GMC 1997 Safari Owner's Manual page 310

Cleaning the Top of the Instrument Panel
Use only mild soap and water
to
clean the top surfaces
of the instrument panel. Sprays containing silicones or
waxes may cause annoying reflections in the windshield
and even make it difficult to see through the windshield
under certain conditions.
Cleaning the Built-in Child Restraint
Your built-in child restraint may be cleaned with mild
soap and lukewarm water. Don't use household cleaners.
They may weaken the harness or damage plastic parts.
The built-in child restraint pad is attached to the child
restraint cushion and seatback with fastener strips. You
can remove the pad, machine wash it in cold water on a
gentle cycle and tumble dry it on a low heat setting.
Never bleach or iron the pad, and don't dry clean it.
Care of Safety Belts and Built-in
Child Restraint
Keep the safety belts and the built-in child restraint
harness clean and dry.
Do not bleach or dye safety belts or the built-in
child restraint harness. If you do, they may be
severely weaken. In a crash, they might not be
able to provide adequate protection. Clean the
safety belts and the child restraint harness only
with mild soap and lukewarm water.
Cleaning Glass Surfaces
Glass should be cleaned often. GM Glass Cleaner (GM
Part No. 1050427) or a liquid household glass cleaner
will remove normal tobacco smoke and dust films on
interior glass.
Don't use abrasive cleaners on glass, because they may
cause scratches. Avoid placing decals on the inside rear
window, since they may have to be scraped off later.
If abrasive cleaners are used on the inside of the rear
window, an electric defogger element may be damaged.
Any temporary license should not be attached across the
defogger grid.