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 vehicle is equipped with the Tire Pressure Monitoring System.
If a diagnostics check is needed between e-mails, push 
, and an Advisor can run a check.
See also:
If the On Indicator is Lit for a Child Restraint
If a child restraint has been installed and the on indicator is lit:
1. Turn the vehicle off.
2. Remove the child restraint from the vehicle.
3. Remove any additional items from the seat such as bl ...
Climate Control System (With Heater Only)
Climate Control System (With Heater Only)
A. Fan Control
B. Temperature Control
C. Air Delivery Mode Control
See Climate Control Systems (with Air Conditioning) on page 8‑1 or Climate Co ...
Exterior Mirrors
Exterior Mirrors
Vehicles with outside power mirrors and foldaway mirrors have controls located on the driver door.
1. Press (A) or (B) to select the driver or passenger side mirror.
2. Press t ...