2003 GMC Sierra 1500 Pickup Owner's Manual - Page 461

The equipment you'll need is behind the passenger's seat. For Extended and Crew Cab@models, the equipment is under the passenger's side second row seat. 1. If there is a cover, move the seats forward and turn the wing nut on the cover counterclockwise to remove it. For Crew Cab@ models, pull up the second row seat with the loop at the base of the seat cushion to access the tools. 2. The wheel blocks and the wheel block retainer can be removed by turning the wing nut counterclockwise. You'll use the jack handle and the wheel wrenchto remove the underbody-mounted spare tire. 3. To release the bottle jack from its holder, turn the knob on the bottle jack counterclockwise to lower the jack head. 4. There is also a wing nut used to retain the storage bag and tools. To remove it, turn the wing nut counterclockwise. A. Hoist Assembly B. Wheel Wrench C. Extensions D. Hoist Shaft E.ValveStem, Pointed Down f. Spare Tire 5-86 G. Tire Retainer H. Hoist Cable I. Hoist Lock (If Equipped) J. Hoist Shaft Access Hole K. Hoist End