1999 GMC Sierra 1500 Pickup Owner's Manual - Page 326

Service & Appearance Care Windshield Washer Fluid To Add: Openthecaplabeled bottle is full. WASHER FLUID ONLY. Addwasher fluiduntilthe K2469 - Whenusingaconcentratedwasherfluid,followthemanufacturer instructions for adding water. Don't water ready-to-use mix with washer Water use fluid. can the solution to freeze and damage your washer fluid tank and other parts of the washer system. Also, water doesn't clean as well as was fluid. Fill yourwasherfluidtankonly 3/4 full whenit'sverycold.This allows for expansion,which could damagethetank if it is CnrnDletely full. I I 1 I I . Don'tuseradiatorantifreezeforyourwindshieldwasher. damage washer your system and paint. It can 6-48