra HD and experience it in a whole new way in just a few clicks – what are you waiting for?
EXPLORE MORE BENEFITS
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