2004 Buick Rendezvous Owner's Manual - Page 405
2004 Buick Rendezvous Manual
Page 405 highlights
If the spare tire will not lower, the secondary latch may be engaged causing the tire not to lower. Do the following to check the cable: 1. Check under the vehicle to see if the cable is visible. 2. If it is not visible, see "Secondary Latch System" following. If it is visible, first try to tighten the cable by turning the folding wrench clockwise until you hear two clicks or feel it skip twice. You cannot over-tighten the cable. 3. Then loosen the cable by turning the wrench counterclockwise three or four turns. 4. If the spare tire has not lowered, tighten the cable all the way and then loosen it at least two times. If the spare tire did lower to the ground, continue with Step 5 under "Removing the Spare Tire (Vehicles with the Rear Convenience Center)" earlier in this section. 5. If you still cannot lower the spare tire to the ground, see "Secondary Latch System" following. 5-83