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:
Battery Replacement
To change the batteries:
1. Loosen the screw to the battery door located on the left side of the
headphones.
2. Slide the battery door open.
3. Replace the two AAA batteries.
4. Replace the bat ...
Starting the Vehicle
1. Aim the Remote Keyless Entry
(RKE) transmitter at the vehicle.
2. Press and release .
3. Immediately after completing
Step 2, press and hold for at
least four seconds or until the
vehicl ...
Cellular Phone Usage
Cellular phone usage may cause
interference with the vehicle's radio.
This interference may occur when
making or receiving phone calls,
charging the phone's battery,
or simply having the phon ...