'07 -'13 GM Trucks – Rear
Installation Manual
NOTE: We recommend Dry-Fitting all BumperShellz pieces to their specific locations BEFORE removing ANY of
the red backing strips from the tape. Make sure all pieces are correct, i.e., you have received all pieces shown
above, with or without sensor holes, etc., color/pattern is correct, and that all are undamaged. There should
not be any (or extremely minimal) bumper surface visible once flanges are slid under trim and sensor holes (if
present) are centered over sensor trim. Dry Fitting is also good practice for lining up each piece and guiding it
into place, visualizing how to do it when the backing strips are removed and the tape is STICKY. Note that once
the backing is removed we cannot give full credit for return.
• Begin your BumperShellz™ installation by peeling red backing off the tape strips on the back surface of your
BumperShell. Try not to allow tape to contact bumper until BumperShell is in its proper/final position.
• Start at the lower inboard corner flange and tuck it and the rest of the inboard side flange under the center
trim. Then gently pry up the step pad edge at the upper inboard corner and begin
tucking the top perimeter flange under the step pad trim edge using the same
technique of lifting and sliding. Do not use excessive force, as this may damage
your BumperShellz™ and/or trim. If the BumperShellz™ are not going on, a flange
is probably hung up somewhere on the trim.
• Before completely tucking in the top perimeter flange, tuck the outboard upper
corner of your BumperShellz™ under the trim and then finish tucking in the top
flange. Finally, tuck in the outboard side flange and then lower outboard corner.
NOTE: If you have factory reverse sensors, a clearance hole has been removed from
the area in front of the sensor. Some slight adjustment may be needed to center the
sensor within the hole BEFORE pressing down on the tape.
• If any clips were removed, you can now replace them while making sure the
BumperShellz™ remain in the proper position at all times. The BumperShellz
should now be snugly fit over the steel bumper.
• Press the BumperShellz™ against the bumper in all taped areas and hold for 30
seconds to make sure the tape is adhered.
NOTE for Maximum Adhesion: The acrylic foam tape used to adhere your
BumperShellz is "pressure sensitive", so making sure there is sufficient pressure
applied to each of the taped areas is vital to achieve optimum adhesion of your
BumperShellz™ to your bumper. It is also recommended that you come back a few
hours later, or the next day, to give each BumperShellz piece another pressure rub to
ensure the best adhesion. Allow the tape adhesive to set up for at least 24 hours
before washing your truck. Maximum adhesion is reached after 3-5 days in temperatures above 70 degrees,
longer if it is cooler. Once the adhesive has fully bonded to a properly prepared bumper surface, it is nearly
impossible to remove the BumperShellz without damaging them. Please refer to "removal instructions" in the
BumperShellz FAQ section on the website, should removal be necessary.
Care for your BumperShellz™ like you would any fine paint finish. Use high quality cleaning products
designed specifically for car care.
• Gloss finishes: Minor scratches can often be buffed out. Rubbing compounds can be used with mechanical
buffer for deeper scratches.
• Matte finishes are much more susceptible to abrasions, leaving a "glossy sheen" on the finish, which are
generally permanent. Do not attempt to buff out scratches/abrasions on your matte finish, as this will
generally make the damage worse. Avoid excessive friction when trying to remove anything stuck to the
matte finish surface and keep cleaning rags/water clean and abrasive free. Abrasive brush-type car washes
are not recommended, as they can abrade the Matte finish. Brushless car washes are acceptable.
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02/2017