377 . . .––––Section 4Spare Tire (If equipped)If your vehicle has a spare tire andjacking equipment, see "Changinga Flat Tire" in Section 5 for infor-mation on spare tire removal andchanging a flat tire.If your vehicle has neither a sparetire, nor jacking equipment, yourvehicle is equipped with a tiresealant and compressor kit.See "Tire Sealant and CompressorKit" in Section 5 for moreinformation.■ WHEELSWheel Alignment and TireBalancingIf there is unusual tire wear or if thevehicle pulls one way or the other,the alignment may need to bereset.If the vehicle vibrates when youare driving on a smooth road, thewheels may need to be balanced.If your vehicle is a CTS-V model,only use adhesive wheel weightsto balance the wheels.See your dealer or a qualifiedtechnician for service.Wheel ReplacementReplace any wheel that is bent,cracked, or badly rusted orcorroded. If wheel nuts keepcoming loose, the wheel, wheelnuts and wheel bolts should bereplaced.While some aluminum wheels canbe repaired, other types of wheelsshould be replaced if they leak air.Use only new, GM originalequipment. See your dealer forassistance.Using a wheel size other than thesize originally installed on yourvehicle may cause problems ordamage to various vehiclesystems, such as braking, ride andhandling, and resistance to roll-over, and to electronic systems likeantilock brakes, traction controland stability control.$10araCTS Page 377 Tuesday, September 15, 2009 12:30 PM