Chevrolet 1998 Tracker Owner's Manual page 227

Removing the Flat Tire and Installing the
Spare Tire
1. Using the wheel wrench, loosen all the wheel nuts.
Don't remove them yet.
2. Position the jack and raise the jack lift head until it
fits firmly onto the notches nearest to the flat tire.
(Under the vehicle near each wheel, there are
notches in the vehicle's rocker flange.)
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