1998 GMC Sonoma Owner's Manual - Page 237

Position thechisel end of your wheel wrench, or the optional hub cap removal tool, in thenotch of the hub cap and pry off the hub cap. Some of the molded plastic hub caps haveimitation wheel nuts molded into them. The wheel wrench won't fit these imitation nuts, so don't try to remove them with the socket endof the wheel wrench. If you have individual wheel nut caps that cover each nut, they must be removed in order to get tothe wheel nuts. Use the socketend of the wheel wrench to remove the wheel nut caps. Your wheel nut caps may attach your hub cap to the wheel. Remove these wheel nut caps before you take off the hub cap. 5-25