Chevrolet 2004 Avalanche, Owner'S Manual

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All-Weather Cargo Area
Your vehicle has the ability to operate in many different
configurations (cargo panels on or off, midgate up or
down, rear glass in or out), allowing the cargo and
passenger area to be open to the environment. To allow
the vehicle to operate in these configurations, it is
equipped with features to help it resist the elements and
protect cargo inside the cargo area. Parts of the
water management system, which is designed to quickly
direct water out of the cargo box, are the top drain
grates, side rail channels, catch cups, midgate drain,
cargo area floor drains and the rubber cargo mat.
Even when the water management system is working
properly and the cover system is on, there may be some
instances (heavy rains, automated car washes, etc.)
when water may be present in the following areas:
A. Top drain grates
B. Removable front drain grate (Midgate drain gate)
C. Side rail channels and catch cups
D. Front drains
E. Water drainage area (around both sides of the box
and the tailgate side)
F. Rear drains
G. Cargo floor
H. Cargo mat (central area of mat is intended to be dry)
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