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 ...

Sedan and Coupe Model
(Washer Fluid): Press the button with this symbol, on the end of the windshield washer lever to wash the windshield. The washer fluid sprays onto the windshield and the wipers run for a few ...

Engine Compartment Overview
CTS 3.6L V6 Engine Shown, 3.0L V6 Engine Similar A. Windshield Washer Fluid Reservoir. See Washer Fluid. B. Engine Compartment Fuse Block (CTS V Wagon) or Engine Compartment Fuse Block (CT ...