1996 GMC Sonoma Owner's Manual - Page 211

If your jack storage coveris equipped with a hub cap removal tool, position the hub cap removal tool in the notch and pull straight away from the wheel to avoid potential damage to the hub cap and wheel paint or surface. Remove the hub cap. If you have an aluminum or plastic molded hub cap, pry it off with the chisel end of your wheel wrench. Use the socket end of the wheel wrench to remove the wheel nut caps. Some of the molded plastic hub caps have imitation wheel nuts molded into them. Don't try to remove them. The wheel wrench socket won't fit these imitation nuts. 5-25