Underbody Maintenance
Chemicals used for ice and snow removal and dust control can collect on
the underbody. If these are not removed, accelerated corrosion (rust) can
occur
on
the underbody parts such as fuel lines, frame, floor pan, and
exhaust system even though they have corrosion protection.
At least every spring, flush these materials from the underbody with plain
water. Clean any areas where mud and other debris can collect. Dirt packed
in
closed areas of the frame should be loosened before being flushed. Your
dealer or an underbody vehicle washing system can do this for you.
Chemical Paint Spotting
Some weather and atmospheric conditions
can
create a chemical fallout.
Airborne pollutants
can
fall upon and attack painted surfaces on your
vehicle. This damage can take
two
forms:
blotchy, ringlet-shaped
discolorations, and small irregular dark spots etched into the paint surface.
Although
no defect in the paint job causes this, GM will repair, at no charge
to the owner, the surfaces of new vehicles damaged by this fallout condition
within
12
months or 12,000 miles
(20
000
km) of purchase, whichever
comes first.
This applies only to materials manufactured and sold by General Motors.
Bodies, body conversions or equipment not made or sold by General Motors
are not covered.
6-55
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