1999 GMC Sierra 1500 Pickup Owner's Manual - Page 329

Other Maintenance Items Front Suspension and Steering Linkage Your maintenanceschedulewill tell youhowoftentolubricatethefittings.See "RecommendedFluidsandLubricants'' in theIndexfortheproperlubricantto use. Front Wheel Bearings Your vehiclehasfrontwheelbearingsthatmustbecleanedandrepacked. Your maintenanceschedulewill tell youhow often this mustbedone. Front Shock Absorbers The front shock absorbers ofyourvehicledomanythings.Theyhelpthe of thesuspensionsystem. vehicleridesmoothlyandalsocontrolthetravel When theshockabsorbersareserviced,anyreplacementshockabsorbers mustbethesameastheoriginalequipmentshockabsorbers in both extendedlengthandstrength. 1 NOTICE If you use shock absomers that are nor mesameas the original shock I absorbers,theshockabsorbersorsuspensionsystemcouldbedamaged. Wheel Nut Torque Forvehicleswithdualwheels,whenthevehicle,wheelorfastenersarenew, 100, 1,000 and 6,000 miles (160, 1600 and havethetorquesetatthefirst 9600 km).UsethetorquespecifiedintheappropriateSpecificationChartlater inthissection. Single Belt Accessory Drive Ifyournewvehicleuses a serpentinebelt,itislighter,andmoredurable thansystemswithseveralbelts. Thebeltrunsover oraroundthepulleys on theengine. A tensioner is used to keepthebelttightat all times.Thetensioneralsomakesreplacingthe belteasier. If youneedtoreplacethebelt,besuretogetthecorrect replacementbelt. Your dealership or partssuppliercanhelpyouwiththis. TheAccessoryDriveBeltRoutinglabelonyourvehiclewillshowyouhow to route the belt your vehicle uses. 6-5 1