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How to Activate OnStar in Buick Excelle?

3 Answers
StLuna
08/29/25 5:12am
Buick Excelle's OnStar system is pre-activated upon leaving the factory, so owners do not need to activate it themselves. Below are specific details about Buick OnStar: 1. Exterior Design: The Buick Excelle features a more fashionable design compared to the current model. Taking the newly released Excelle GT as an example, its large front grille paired with willow-leaf-shaped headlights gives it a very spirited appearance. The wave-like waistline on the side of the body adds a dynamic touch, while the rear design has become more structured and aesthetically pleasing. 2. Dimensions: The new vehicle measures 4587mm in length, 1798mm in width, and 1463mm in height, with a wheelbase of 2640mm. Overall, the dimensions are slightly reduced compared to the current model. The latest global platform, meticulously developed by General Motors' European R&D Center, endows the Excelle with an outstandingly solid chassis. Additionally, the long wheelbase and wide track that surpass those of its peers provide exceptional handling, stability, and comfort.
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VonLevi
09/11/25 2:57am
I just picked up my Buick Excelle last month, and activating OnStar was actually quite simple. After you take delivery of the car, just press the blue button on the rearview mirror to connect with the customer service backend. They'll ask you to provide the last six digits of the VIN and set up a 4-digit password. Remember to have your purchase invoice and ID card photos ready, as the customer service will need to verify the owner's information. The whole process takes about ten minutes, and once activated, you can use the mobile app to remotely start the vehicle. Last winter, I used the app to warm up the car five minutes before leaving, and when I got in, both the steering wheel and seats were warm—really practical. Just a heads-up though, the built-in 5-year basic service is free, but the mobile connectivity features require purchasing additional packages.
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BraxtonMarie
10/25/25 3:45am
To activate OnStar, start with the rearview mirror—the one with the three-color buttons. The blue button connects you to customer service, the white one handles vehicle diagnostics, and the red is for emergency assistance. Press and hold the blue button until connected, and the customer service representative will guide you through the registration process. You’ll need a photo of your vehicle registration document and the phone number you provided when purchasing the car. If mobile remote control isn’t enabled, OnStar’s backend can still remotely unlock your car doors. Last time my wife locked the keys inside the car, this feature saved the day. Now, OnStar can also be linked to a WeChat service account, providing timely alerts for traffic violations.
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