Diagnostics

OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the veh ...

OnStar Additional Information

Transferring Service Push to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle owne ...

See also:

MOExtended tires (tires with run-flatproperties)
MOExtended tires (tires with run-flat properties) allow you to continue driving your vehicle even if one or more tires are entirely deflated. MOExtended tires may only be used in conjunction wi ...

To erase all programing
For first time programing, ensure that the engine is switched off: 1. Ensure that the ignition is on (but with the engine switched off). 2. Press and hold the two outer buttons on the transceiver in ...

Opening and closing windows with the mechanical key
The driver’s door key operation also allows you to open and close all door windows. To open the windows, turn the driver’s door key cylinder to the rear of the vehicle for longer than 1 se ...