See also:

When to Change Engine Oil
This vehicle has a computer system that indicates when to change the engine oil and filter. This is based on a combination of factors which include engine revolutions, engine temperature, and mile ...

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 ...

Radio(s)
VOL/ : Press to turn the system on and off. Turn to increase or decrease the volume. RADIO/BAND or SOURCE: Press to choose between FM, AM, or XM™, if equipped. Menu Knob: Turn to select r ...