2011 Chevrolet Suburban 1500 Owner's Manual - Page 459

Vehicle Care 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 10‑84 for more information. 10-75 4. Insert the open end of the extension (J) through the hole in the rear bumper (I) (hoist shaft access hole). Be sure the hoist end (J) of the extension (D) connects to the hoist shaft (B). The ribbed square end of the extension is used to lower the spare tire. 5. Turn the wheel wrench (E) counterclockwise to lower the spare tire (H) to the ground. Continue to turn the wheel wrench until the spare tire can be pulled out from under the vehicle. 7. Tilt the tire toward the vehicle with some slack in the cable to access the tire/wheel retainer. Separate the retainer from the guide pin by sliding the retainer up the pin while pressing down on the latch. 6. Use the wheel wrench hook that allows you to pull the hoist cable towards you, to assist in reaching the spare tire.