1993 GMC Safari Owner's Manual - Page 117

This light will also comeonwhenyousetyourparkingbrake,andwillstay If it stays on after your parking on if yourparkingbrakedoesn'treleasefully. brake is fullyreleased, it meansyouhavea brake problem. If the light comesonwhiledriving, pull off theroadandstopcarefully. You may notice that the pedal is harder to push.Or thepedalmaygocloser to thefloor. It may take longer to stop. If the light is still on, havethevehicle in theIndex). towedforservice.(See"Towingyourvehicle'' CAUTION Your brakesystemmaynotbeworkingproperly if thebrakewarning lightison.Drivingwiththebrakewarninglightoncan lead toan accident. If thelight is still onafteryou've pulled off theroadand stoppedcarefully,havethevehicletowedforservice. Anti-Lock Brake System Warning Light Cluster Standard Digifal Cluster - PO642 Withanti-lock,thislightwillgoonwhenyoustartyourengineand onforaseveralseconds or so. That'snormal. If thelightdoesn'tcomeon,have there is aproblem. if fixed so it willbeready maystay to warnyou if If thelightstayson, orcomesonwhenyou'redriving,yourvehicleneeds service.Unlesstheregularbrakesystemwarninglightisalsoon,youwill If theregularbrakesystemwarning havebrakes,butnotanti-lockbrakes. in thispart. lightisalso on, see"BrakeSystemWarningLight"earlier still 2-59