STEP 1. Remove the contents from box and check for damage. Verify all parts are present. Read instructions completely before beginning
STEP 2. Determine passenger and driver uprights and center section assembly and assemble as shown. Hand tighten all fasteners centered in slots or holes. Be sure dimple in ring mount plate is to the top.
STEP 3. For easier installation, it may be necessary to remove grille from vehicle but it’s not necessary on all models. Remove plastic shroud to gain access to grille by removing seven plastic pin retainers. Pull center pin up with a small flat tip screwdriver. Remove 6mm bolt from top of grille. Pull on outer edge of grille by applying firm pressure away from the fender, repeat on the opposite side and center section. Carefully remove grille from vehicle.
STEP 4. Determine passenger and driver top and bottom brackets. Remove factory bumper bolts from top side of frame (located behind the top side of bumper), then attach brackets as shown.
STEP 5. Attach bottom brackets as shown. Leave loose.
NOTE: If tow hooks are present, remove for installation. grille guard as shown. Center and level grille guard as desired.
STEP 6. If grille was removed see step 7. If not, attach.
STEP 7. It may be necessary to adjust center section to uprights. Torque 1/2” fasteners to 65 FT.LBS; 12mm fasteners to 60 FT.LBS. and 3/8” fasteners to 30 FT.LBS. If grille was removed, attach grille guard to mount brackets as shown. Center and level grille guard as desired. Hand tighten bolts securing brackets to vehicle. Torque center section to upright fasteners to 30 FT.LBS. Remove grille guard only and re-install grille and plastic shroud. Re-attach grille guard and torque 1/2” fasteners to 65 FT.LBS; 12mm fasteners to 60 FT.LBS. and 3/8” fasteners to 30 FT.LBS.
Get pdf 2003-Up GMC Sierra 2500/3500HD 2/4 Wheel Drive Grille Guard Installation Instructions