GMC 1998 Safari Owner's Manual page 304

5. Reverse Steps 1 through 4 to reinstall the taillamp.
Pinch the two tabs on the wiper
a r m
and slide the insert
out of the blade. Slide the new one in place. Make sure
the tabs are locked into position. See "Normal
Maintenance Replacement Parts" in the Index for the
proper type of replacement blade.
Tires
Your new vehicle comes with high-quality tires made by
a leading tire manufacturer. If you ever have questions
about your tire warranty and where to obtain service, see
your GM Warranty booklet for details.
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