1999 GMC Sierra 1500 Pickup Owner's Manual - Page 146

Features & Controls Tachometer If youhaveatachometer,itdisplaystheenginespeedinrevolutionsper minute(rpm). If youhavetheSportPerformanceModel(RPO readingwillgo to 6,000 RPM. B4U), yourtachometer Do notoperatetheenginewiththetachometer magec' could parts other be engine or 'II in theredarea,your in 1 I Damage to yourengineorvehiclecausedbyoperatingtheengine red area isn't covered by your vehiclewarranty. Warning and lndicator Lights This section describes the warning lights and gages that are on your vehicle. Thepictures will helpyoulocatethem. it Warninglightsandgagescansignalthatsomethingiswrongbefore becomesseriousenough to causeexpensiverepair or replacement.Paying or othersfrom attention to yourwarninglightsandgagescouldalsosaveyou injury. is aproblemwithone ofyour Warninglightsgoonwhentheremaybeor few pages, vehicle'sfunctions. As youwillsee in thedetailsonthenext to let somewarninglightscomeonbrieflywhenyouturntheignitionkeyjust 2-78