1999 GMC Sonoma Owner's Manual - Page 226

yellowblue Turn the wheel wrench counterclockwise to lower the spare tire. Keep turning the wheel wrench until the spare tire can be pulled out from under the vehicle. When the tire has been completely lowered, tilt the retainer at the end of the cable and pull it through the wheel opening. Pull the tire out from under the vehicle. NOTICE: To help avoid vehicle damage, do not drive the vehicle before the cable is restored. Put the spare tire near the flat tire. The tools you'll be using include the jack (A) and wheel wrench (B). Your vehicle may also have an optional hub cap removal tool. 5-22