See also:

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 vehic ...

When to Check and Change Lubricant
It is not necessary to regularly check front axle fluid unless a leak is suspected, or an unusual noise is heard. A fluid loss could indicate a problem. Have it inspected and repaired. ...

Low Fuel Warning Light
This light, under the fuel gauge, comes on briefly while the engine is being started. This light and a chime, if the vehicle is equipped with a radio, comes on when the fuel tank is low on fuel. T ...