1999 Chevrolet Silverado 1500 Pickup Owner's Manual - Page 284

yellowblue Removing the Flat Tire and Installing the Spare Tire 1. Use the wheel wrench to loosen all the wheel nuts. Turn the wheel wrench counterclockwise to loosen the wheel nuts. Don't remove the wheel nuts yet. 2. Position the jack under the vehicle. If the flat tire is on the front of the vehicle (2-Wheel Drive 1500 Series vehicles), position the jack under the bracket attached to the vehicle's frame, behind the flat tire. If the flat tire is on the front of the vehicle (All other models), position the jack on the frame behind the flat tire. If the flat tire is on the rear, position the jack under the rear axle between the spring anchor and the shock absorber bracket. If you have added a snow plow to the front of your vehicle, lower the snow plow fully before raising the vehicle. 5-24