DO NOT OVER TORQUE. STANDARD OPERATING LOAD FOR TIGHTEN
BODY MOUNT NUTS & BOLTS VARIES FROM
TO
FOOT POUND.
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
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.
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.
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