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:
Anti-theft Alarm System Messages
THEFT ATTEMPTED
This message displays if the vehicle detects a tamper condition. ...
Keyless Trunk Opening
Lift up on the touch pad located
above the license plate to open the
trunk if the RKE transmitter is within
range. ...
Engine Compartment Overview
When you open the hood on the 4.2L L6 engine, here is what you will see:
A. Engine Air Cleaner/Filter.
B. Engine Coolant Recovery Tank.
C. Windshield Washer Fluid Reservoir.
D. Power Steering Fl ...