Chevrolet 1993 Astro Passenger Owner's Manual page 290

As soon as you've cleaned the section, use a sponge to remove the
suds.
Rinse the section with a clean, wet sponge.
Wipe off what's left with a slightly damp paper towel or cloth.
Then dry it immediately with an air hose, a hair dryer
or a heat lamp.
I
Wipe with a clean cloth.
Using Solvent-Type Cleaner on Fabric
First, see if you have to use solvent-type cleaner at all. Some spots and
stains will clean off better with just water and mild soap.
If you need to use it, then:
Gently scrape excess soil from the trim material with a clean, dull knife
or scraper. Use very little cleaner, light pressure and clean cloths
(preferably cheesecloth). Cleaning should start
at the outside of the stain,
"feathering" toward the center. Keep changing to a clean section of the
cloth.
When you clean a stain from fabric, immediately dry the area with an air
hose, hair dryer, or heat lamp to help prevent a cleaning ring. (See
previous NOTICE.)
Fabric Protection
Your vehicle has upholstery that has been treated with ScotchgardTM Fabric
Protector, a 3M product. ScotchgardTM protects fabrics by repelling oil and
water, which are the carriers of most stains. Even with this protection, you
still need to clean your upholstery often to keep it looking new.
Further information on cleaning is available by calling 1-800-433-3296 (in
Minnesota, 1-800-642-61 67).
Special Cleaning Problems
Greasy
or
Oily Stains: Like grease, oil, butter, margarine, shoe polish, coffee
with cream, chewing gum, cosmetic creams, vegetable oils, wax crayon, tar
and asphalt.
Carefully scrape off excess stain.
Then follow the solvent-type instructions above.
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