1993 GMC Suburban Owner's Manual - Page 101

... K2240 The turn signal has two upward .(for Right) and two downward (for Left) positions.Thesepositionsallowyou to signalaturnoralanechange. To signal . a turn, move .the lever all thewayupordown.Whentheturn finished,. the lever will return automatically. A greenarrowontheinstrumentpanel orlanechange. will flash in thedirection oftheturn is To signalalanechange,justraiseorlowertheleveruntilthegreenarrow startstoflash.Holditthereuntilyoucompleteyourlanechange.Thelever willreturnbyitselfwhenyoureleaseit. If abulbisburnedout,replace it tohelpavoidanaccident. arrowsdon'tgoonatallwhenyousignalaturn,checkthefuse(see "Fuses"intheIndex)andforburned-outbulbs. If thegreen Operation of Lights Althoughyourvehicle'slightingsystem(headlights,parkinglights,foglamps, sidemarkerlightsandtaillights)meetallapplicablefederallighting requirements,certainstatesandprovincesmayapplytheirownlighting regulationsthatmayrequirespecialattentionbeforeyouoperatetheselights. Forexample,somejurisdictionsmayrequirethatyouoperateyourlower 2-37