2004 GMC Sierra 1500 Pickup Owner's Manual - Page 513

To release the spare tire from the secondary latch do the following: 4. Repeat this procedure at least two times. If the spare tire lowers to the ground, continue with Step 5 of "Removing the Spare Tire and Tools" earlier in this section. 5. Turn the wrench counterclockwise until approximately six inches (15 cm) of cable is exposed. 6. Stand the wheel blocks on their shortest ends, with the backs facing each other. 1. Check under the vehicle to see if the cable end is visible. 2. If the cable is not visible proceed to Step 6. If it is visible, first try to tighten the cable by turning the wheel wrench clockwise until you hear two clicks or feel it skip twice. You cannot overtighten the cable. 3. Loosen the cable by turning the wrench counterclockwise three or four turns. 7. Place the bottom edge of the jack on the wheel blocks, separating them so that the jack is balanced securely. 5-113