Fab Fours VC3900 User manual

Installation manual
ViCowl
Product number: VC3900
Application: 2019 GMC 1500

IMPORTANT SAFETY GUIDE | Your safety and the safety of others is very important.
SAFETY PRECAUTIONS
In order to help you make informed decisions about safety, we have provided the following warnings,
safety precauons, installaon instrucons, and other important informaon to alert you to potenal
hazards that could hurt you or others.
Please do a job safety analysis before each task to idenfy potenal hazards for your situaon and
remove/protect against them. Use own good judgment and take your me. Check packaged materials
immediately upon arrival to ensure that all listed parts are included and undamaged.
Read and understand all warnings, safety precauons, and instrucons before installing this
product.
SENSORS FIELD OF VIEW WILL BE ALTERED WITH USE OF THE REPLACEMENT BUMPER.
• Failure to observe the following warnings and instrucons provided in this manual could lead to
severe injury and/or death.
• For professional installaon only. Careless installaon and/or operaon can result in serious injury,
death, and/or equipment damage. All liability for installaon and use rests with the user or consumer.
• Fab Fours, Inc. Only approves installing this product according to these wrien instrucons with the
hardware provided. Failure to install according to these instrucons will invalidate the warranty. This
includes, but is not limited to, using alternave installaon methods, hardware, or materials.
• This product is for o road use only.
WARNINGS
• Always remove jewelry and wear eye protecon.
• Always use extreme cauon when jacking up a vehicle for work. Set emergency brake and use re
blocks. Locate and use the vehicle manufacturers designated liing points. Use jack stands.
• Always use appropriate and adequate care in liing components into place.
• Always ensure components will remain secure during installaon and operaon.
• Always wear safety glasses when installing this kit. A drilling operaon will cause ying metal chips.
Flying chips can cause serious eye injury.
• Always use extreme cauon when drilling a vehicle. Always disconnect power before welding.
Thoroughly inspect the area to be drilled (on both sides of material when possible) prior to drilling,
and relocate any objects that may be damaged.
• Always use extreme cauon when welding a vehicle. Thoroughly inspect the area to be welded (on
both sides of material when possible) prior to welding, and relocate any objects that may be a re
hazard. When welding in a cab, make sure the interior surfaces are covered (e.g., welding blanket) and
a re exnguisher is at hand.
• Always use extreme cauon when cung and trimming during ng.
• Always ghten all nuts and bolts securely per installaon instrucons.
• Always route electrical cables carefully. Avoid moving parts, components that become hot, and
rough or sharp edges.
• Always insulate and protect all exposed wiring and electrical terminals.
• Perform regular inspecons and maintenance on mounts and hardware.

Table of contents
SAFETY / DISCLAIMER
TABLE OF CONTENTS
A MESSAGE FROM THE OWNER
GETTING STARTED
PROVIDED MATERIAL
DISASSEMBLY
HOOD HINGE INSTALLATION
HOOD INSTALLATION
VICOWL PREASSEMBLY
VICOWL INSTALLATION
CONTACT
2
3
4
5
6-7
8
10
13
14
16
19

A message from the owner
Fab Fours’ was born out of a passion for customizing vehicles and a love of the outdoors. Our
engineering team uses the latest 3D design soware to turn new product ideas into reality. In our
factory, designs come to life with the combinaon of cung edge technology for metal cung
and forming and an American workforce that puts it’s heart and pride into every product.
From design and manufacturing, to quality and delivery, Fab Fours’ mission is to be the market
leader for steel truck and jeep accessories. We make sure a quality product is delivered on me,
more than expected, beer than expected to our customers.
Enjoy your new Fab Fours product. Welcome to the family!
Greg Higgs
Founder, Fab Fours

5
Before you begin the installaon process of your new Fab Fours product, we suggest
laying out all materials and parts on a pad or protecve surface.
Failure to fully account for all components before beginning installaon may leave vehicle
immobile unl part is acquired. Refer to the next pages as an inventory check.
Getting started

Provided materials
50161-HW VC3900-IM
HW IM
61724
21766 21765
21743
21313
61723
21767
21771 21770
21768 21769
61720- QTY: 2

7
Hardware kit | 50161
• 3/16” Allen Wrench
• 7/23” Allen Wrench
• 9/16” Open end wrench
• 1/2” Open end wrench
• (2) 7/16” Open end wrench
• 3/8” Drive ratchet
• 3/8” Drive, 9” extension
• 3/8” Drive 9/16” socket
• 3/8” Drive, 1/2” socket
• 3/8” Drive, 13mm socket
• Scissors
• 1/4” Drill bit
• 3/8” Drill bit
• Painters tape
• Pen or pencil
• Knife
• Pick or small at head screwdriver
• Plasc panel pry bar
• 6” Ruler
TOOLS REQUIRED
Disassemble the vehicle where you
can catalog and store everything.
We suggest labeling and bagging all
the OEM bolts when removing from
the vehicle. Failure to keep track of
parts could lead to an inability to
properly reinstall components.
Organization
We recommend two people
perform the installaon as items
are heavy and may need to be held
in place while installing.
Installation
Fab Fours
Identification
Component
Description
QTY
50161- HW Oil-embedded thrust bearing 2
50161- HW Oil-embedded anged sleeve bearing 2
50161- HW Threadlocker, blue locte® 242, 0.02 oz. capsule 1
50161- HW 3/8"-16 x 1 1/4 ", yellow zinc, hex cap screw, grade 8 6
50161- HW 5/16”-18, Nylock hex nut 11
50161- HW 5/16”, stainless steel, at washer 11
50161- HW 5/16”-18 x 3/4", stainless steel, buon head cap screw 9
50161- HW 5/16", rubber bonded sealing washer 9
50161- HW 1/2”, yellow zinc, at washer, grade 8 2
50161- HW 17/32” drill bit with a 1/2” shank 1
50161- HW 3/8"- expandable inset tool 1
50161- HW 3/8"-16 X 3/4” stainless steel, buon head cap screw 10
50161- HW 3/8", rubber bonded sealing washer 10
50161- HW 3/8"-16, knurled Rivet Nut 4
50161- HW 10mm, stainless steel, ball stud, 5/16"-18 threads 2
50161- HW 3/8", yellow zinc, at washer, grade 8 10
50161- HW 3/8", yellow zinc, lock washer, grade 8 6
50161- HW 3/8"-16, yellow zinc, Nylock nut, grade 8 2
50161- HW 1/4”-20 x 1”, yellow zinc, hex cap screw, grade 8 2
50161- HW 1/4"-20, yellow zinc, hex nut, grade 8 2
50161- HW 1/4", yellow zinc, lock washer, grade 8 2
50161- HW 1/4", yellow zinc, at washer, grade 8 4

DISASSEMBLY
1. Apply a small amount of blue painter’s
tape across the hood and fender on both
driver and passenger side. Mark the tape
with a straight-line perpendicular with the
hood and fender body seam. Use a knife
to cut the tape along the hood and fender
seam.
Note: Step one is recommended to assist
you in realignment of the hood during
reassembly.
2. Loosen the four (4) OEM nuts on each
side that secure the hood to the upper hood
hinge bracket so they can be removed by
hand. (Figure 1)
3. Disconnect any electrical connecons
and washer uid lines if your vehicle is
equipped.
4. With assistance, remove the hood bolts
and remove the hood.
6. Remove the three (3) screws holding the
splash shield to the wheel well. (Figure 2,
#1)
Figure 1
Figure 2
5. Remove both the wiper cowl trim panel
from both the driver side and passenger
side by pulling out towards the center of the
windshield.
7. Remove the single bolt from the splash
shield. (Figure 2, #2)

9
8. Remove the splash shield from the fender
area and set aside for future reinstallaon.
9. Remove the eleven (11) wheel well liner
bolts. (Figure 3, #1)
10. Remove retainer from the wheel well liner.
(Figure 3, #2)
11. Remove the wheel well liner on both
sides of the vehicle and set aside for future
reinstallaon. (Figure 3, #3)
12. Using a small pick or screwdriver, pry out
on the metal spring clip (Figure 4, #2). Pull the
air spring head (Figure 4, #1) away from the
ball stud (Figure 4, #4) while the spring clip is
pulled away. Disconnect the air spring from the
bracket only and leave aached to frame rail.
Rotate forward out of the way.
Figure 5
Figure 4
13. Remove the two (2) lower hood hinge bolts.
(Figure 5, #1)
14. Remove the hood hinges from the fender area
and set aside as they won’t be used with this product.
Figure 3

2. Stack the 3/8”-16 Nylock nut on the at
washer and place over the brass bushing. Add
the brass thrust washer, followed by the lower
bracket, at washer and 3/8”-16 hex cap screw.
Tighten the Nylock nut making sure the thrust
washer does not pop out of the brass bushing.
(Figure 6)
1. Install the brass bushing into the upper hole
in the upper bracket. (Figure 6)
3. Fully assemble and ghten the driver side
hood hinge opposite of what is shown in
Figure 6.
4. Using a 7/16” wrench, install and fully ghten
the antenna to the passenger side bracket using
the 1/4”-20 yellow zinc hex cap screw, yellow
zinc at washer, yellow zinc at washer, yellow
zinc lock washer and yellow zinc hex nut bolt
stack provided in the hardware kit. (Figure 7)
Hood Hinge installation
Figure 6 (Passenger Side)
Figure 7