1999 GMC Sierra 1500 Pickup Owner's Manual - Page 402

Scheduled Maintenance Sewices When thewheelsareremovedforrotation,inspectdiscbrakepadsforwear Also inspectdrumbrakeliningsforwearand androtorsforsurfacecondition. cracks.Inspectotherbrakeparts,includingdrums,wheelcylinders,parking or dirtfromthewheeland brake,etc.,atthesametime.Removeanyrust mountingsurfacesbeforemountingthewheel. Inspectbrakesmoreoften frequentbraking. if drivinghabits orconditions resull In Owner Checks and Services Listed below are owner checks and services which should be made at the timeperiodspecified to helpensurepropersafety,emissionperformance,and dependability of your vehicle. Besureanynecessaryrepairsarecompletedatonce.Wheneveranyfluids or lubricants are added to yourvehicle,makesuretheyaretheproperones, asshown in thisSection. At Least Once a Month Tireinflation pressure check -Check thetiresforproperinflation.Ifthey oron the arelow, inflate them to thelevelspecifiedonthecertificationlabel tire inflationcharts. See"LoadingYourVehicle''or "Inflation-TirePressure" in the Index. At Least Once a Year Keylockcylinderlubrication -Lubricatekeylockcylinderswithengineoil. See the "Recommended Fluid andLubricants''chart in thissection. Transmissionneutral or clutchstartswitchoperation CAUTION ~ 1. Beforeyoustart,besureyouhaveenoughroomaroundthevehicle. 2. Firmlyapplyboth the manualparkingbrakeandtheregularbrake.See Do notusetheaccelerator "Brakes"and"ParkingBrake"intheIndex. pedal. in eachgear. 3. Beready to turn off theengineimmediately if itstarts. 4. Onautomatictransmissionvehicles, try to starttheengine Thestartershouldworkonly in P (Park)or N (Neutral). 7-22