Chevrolet 2004 Silverado 1500 Pickup Owner's Manual page 490

2. 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.
Notice: If your vehicle has QUADRASTEER™ and
you use a jack to raise the vehicle without
positioning it correctly, you could damage the
QUADRASTEER™ system. When raising your
vehicle on a jack, avoid contact with tie rods and tie
rod boots.
5-98
Jacking Locations
A. Front Location (2-Wheel Drive 1500 Series)
B. Front Location (All Other Series)
C. Rear Location (All Series)
3. Position the jack under the vehicle as shown. If the
flat tire is on the front of the vehicle (Two-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.