2008 GMC Acadia Owner's Manual - Page 392

5. Do not raise the vehicle yet. Put the compact spare tire near you. {CAUTION: Getting under a vehicle when it is jacked up is dangerous. If the vehicle slips off the jack, you could be badly injured or killed. Never get under a vehicle when it is supported only by a jack. 7. Place the jack under the vehicle as identified in Step 3. Raise the vehicle by turning the lug wrench clockwise in the jack. Raise the vehicle far enough off the ground so that there is enough room for the spare tire to fit under the wheel well. 8. Remove all the wheel nuts and the flat tire. {CAUTION: Raising your vehicle with the jack improperly positioned can damage the vehicle and even make the vehicle fall. To help avoid personal injury and vehicle damage, be sure to fit the jack lift head into the proper location before raising the vehicle. 6. Attach the lug wrench to the jack, and turn the wrench clockwise to raise the jack head 3 inches (7.6 cm). 9. Remove the plastic spare tire heat shield by pulling the rubber latch. Store the plastic spare tire heat shield. See Storing a Flat or Spare Tire and Tools on page 5-84 for more information. 5-78