GMC 2011 Sierra Denali Owner's Manual page 443

To clean:
1. Saturate a lint-free, clean white
cloth with water or club soda.
2. Remove excess moisture.
3. Start on the outside edge of the
soil and gently rub toward the
center. Continue cleaning, using
a clean area of the cloth each
time it becomes soiled.
4. Continue to gently rub the
soiled area.
5. If the soil is not completely
removed, use a mild soap
solution and repeat the cleaning
process that was used with plain
water.
If any of the soil remains, a
commercial fabric cleaner or spot
lifter may be necessary. Test a small
hidden area for colorfastness before
using a commercial upholstery
cleaner or spot lifter. If the locally
cleaned area gives any impression
that a ring formation may result,
clean the entire surface.
A paper towel can be used to blot
excess moisture from the fabric or
carpet after the cleaning process.
Leather
Leather, and lighter colored leather
in particular, will need more frequent
cleaning to prevent the buildup of
dust, dirt, and colors transferred
from other items so that these do
not become permanent stains.
To remove dust, a soft cloth
dampened with water can be used.
If a more thorough cleaning is
necessary, a soft cloth dampened
with a mild soap solution can be
used. Your dealer has a GM
approved leather cleaner available
Vehicle Care
that provides superior cleaning
performance when used regularly
on finished automotive leathers.
Allow the leather to dry naturally.
Do not use heat, steam, spot lifters
or spot removers, or shoe polish on
leather. Many commercial leather
cleaners and coatings that are sold
to preserve and protect leather
may permanently change the
appearance and feel of the leather
and are not recommended. Do not
use silicone or wax-based products,
or those containing organic solvents
to clean the vehicle's interior
because they can alter the
appearance by increasing the
gloss in a non-uniform manner
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