How to Disable OnStar in a Silverado
OnStar is an in-vehicle safety and security system installed in most current GM vehicles. OnStar provides 24-hour access to trained consultants, a connection to emergency assistance and access to OnStar Hands-Free Calling. If you no longer want OnStar in your Silverado, you will need to call GM to cancel the service and remove the OnStar parts from your vehicle's dash. Removing OnStar from a Silverado can be a little tricky because of the center console on the dash.
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Instructions
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Call OnStar Customer Service at 888-466-7827 and cancel your OnStar service. You will need to provide them with your OnStar account number and the make and model of your vehicle. Your OnStar account number can be found at the top of your monthly bill.
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Sit in the driver's seat of your Silverado. Locate the center console along the front dashboard of your truck. The OnStar control module is behind the lower trim panel on the center console, just below the ashtray. There are two screws on the left side of the panel.
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Remove the two screws with a Phillips screwdriver.
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Remove the trim panel by pulling it. The trim panel is held in place by several plastic clips. Make sure you don't damage the clips as you remove the trim panel.
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Cut the thin wires attaching the OnStar module to the other components with a pair of scissors. The OnStar module is inside the panel. It a small metal module and is the only piece inside the panel held in place with plastic brackets. Make sure to only cut the wires attached to the OnStar module. Remove the module.
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Place the trim panel back in its plastic brackets and put the screws back in their original positions, tightening them with a Phillips screwdriver.
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Tips & Warnings
When you remove the screws from the trim panel, be sure to keep them in a safe place for reattachment later.
Be careful when cutting the wires to the OnStar control module. A wrong cut could leave you with a very expensive problem.
