GMC 1995 Jimmy Owner's Manual page 192

Using heavier suspension components to get added durability might not
change your weight ratings. Ask your dealer to help you load your vehicle
the right way.
1
NOTICE:
Your warranty does not cover parts or components that fail
because of overloading.
If you put things inside your vehicle - like suitcases, tools, packages, or
anything else
-
they will go as fast as the vehicle goes. If you have to stop
or turn quickly, or if there is a crash, they'll keep going.
There's also important loading information for off-road driving in this
manual. See "Loading Your Vehicle" in the Index.
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