1993 GMC Suburban Owner's Manual - Page 299

Afterwork is done on thebrakehydraulicsystem,makesurethelevelsare above MIN and belowthetop of eachwindow. What To Add: Whenyou do need brakefluid,useonly DOT-3 brakefluid-suchasDelco Supreme l l @ (GM Part No. 1052535). Usenewbrakefluidfrom a sealed containeronly. e Don't let someone put in the wrong kind of fluid. For example, just B few drops of mineral-based oil, such as engine oil, in your brake system can damage brake system parts So badly !hat they'll have to Hydro-Boosb Brake System (Hydraulic Pump) Thepowersteeringpump is alsousedastheHydro-boostpump.Referto "PowerSteeringSystem" in thissectionwhencheckingfluidleveloraddingfluid. ke system Thebrakingsystemonamodernvehicleiscomplex.Itsmanypartshave to be oftopquality and workwelltogether if thevehicle is to havereallygood braking. Vehicleswe design andtesthavetop-quality GM brakeparts in them,asyourvehicledoeswhen it isnew.Whenyoureplaceparts of your braking system-forexample,whenyourbra.keliningsweardownandyou GM have to havenewones put in-be sureyougetnewgenuine replacementparts. If youdon't,yourbrakesmay no longerworkproperly.For example, if someone puts in brakeliningsthatarewrongforyourvehicle,the balance between your front and rearbrakes can change,fortheworse.The braking performanceyou'vecome to expectcanchange in manyotherways if someoneputs in thewrongreplacementbrakeparts. 6-33