GMC 1995 Jimmy Owner's Manual page 36

The lap part
of
the belt should be worn low and snug on the hips, just
touching the thighs. In a crash, this applies force to the strong pelvic bones.
And you'd be less likely to slide under the lap belt. If you slid under it, the
belt would apply force at your abdomen. This could cause serious
or even
fatal injuries. The shoulder belt should go over the shoulder and across the
chest. These parts of the body are best able to take belt restraining forces.
The safety belt locks if there's a sudden stop or a crash.
On four-door models, the safety belt also locks if
you
pull the belt very
quickly out of the retractor.
I
To unlatch the belt, just push the button on the buckle.
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