2003 GMC Savana Van Owner's Manual - Page 326

Incorrect wheel nuts or improperly tightened wheel nuts can cause the wheel to come loose and even come off. This could lead to an accident. Be sure to use the correct wheel nuts. If you have to replace them, be sure to get new GM original equipment wheel nuts. Stop somewhere as soon as you can and have the nuts tightened with a torque wrench to the proper torque specification. See "Capacities and Specifications" in the Index for wheel nut torque specification. Notice: Improperly tightened wheel nuts can lead to brake pulsation and rotor damage. To avoid expensive brake repairs, evenly tighten the wheel nuts in the proper sequence and to the proper torque specification. See "Capacities and Specifications" in the index for the wheel nut torque specification. 10. Put the wheel cover back on, or put the center cap and plastic wheel nut caps back on. Remove any wheel blocks. Remember that the jack, jacking equipment and tire must be properly stored in their original storage position before you begin driving again. The next part will show you how. 5-83