Husky 33222 User manual

GMC SIERRA/CHEVROLET SILVERADO
2500/3500 BASE RAIL BRACKET KIT - 2 PIECE
Assembly, Installation, Operation,
and Maintenance Instructions
DEALER / INSTALLER
Provide a copy of these instructions to the end user of this product. These instructions provide
important operating and safety information for proper usage of this product. Demonstrate the
proper use of the product with the end user. Have the end user demonstrate that they understand
the proper use of the product.
END USER
WARNING
Read and follow all instructions included in this manual. Ask your Dealer/Installer for assistance if
you do not understand the proper use of the product. Never remove any decals from the product.
Failure to follow these instructions can result in injury or death.
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PART
NUMBER 33222
INSTALL
TIME
90-120
MINUTES
APPLICATION
For use on GMC Sierra 2500/3500 & Chevrolet Silverado 2500/3500
WARNING
DO NOT EXCEED Recommended towing limits. SEE VEHICLE’S OWNER’S MANUAL.
Use with 10 bolt 30686 base rails. Base Rails are not included with this kit.
PARTS DIAGRAM Meets SAE J2638 Standard
FIGURE 1
Front
CENTER BOLT KIT

TOOLS REQUIRED
3/4” WRENCH & SOCKET
15/16” WRENCH & SOCKET
5/8” DRILL BIT
5/8” TRANSFER PUNCH
150 FT. LB. TORQUE WRENCH
SAFETY GLASSES
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WARNING
CHOKING HAZARD
Small Parts. Not for children under 5 years
CONTENTS
33222
GM/CHEVROLET
2500/3500
BASE RAIL BRACKET KIT
31419
BASE RAIL
1/4” SPACER KIT
32254
BASE RAIL
SPACER TUBE
33156
CENTER
BOLT KIT
32767
CLIP-ON NUT
SERVICE KIT
ITEM
NO. DESCRIPTION QTY QTY QTY QTY QTY
1 DRIVER SIDE BRACKET 1 - - - -
2 PASSENGER SIDE BRACKET 1 - - - -
3 CLIP-ON NUT 4 - - - 4
4 SPACER PLATE FOR 5/8” CARRIAGE BOLT 2 - - - -
5 5/8” FLAT WASHER 2 - - - -
6 5/8” LOCK WASHER 2 - - - -
7 5/8” -11 X 2.25” CARRIAGE HEAD BOLT 2 - - - -
8 5/8” -11 HEX NUT 4 - - - -
9 5/8” -11 X 3.5” HEX HEAD BOLT 4 - - - -
10 5/8” FLAT WASHER (BLACK) 6 - - 2 -
11 5/8” LOCK WASHER (BLACK) 4 - - - -
12 U-BOLT SPACER 2 - - - -
13 U-BOLT 2 - - - -
14 1/2” -13 NYLOCK NUT 4 - - - -
15 1/2” FLAT WASHER 4 - - - -
16 SPACER PLATE 8 4 - 4 -
17 PULL WIRE 1 - - - -
18 SPACER TUBE 4 - 4 - -
19 5/8” -11 X 6” CARRIAGE HEAD BOLT 2 - - 2 -
20 5/8” LOCK WASHER 2 - - 2 -
21 5/8”-11 NUT 2 - - 2 -
22 CENTER BOLT KIT INSTRUCTION 1 - - 1 -

WARNINGS/SAFETY PRECAUTIONS
1. The following instructions should be used to mount the base rail. Care and attention to detail will ensure a quick
quality installation. Check parts against parts list to become familiar with parts in kit.
2. Raise rear of truck high enough to allow jack stands to be placed under rear spring hanger bracket of truck. This
will provide maximum room to install the fifth wheel brackets.
3. Do NOT install base rails over plastic bed liners or bed mats. Plastic bed liners must be cut out of the way. Base
rails may be installed on dry/cured spray in liner. Note: Consult installer for recommended curing time.
4. Use only the supplied bolts, nuts, and washers to install this kit. All nuts and bolts are Grade 5 unless specified
otherwise.
5. The rear wheel well liners and the spare tire will need to be removed to access the frame for bracket installation.
Removing the rear wheels is not mandatory but can greatly decrease the number of obstacles when performing
the installation.
6. In most applications the measurements are given from the rear edge of truck bed to rear edge of the closest
base rail.
7. Place the two base rails across the truck bed between the wheel wells. Position the 5th wheel uprights between
the base rails so that the tabs in the base of each upright will fit into the slots in the ends of the bed rails. Secure the
uprights in place with the rail hitch pins and hair pins supplied with the 5th wheel installation kit. Securely attach
5th wheel cross member to uprights.
8. On most applications, the 5th wheel assembly should be positioned so that it is approximately centered over
the truck axle and between the wheel wells on the bed floor. See Figure 2 on page 4
WARNING: If the truck is raised, be sure that the truck is properly blocked and restrained to prevent
the truck from falling. Failure to do so may result in the truck suddenly falling, causing death or
serious injury.
WARNING: These instructions are guidelines only. Actual installation is the responsibility of the
installer and the owner. Always measure truck and trailer before installing hitch to be sure that
there is clearance at the cab and at the bumper to allow for turns.
WARNING: Check for obstructions before drilling. Failure to do so could result in damaged fuel or
brake lines, structural members, etc. HUSKY TOWING PRODUCTS 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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FIGURE 2
Forward
Forward
(10 Bolt Base Rails #30686)
28-3/4” 8’ Box
26-1/2” 6’-10” Box
Diagonal measurements
must be the same both
directions as shown
Rear edge of truck bed
FIGURE 3
Use the 2nd slot from the
end of the base rail to drill
hole for 5/8” bolt in rear
rail location
#9
#11
#10
#18
Base Rail
#3 #16
Base Rail
#9
#11
#10
#18
#16 #3
DRIVER SIDE OF FRAME IS SHOWN

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NOTE: To keep the trailer from hitting the cab on tight turns, there must be at least 52” between the center of the
hitch and the cab. A roller/glider should be used when installing a fifth wheel with a truck bed shorter than 8’.
Consult the Husky Towing Products catalog to select the product that best matches your needs.
9. When the hitch is correctly positioned in the bed and the bed rails are parallel (See Figure 2 for measurements)
mark the four attachment points on the truck bed using the 5/8” rectangular slots towards the ends of each bed
rail as a guide. The use of a 5/8” transfer center punch will ensure that the marks are correctly marked on the bed
floor. CHECK BELOW THE BED BEFORE DRILLING HOLES TO ENSURE THAT ALL WIRING, BRAKE LINES OR OTHER
OBSTRUCTIONS ARE MOVED OUT OF THE WAY AND WILL NOT BE CONTACTED BY THE DRILL BIT. Move the
hitch assembly out of the way and drill four 5/8” diameter attachment holes down through the bed at the previously
marked points.
10. Reposition the bed rails in the bed so that the square 5/8” hole in the end of each rail is lined up over the drilled
holes see fig. 2. Place a 1” spacer tube (#18) under ends of each bed rail, in line with the drilled holes as shown in
Figure 4.
Forward
FIGURE 4
#9
#11
#10
#18
Base Rail
#3 #16
Base Rail
#9
#11
#10
#18
#16 #3
11. If the bed corrugation above the frame bracket is UP, leaving a space above the frame bracket, place a spacer
plate (#16) in this location as shown in Figure 5A. If the corrugation is DOWN, at this location, place a spacer plate
(#16) in the bed, under the base rail as shown in Figure 5B.
Spacer Plate #16
Base Rail
Bed
Corrugation #16
Bracket
Bed
Corrugation
#16 Bracket
Spacer Plate under the bed Spacer Plate over the bed
Figure: 5A Figure: 5B
FIGURE 5A FIGURE 5B

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12. Position the clip-on nuts (#3) on the driver side bracket (#1) as shown. See Figure 6.
#3
#3
#1
DRIVER SIDE SHOWN
Forward
FIGURE 6
13. Position the driver side bracket (#1) up against the outer surface of the truck frame with the mounting tabs
positioned over the frame and under the bed in-line with previously drilled holes in the truck bed. See Figure 7.
14. Install u-bolt (#13) on inside of truck frame; facing outward. See Figure 7.
15. Slide spacer plate (#12) over u-bolt (#13) and between the driver side bracket (#1) and the truck frame. See
Figure 7.
#12
#13
#1
#3
#3
Forward
Truck Bed Not Shown for
clarification purposes
DRIVER SIDE SHOWN
FIGURE 7

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16. Loosely install ½” nylock nuts (#14) and ½” washer (#15) as shown. See Figure 8.
DRIVER SIDE SHOWN
FIGURE 8
#14 #15
17. Attach pull wire (#17) to 5/8” carriage bolt (#7) and slide 5/8” spacer plate (#4) over pull wire onto carriage
bolt. Pull carriage bolt and spacer through the hole on the back side of the truck frame and pull through the front
of the driver side bracket. See Figure 9.
Hole on the back side of the
truck frame
Front hole of driver side
bracket. (carriage bolt shown)
DRIVER SIDE SHOWN
FIGURE 9
#7
#4
#17

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18. Loosely install 5/8” flat washer (#5), 5/8” lock washer (#6) and 5/8” nut (#8) onto 5/8” carriage bolt (#7) as
shown. See Figure 10.
Driver Side
Bracket #1
Truck
Frame
#4
#5 #6 #8
#7
#5 #6 #8
19. Loosely install the 5/8” bolt (#9), 5/8” lock washer (#11) and 5/8” flat washer (#10) through the base rail, the
1” spacer tubes, the spacer plate, the truck bed, the 5/8” holes drilled in the truck bed into the clip nuts (#3). See
Figure 11.
DRIVER SIDE SHOWN
FIGURE 10
FIGURE 11

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20. Repeat Steps 11 through 19 for the passenger side bracket (#2).
21.Tighten all 1/2” attachment fasteners to 75 ft.-lbs. and the 5/8” fasteners to 150 ft.-lbs. torque. Failure to tighten
bolts as described may result in fastener loss or failure.
DO NOT TIGHTEN CLIP-ON NUTS (#3). YOU WILL DAMAGE THE CLIP-ON NUT IF YOU DO. APPLY TORQUE TO
THE 5/8” BOLT INSTEAD.
22. Install center bolt kit as directed in center bolt instructions (#22).
23. Check each rail hitch pin for freedom of movement in the bed rail connection. Adjust uprights, if necessary, by
placing shim between the upright and the cross member to obtain free pin movement. See Figure 12.
FIGURE 12
Shim Location
Crossmember
Upright
Shim
Shim Location
24. Re-install the rear wheel well liner, the rear spare tire, and any removed wheels. You have completed the
installation of your bracket kit.
FAQS
PROBLEM WHAT TO LOOK FOR SOLUTION
Hitch is difficult to
install and remove
from the base rails
Hitch is not assembled correctly. Refer to Hitch Assembly section for proper assembly
instructions.
Base Rails are not parallel with
each other.
Use spacer or 5th wheel uprights to hold both base
rails parallel while loosening and retightening the
carriage bolts.
Truck bed collapsing around
carriage bolts in base rails.
Install proper spacers between the base rail and
corrugations. Refer to installation instructions for
specific directions.
MAINTENANCE
1. Inspect the hitch and installation kit each time before connecting a trailer, check to ensure all fasteners are tight
and there are no cracks or excessive wear.
2. Check hardware for correct torque after first 100 miles, and annually thereafter.

WARRANTY
TECH & WARRANTY SUPPORT:
PHONE: [phone]
EMAIL: warr[email protected]
FAX: [phone]
WARRANTY TERMS
5 Year Limited Warranty:
Husky Towing Products and Keystone Automotive Operations Inc. make no guarantees or warranties for products
not manufactured by Keystone Automotive Operations Inc. Such products are covered solely under any applicable
warranty of the manufacturer. It is always recommended that the operating instructions and warranty instructions
provided by the manufacturer are followed.
Keystone Automotive Operations Inc. warrants its products to be free from manufacturing and material defects
to the original purchaser for the length of warranty stated above from the date of retail purchase. If any products
are found to have a manufacturing or material defect, the product will be replaced or repaired at the option of
Husky Towing Products and Keystone Automotive Operations Inc. with proof of purchase by the original purchaser.
The original purchaser shall pay all transportation and shipping costs associated with the return of the defective
prod uct and the defective product shall become the property of Keystone Automotive Operations Inc.
The Warranty applies to Keystone Automotive Operations Inc. products used for individual and recreational
pur poses. Commercial usage of the Keystone Automotive Operations Inc. products limits the warranty to 90-days
from date of purchase.
The Warranty applies only to Keystone Automotive Operations Inc. products which are found to be defective in
manufacturing or material. This warranty does not apply to normal wear and tear of the finish placed on Keystone
Automotive Operations Inc. products.
Husky Towing Products and Keystone Automotive Operations Inc. are not responsible for any labor costs incurred
for removal or replacement of the defective product.
Husky Towing Products and Keystone Automotive Operations Inc. are not responsible for repair or replacement of
any product under the limited warranty where the product was improperly installed, misapplied, altered, abused,
neglected, overloaded, misused or damaged as a result of an accident, including any use of the product not in
accordance with all product operating and safety instructions.
Without limiting the generality of the foregoing, Husky Towing Products and Keystone Automotive Operations
Inc. shall under no circumstances be liable for any incidental or consequential loss or damage whatsoever arising
out of, or in any way relating to any such breach of warranty or claimed defect in, or non-performance of the
prod ucts. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the
above exclu sion or limitation may not apply to you.
This limited warranty gives you specific legal rights, and you may also have other rights that vary from state to
state.
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