Installation Instructions
15 GMC HD Premium Front Bumper
Product Number: C3150, C3151, C3152
Application: 2015-2019 GMC HD
Copyright 2008 Fab Fours, Inc.
Page 8 of 21
C315X_REV_A
III. Pre-Installation
NOTE: PLEASE READ THE ENTIRE MANUAL BEFORE
ATEMPTING INSTALLATION!
Ignoring these steps will increase your probability of scratching
the vehicle and damaging the sensors during product
installation.
A. Remove the bumper from the shipping carton. Lay all items out on a
blanket to prevent damage to the powder coating.
B. Place sensor housing in Fab Four bumper replicating the orientation
seen in the images below. The housings should slide in freely and not be
forced as this may compress sensor and cause false readings after
installation. After assuring sensors work in current orientation, epoxy
should be applied to the housing on inside of bumper and allowed to dry.
C. For sensor installation, run sensor harness under winch tray. Reverse
steps G through I in previous section, making sure that the clear plastic
grommet around front end of sensor is on properly and sensors appear
centered in their housings. Final installation of sensors on driver side
should appear as follows with passenger side sensors mirrored. (Ref.
Figures 9a-f)
