See also:

Rear Compartment Fuse Block (CTS Coupe and Sedan)
The rear compartment fuse block is located on top of the battery, on the right side of the trunk. The battery access door must be removed to access the fuse block. The vehicle may not be equi ...

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 ...

Exterior Lamp Controls
The exterior lamp control is located on the instrument panel to the left of the steering column. It controls the following systems: - Headlamps - Taillamps - Parking Lamps - License Plat ...