See also:

Four-Wheel Drive
Transfer Case When to Check Lubricant Refer to Maintenance Schedule on page 11‑3 to determine when to check the lubricant. How to Check Lubricant Electric Shift Transfer Case A. Fill Plug ...

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 ...

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 ...