2008 GMC Envoy Owner's Manual - Page 380

4. 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. If the spare tire does not lower to the ground, the secondary latch is engaged causing the tire not to lower. See Secondary Latch System on page 5-92 for more information. 5. Tilt the retainer at the end of the cable when the tire has been completely lowered, and pull it through the wheel opening. 6. Pull the tire out from under the vehicle. Notice: If you drive away before the spare tire or secondary latch system cable has been reinstalled, you could damage your vehicle. Always reinstall this cable before driving your vehicle. 7. Put the spare tire near the flat tire. 5-86