Buick 2006 Rendezvous Owner's Manual page 402

6. Turn the wrench clockwise to raise the cable back
up after removing the spare tire.
Do not store a full-size or a flat road tire under the
vehicle. See Storing a Flat or Spare Tire and
Tools on page 5-84.
To continue changing the flat tire, see Removing the
Flat Tire and Installing the Spare Tire on page 5-77.
If the spare tire will not lower, the secondary latch may
be engaged causing the tire not to lower.
5-76
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
on page 5-81.
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. 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)"
listed previously.
5. If you still cannot lower the spare tire to the ground,
see Secondary Latch System on page 5-81.