Black plate (33,1)Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-6014443) - 2014 - CRC - 4/3/13Driving and Operating 9-33Drive SystemsAll-Wheel DriveVehicles with this feature alwayssend engine power to all fourwheels. It is fully automatic, andadjusts itself as needed for roadconditions.When using a compact spare tire onan AWD vehicle, the systemautomatically detects the compactspare and disables AWD. To restoreAWD operation and preventexcessive wear on the system,replace the compact spare with afull-size tire as soon as possible.See Compact Spare Tire onpage 10-104.BrakesAntilock BrakeSystem (ABS)This vehicle has ABS, an advancedelectronic braking system that helpsprevent a braking skid.When the vehicle begins to driveaway, ABS checks itself.A momentary motor or clicking noisemight be heard while this test isgoing on, and it might even benoticed that the brake pedal movesa little. This is normal.If there is a problem with ABS, thiswarning light stays on. See AntilockBrake System (ABS) Warning Lighton page 5-23.If driving safely on a wet road and itbecomes necessary to slam on thebrakes and continue braking toavoid a sudden obstacle, acomputer senses that the wheelsare slowing down. If one of thewheels is about to stop rolling, thecomputer will separately work thebrakes at each wheel.ABS can change the brake pressureto each wheel, as required, fasterthan any driver could. This can helpyou steer around the obstacle whilebraking hard.As the brakes are applied, thecomputer keeps receiving updateson wheel speed and controlsbraking pressure accordingly.