1993 GMC Suburban Owner's Manual - Page 185
1993 GMC Suburban Manual
Page 185 highlights
K2325 This light appears on your instrument cluster to warn you if yourregular brakingsystemneedssewice.See"BrakeSystemWarningLight"inthe Index. Disc Brake Wear Indicators Disc brake pads havebuilt-inwearindicatorsthatmakeahigh-pitched warningsoundwhenthebrake pads arewornandnewpadsareneeded. go orbeheardallthetimeyourvehicleismoving Thesoundmaycomeand (exceptwhen you arepushingonthebrakepedalfirmly). The brake wear warning sound means that sooner or later your your brakes won't workwell,Thatcouldlead to anaccident.Whenyou hearthebrakewearwarningsound,haveyourvehicleserviced. Continuing to drive with worn-out brake pads couki result in costly brake mpair. I Somedrivingconditionsorclimates maycause abrakesqueal whenthe brakes are first applied or lightly applied. This does not mean something is wrongwithyourbrakes. 4-1 7