1997 GMC Suburban Owner's Manual - Page 262

Changing a Flat Tire If a tire goes flat, avoid further tireand wheel damage by driving slowly to a level place. Turn on your hazard warning flashers. r- Changing a tire can cause an injury. The vehicle can slipoff the jack and roll over or other you people. You and they could be badly injured. Find a level place to change your tire. help To prevent thevehicle from moving: 1. Set the parking brake firmly. 2. Put the shift lever in PARK (P). 3. If you have a four-wheel-drive vehicle, be sure the transfer case in a drive is gear not in NEUTRAL (N). 4. Turn off the engine. To be even more certain the vehicle won't move, you can put blocksat the front and rear the of tire farthestaway from the one being changed. of the That would be the tire on the other side vehicle, at the opposite end. I I The following steps will tell you how to use the jack and change a tire. -- L 5-22