Warranty
OnStar equipment may be warranted as part of the new-vehicle limited warranty. The manufacturer of the vehicle furnishes detailed warranty information.
See also:
What to Use
Read the manufacturer's instructions before refilling the windshield washer fluid.
If operating the vehicle in an area where the temperature may fall below freezing,
use a fluid that has suffi ...
Engine Overheating
If the vehicle has the Duramax® Diesel engine, see the Duramax Diesel Supplement for more information.
The vehicle has several indicators to warn of engine overheating.
There is a coolant temperatu ...
Owner Checks and Services
At Each Fuel Stop
○ Check the engine oil level. See Engine Oil on page 10‑10.
Once a Month
○ Check the tire inflation pressures. See Tire Pressure on page 10‑51.
○ In ...