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:
What to Use
WARNING
Adding only plain water or some other liquid to the cooling system can be dangerous.
Plain water and other liquids, can boil before the proper coolant mixture will.
The coolant warni ...
Manual Liftgate
For vehicles without keyless access, unlock the vehicle before opening the
liftgate.
Press the touch pad located in the handle of the liftgate, above the license
plate, and lift up to open.
Do ...
License Plate Lamp
To replace one of these bulbs:
1. Open the liftgate. See Liftgate for more information.
Passenger Side Shown, Driver Side
Similar
2. Push the left end of the lamp assembly towards the ri ...