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Under the radio.
Behind the glovebox.
Under the right side dash.
Under the panel on the dash that has the red flashing LED and the auto headlight sensor - you will need to remove the trim on the side of the windshield to remove the panel. The onstar box is silver with Motorola words in my vehicle.
Assuming you don't mean the actual buttons, but the control module itself. That would be located in the dash on the drivers side above the steering wheel assembly.
call the security for your car and request that they unlock your car. OnStar provides this if your car is equipped with OnStar.
The OnStar Corporation provides a 24 hour service. The OnStar button is located inside your car and will connect you to someone who can help you with directions or in emergencies. Originally OnStar was only available for GM vehicles, but can now be put into any brand of car.
The Vehicle interface unit VIU and the Vehicle control unit VCU and the receiver is located behind the glove box in the passenger footwell. the onstar button is located int he overhead console. the modules are vin specific so they cant be swapped out without GM. you can remove them I have a 02 and since its no longer supported by onstar i yanked out the VIU and VCU and the cell phone receiver. then took the GPS transponder off the front driver side of the windshield and the rear attenna off the back glass and got an overhead console minus onstar and put it up. They unplug and cause no problems The fuse is fuse 32. The actual guts of the Onstar system is in the frontmost overhead compartment that is between the driver and passenger seats. However, if the option wasn't purchased you'll just have an extra slot for sunglasses.
its right behind the glove box, remove the glovebox ,then unplug all three electical plugs and the antenna that will disable the unit. next time you take it in for service they might reconect it.
Either on the rear view mirror, on right by the radio
OnStar was created in 1995.
Sorry, OnStar can be activated with a Verizon phone. The OnStar phone can be added to a family plan as a family phone.