TrailFX 21020 Series Installation Instructions

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Part No. 21020X, 21022X, 21024X
Do not over tighten as screws can be stripped out.
REMOVE CONTENTS FROM BOX. VERIFY ALL PARTS ARE PRESENT.
READ INSTRUCTIONS CAREFULLY BEFORE STARTING INSTALLATION.
DO NOT OVER TORQUE. STANDARD OPERATING LOAD FOR TIGHTEN
BODY MOUNT NUTS & BOLTS VARIES FROM 45 TO 65 FOOT POUND.
1/2" Socket Wrench,
Phillips Driver.

1. INSTALLATION PROCEDURE:

WARNING:

Do not transport a pickup truck facing backward with a liner installed.

Air can get under the liner which may result in the liner coming out of the truck and causing damage or injury.
Truck Box Preparation:

Clean truck box of all foreign matter and open any floor drains to ensure ventilation and moisture drainage.
NOTE:

Bed liner can be installed by one person. However, using two people is recommended by the manufacturer.

2. Tailgate Cover Installation Steps

GM UNDERRAIL
BEDLINER/TAILGATE COVER
Tools Required
#20 Torx driver,
Electric Drill,
STEP 1
Remove the 2 existing factory installed screws from tailgate
latch plate.
STEP 2
Center plastic tailgate cover on truck tailgate. Insert and
tighten the two screws in the two center holes of tailgate.
STEP 3
Center a self-drilling screw in a pre-drilled hole in the tailgate
cover. Fasten the screw to the tailgate with a power
screwdriver (see Figure 1).
Do not over tighten because the screw threads can be
Stripped easily.
STEP 4
Repeat Step 3 to remaining hole locations until all are
completed.
CUTTING NOT
30-60 min
REQUIRED
DRILLING
REQUIRED