Installation Guide

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PAGE 6
.25
2
.25 2
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.25 1.5-3
.25 2
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Front of truck
Row 1
Row 2 Row 3 Row 4
Rear edge of truck bed
Each base rail must have a bolt in
either of the marked holes. Check
for obstructions before drilling.
Note: Later models will require
exchanging forward long brackets
side to side and repositioning the
driver-side bracket to row 2.
This is to avoid brake cable
hanger on driver's side,
shown here for clarity.
Rear edge of the truck bed to
the rear edge of the base rail.
30" long box
25-1/8" short box
Axle center
Short bracket
VEHICLE-SPECIFIC INSTALLATION
Chevrolet Silverado / GMC Sierra 1999 (excluding Sierra Classic)
Chevrolet Silverado / GMC Sierra 00 - 10 (including HD models)
Long bracket
Mounting channel
King pin centered over axle
Long box
bed sill
Short box
bed sill
Front of
vehicle
* Optional weld pattern
Note: Fish wire provided.
May be needed to install
hardware into the bracket
through the frame.
Driver-side of
3/4-ton HD shown
IMPORTANT NOTE
Find parallel rows of bed sill spot welds in the bed of the truck. No
drilling should be done in the ~4" between parallel rows of spot welds
where the bed sill sits.
WARNING
Read pages 2 - 4 of this installation manual before beginning the
installation. Failure to do so could result in significant vehicle damage.
Check for obstructions prior to drilling. Failure to do so could result in
damaged fuel or brake lines, structural members, etc.
CURT does its best to communicate tow vehicle manufacturer
changes. However, it is ultimately the responsibility of the installer
to prevent damage due to installation.
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