Reactivation for Subsequent Owners
Push 
and follow the prompts to speak to an Advisor as soon as possible after acquiring the vehicle.
The Advisor will update vehicle records and will explain the OnStar service offers and options available.
See also:
Starter Switch Check
WARNING
When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.
1. Before starting this check, be sure there is enough room around ...
Muting a Call
During a call, all sounds from inside the vehicle can be muted so that the person
on the other end of the call cannot hear them.
To mute a call, press , and then
say “Mute Call.”
To cancel m ...
Using the Tire Sealant and Compressor Kit without Sealant to Inflate a Tire (Not Punctured)
To use the air compressor to inflate a tire with air only and not sealant:
If a tire goes flat, avoid further tire and wheel damage by driving slowly to a level place. Turn on the hazard warning fl ...