1999 GMC Sierra 1500 Pickup Owner's Manual - Page 144

Features & Contmls Instrument CIuster Your instrumentcluster is designedtoletyouknowataglancehowyour vehicleisrunning.You'llknowhowfastyou'regoing,abouthowmuchfuel youhaveandmanyotherthingsyou'llneedtoknowtodrivesafelyand economically. Tachometer Cluster If youhavethetachometercluster,itlooksdifferentbutwilltellyou of displayingyour everythingthestandardclusterdoes,withtheaddition enginesrevolutionsperminute(rpm). Speedometer and Odometer K2322 Your speedometerletsyouseeyourspeedinbothmilesperhour(mph)and kilometersperhour(kmlh). Yourodometershowshowfaryourvehiclehas beendriven,ineithermiles(used in the U.S.)orkilometers(usedin Canada). If youhavetheSportPerformanceModel(RPOB4U),yourspeedometer reading will go to 110 mph (180 km/h). Tamper-Resistant Odometer Your odometeristamper-resistant.Theodometerwillshowsilverlines betweenthenumbers if someonetriestoturn it back. Youmaywonderwhathappens if yourvehicleneedsanewodometer to themileagetotal of theoldodometer, installed. If thenewonecanbeset then it mustbe.But if itcan't,thenit'ssetatzero,andalabelmustbeput 2-76