2010 GMC Acadia Owner's Manual - Page 385

Vehicle Care 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" later in this section. To continue changing the flat tire, see "Removing the Flat Tire and Installing the Spare Tire" later in this section. 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 10‑76. If it is visible, first try to tighten the cable by turning the lug 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. 10-69 5. If you still cannot lower the spare tire to the ground, see Secondary Latch System on page 10‑76. Removing the Flat Tire and Installing the Spare Tire 1. Do a safety check before proceeding. See If a Tire Goes Flat on page 10‑57 for more information. 2. If the vehicle has a wheel cover, loosen the plastic nut caps with the wheel wrench. They will not come off. Then, using the flat end of the wheel wrench, pry along the edge of the cover until it comes off. Be careful; the edges may be sharp. Do not try to remove the cover with your bare hands. Store the wheel cover securely in the rear of the vehicle until you have the flat tire repaired or replaced. If the spare tire will not lower, the secondary latch could be engaged.