See also:

Owner Checks and Services
At Each Fuel Stop • Check the engine oil level. See Engine Oil on page 10‑7. Once a Month • Check the tire inflation pressures. See Tire Pressure on page 10‑62. • Inspect the tir ...

Starter Switch Check
WARNING When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured. 1. Before starting this check, be sure there is enough room around ...

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 ...