1999 GMC Suburban Owner's Manual - Page 262

yellowblue Changing a Flat Tire If a tire goes flat, avoid further tire and wheel damage by driving slowly to a level place. Turn on your hazard warning flashers. CAUTION: Changing a tire can cause an injury. The vehicle can slip off the jack and roll over you or other people. You and they could be badly injured. Find a level place to change your tire. To help prevent the vehicle 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 is in a drive gear -- not in NEUTRAL (N). 4. Turn off the engine. To be even more certain the vehicle won't move, you can put blocks at the front and rear of the tire farthest away from the one being changed. That would be the tire on the other side of the vehicle, at the opposite end. The following steps will tell you how to use the jack and change a tire. Removing the Spare Tire and Tools The equipment you'll need is located in the rear cargo area. You'll also find your spare tire there. On two-door utility and Suburban models, the spare tire is located at the rear of the vehicle. To remove the spare tire, first open the tire cover, if you have one. Turn the wing nut counterclockwise and take it, and the adapter, off the bolt. Take the tire out of the vehicle and remove the tire cover. 5-20