OnStar Vehicle Diagnostics can perform a vehicle check every month. It will check
the engine, transmission, antilock brakes, and other major vehicle systems. It also
checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring
System. If an On-Demand Diagnostics check is needed, press
, and an Advisor can run a check.
Jump Starting
For more information about the vehicle battery, see Battery on page 10-22.
If the battery has run down, try to use another vehicle and some jumper cables
to start your vehicle.
Be sure to use the following steps to do it safely.
Warning
WARNING: Battery posts, terminals, and related accessorie ...
Interior Lighting
Dome Lamps
The dome lamp controls are in the overhead console.
Move the control to change the lamp setting.
OFF: Turns the lamps off, even when a door is open.
DOOR: Turns the lamps on automatically when a door is opened.
ON: Turns on the dome lamps.
For more information about interior lig ...
Driving for Better Fuel Economy
Driving habits can affect fuel mileage. Here are some driving tips to get the
best fuel economy possible.
Avoid fast starts and accelerate smoothly.
Brake gradually and avoid abrupt stops.
Avoid idling the engine for long periods of time.
When road and weather conditions are appropriate, ...