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How to Install T-REX X-Metal Series Upper Grille Insert - Polished (14-15 Sierra 1500) on your GMC Sierra

Installation Time

30 minutes

Tools Required
  • Socket and Ratchet Set
  • Flat/Phillips Screwdrivers
  • Torx Bits
  • Grinder And Grinding Wheel

PARTS LIST


(3) 2 1/2” x w/70 degree ext. flange
(2) 2” w/ 30 degree bend on both
sides. flange
(2) 2” flange bracket
(1) Grille


Step 1 Factory Grille Removal  


Start off by removing the twelve plastic pop clips along the top of the radiator cover using flat screw driver (Fig 1).


Remove the plastic radiator cover (Fig 2).


Remove the four 10mm bolts located along the top of the factory grill (Fig 3).


From underneath the vehicle remove
four 10mm bolts from the bottom backside of the factory grille, two are located in the middle area and two are located underneath each headlamp (Fig 4).



From underneath the front of the vehicle use a flat screwdriver to unclip 6 plastic latches, these latches hold the top
plastic bumper pad to the metal lower section of the bumper (Fig 5).



Now using a T15 torx bit remove two torx bolts from the top and
front edges of each front fenderwell (Fig 6) these bolts hold the fender trim to the fender.



Pull back the fender trim and remove one 7mm bolt from the front of both front fenderwells (Fig 7) located just behind where you removed the forward torx bolts.



Pull the sides of the plastic bumper top pad outward and pull the pud forward and carefully remove the bumper top pad (Fig 8 & 9).


Remove four 10mm bolts from along the bottom of the factory grill shell (Fig 10).


With a helper, pull up on the plastic plate along the top of the factory grille while pulling forward, the factory grille will pop loose along the top (Fig 11).


Remove the factory grill from the vehicle. Place the factory grill on a workbench, on the backside of the factory grill remove eleven 7mm bolts holding the plastic air vent to the
grill (Fig 12). 



Remove the plastic air vent. Now remove remove four 7mm bolts and unlatch sixteen plastic latches with a flat screwdriver (Fig 13). 


Seperate the front and back halves of the factory grill (Fig 14).

Step 2 Mesh Grille Installation  



Take the black plastic back section of the factory grill, you will need to cut out the center section. On the backside of the plastic use a cutting wheel and grinder to cut along the ridge around the opening highlighted white in (Fig 15 & 16). 


Smooth the cut edge with the grinding wheel. The cut black section should look like (Fig 17) when fnished. 


Take the black plastic back section of the factory grill and the grille shell and
reassemble them into one section , just the same way they were before you
seperated them. From the backside of the assembled grille take the mesh grille
and insert it into the opening you cut with the grinder (Fig 18). 



Take the three 2 1/2” x w/70 degree ext flange brackets from the parts bag and install them onto the three tabs along the top of the mesh grille (Fig 19) using the factory hardware to secure the brackets.

Now on the bottom side of the mesh grille use the
two 2” flange brackets (these are the one with a slight bend at both ends) on
the two center brackets on the mesh grille. The remaining two flange brackets
(the one with a bend on one side) will install onto the two outside brackets on
the mesh grille and also install with the factory hardware. On the four tabs on
the sides of the mesh grille use the factory hardware with bo flange brackets
(Fig 20).




Now replace the air vent plastic back onto the back of the completed grille assembly, use the existing factory hardware to secure the plastic air vent to the grill shell assembly (Fig 21). Reinstall the bumper top pad, reinstall
the completed grille assembly back onto the vehicle in the reverse order of
removal. Do not forget the fenderwell hardware needs to be reinstalled as well. 


Installation completed.


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