1993 GMC Suburban Owner's Manual - Page 68
1993 GMC Suburban Manual
Page 68 highlights
m, ...,. . ... . -. . . . ... K5316 Thedoorkeysareforthedoorsandallotherlocks. I K1298 Whenanewvehicle is delivered,thedealerremovestheplugsfromthe keys,andgivesthem to thefirstowner. Eachplughasacodeonitthattellsyourdealeroraqualifiedlocksmithhow tomakeextrakeys.Keeptheplugs in a safe place. If youloseyourkeys, you'll beabletohavenewonesmadeeasilyusingtheseplugs. 2-4
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