09-08-66-011B

File in Section:
Service Bulletin
08 - Body and Accessories
Bulletin No.:
09-08-66-011B
Date:
January, 2013
INFORMATION
Subject:
Information on Mounting Points for Pickup Box Accessories
Models:
2007-2013 Chevrolet Silverado
2007-2013 GMC Sierra
This bulletin is being revised to add the 2012-2013 model years and include
Additional Keywords. Please discard Corporate Bulletin Number 09-08-66-011A
(Section 08 – Body and Accessories).
The pickup box was designed for the use of add-on
equipment. However there are specific mounting points
that must be used along with weight restrictions. Refer
to the following Chart 1 – Weight Restrictions for Pickup
Box Add-Ons. Structural members have been added to
provide load paths directly to the platform cross-sills
and into the vehicle frame. Aftermarket accessories
should take advantage of these intended load paths as
detailed below in Figures 1-4.
Depending on the accessory design, it may be
necessary to add some form of a spacer under the
accessories at the structural hard points to take up any
gap. Do not use the GM Cargo Management Option
mounting points for attaching anything other than the
GM Cargo Management system as referenced in
Figure 5.
Copyright 2013 General Motors LLC. All Rights Reserved.
Chart 1 – Weight Restrictions for Pickup
Box Add-Ons
Equipment
Maximum Weight
Ladder Rack and Cargo
750 lbs (340 kg)
Cross Toolbox and Cargo
400 lbs (181 kg)
Side Boxes and Cargo
250 lbs per side
(113 kg per side)
The combined weight for all rail-mounted equipment should
not exceed 1,000 lbs (454 kg).
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Figure 1 – Side View - Structural Members
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Figure 2 – Top View - Structural Members
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Figure 3 – Top View - Front Structure
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Figure 4 – Top View - Rear Structure
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Bulletin No.: 09-08-66-011B
Figure 5 – GM Cargo Management Points
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Caution: Overloading the vehicle may cause damage.
Do not overload the vehicle. When you carry removable
items, you may need to put a limit on how many people
you carry inside your vehicle. Be sure to weigh your
vehicle before you buy and install the new equipment.
Remember not to exceed the Gross Axle Weight Rating
(GAWR) of the front or rear axle.
If the vehicle is damaged due to overloading, repairs
would not be covered by the vehicle warranty. The load
bearing structural information is also included in the
Body Builder’s manual at www.gmupfitter.com.
Additional Keywords: Bed, Tool box, Equipment.
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these
technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper
service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a
job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your
vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the
information.
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