Owner Checks and Services
At Each Fuel Stop
• Check the engine oil level.
See Engine Oil on page 10‑8.
Once a Month
• Check the tire inflation pressures. See Tire Pressure on page 10‑44.
• Inspect the tires for wear.
See Tire Inspection on page 10‑50.
• Check the windshield washer fluid level. See Washer Fluid on page 10‑22.
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 v ...
Four-Wheel Drive
If the vehicle has Four-Wheel Drive, you can send the engine's driving power to all four wheels for extra traction. To get the most satisfaction out of Four-Wheel Drive, you must be familiar with its ...
Hydraulic Power Steering
Your vehicle has hydraulic power steering. It may require maintenance. See Power Steering Fluid Power Steering Fluid on page 10‑27.
If power steering assist is lost because the engine stops or ...