Checking Coolant
The vehicle must be on a level surface when checking the coolant level.
Check to see if coolant is visible in the coolant surge tank. If the coolant inside the coolant surge tank is boiling, do not do anything else until it cools down. If coolant is visible but the coolant level is not at the indicated mark, add a 50/50 mixture of clean, drinkable water and DEX-COOL coolant at the coolant surge tank, but be sure the cooling system is cool before this is done.
The coolant surge tank is located in the engine compartment on the driver side of the vehicle. See Engine Compartment Overview for more information on location.
See also:
How OnStar Service Works
Push this blue button to connect to a specially trained OnStar Advisor to verify your account information and to answer questions.
Push this red emergency button to get priority help from specially ...
Checking Engine Oil
It is a good idea to check the engine oil level at each fuel fill. In order to get an accurate reading, the oil must be warm and the vehicle must be on level ground. The engine oil dipstick handle is ...
Engine Compartment Overview
A. Engine Air Cleaner/Filter .
B. Electric Engine Cooling Fan (Out of View). See Cooling System .
C. Engine Oil Dipstick. See “Checking Engine Oil” under Engine Oil .
D. Engine Oil Fill Cap. ...