1993 GMC Suburban Owner's Manual - Page 328

Protecthg Exterior Bright Metal Parts Bright metal parts should be cleaned regularly to keeptheirluster.Washing GM Chrome withwater is allthatisusuallyneeded.However,youmayuse if necessary. Polishonchromeorstainlesssteeltrim, Usespecialcarewithaluminumtrim. To avoiddamagingprotectivetrim,never useauto or chromepolish,steam or causticsoap to cleanaluminum. A coating ofwax,rubbed to ahighpolish, is recommendedfor all bright metal parts. Akminum Wheeis (If So Equipped) Youraluminumwheelshave a protective coating similar to the painted surface ofyourvehicle.Don'tusestrongsoaps,chemicals,chromepolish,orother abrasivecleanersonthembecauseyoucoulddamagethiscoating.After rinsingthoroughly,awaxmaybeapplied. If you 9ave aluminum wheels, don't use an automatic vehicle wash that has hard silicon carbde cleaning brushes, These brushes can take off lhe protective coating. White Sidewall Tires YourGeneralMotorsdealerhas use astiffbrushwith it. a GM WhiteSidewallTireCleaner. Youcan Weatherstrips Theseareplaceswhereglassormetalmeetsrubber.Siliconegreasethere willmakethemlastlonger,sealbetter,andnotstickorsqueak.Applysilicone greasewithacleanclothatleastever);sixmonths. Sheet M@tdDamage If yourvehicle is damagedandrequiressheetmetalrepairorreplacement, to theparts makesurethe body repairshopappliesanti-corrosionmaterial repaired or replaced to restorecorrosionprotection. Foreign Material Calciumchlorideandothersalts,icemeltingagents,roadoilandtar,tree sap, birddroppings,chemicalsfromindustrialchimneys,and 0the.rforeign if theyremainonpaintedsurfaces. mattercandamageyourvehicle'sfinish Usecleanersthataremarkedsafe for paintedsurfaces for thesestains. Finish Damage Anystonechips,fracturesordeepscratchesinthefinishshouldberepaired rightaway.Baremetalwillcorrodequicklyandmaydevelopinto a major repair expense. 6-62