TrailFX TFX1404 User manual

THE TRAILFX BI-FOLD TONNEAU COMES FULLY ASSEMBLED.
REMOVE CONTENTS FROM BOX. VERIFY ALL PARTS ARE PRESENT.
READ INSTRUCTIONS CAREFULLY BEFORE STARTING INSTALLATION.
DO NOT OVER TORQUE. A TORQUE WRENCH IS NOT NECESSARY.
IF PREFERRED, TORQUE IS APX 75 INCH LBS.
30-60 min
Cutting Not
Required
PARTS LIST:
Qty
Part Description
Qty
Part Description
1
Hard Folding Cover (1)
2
Front Mounting Retainer (7)
1
Driver (Left) Mounting Rail (2)
2
Front Mounting Bolts (8)
1
Passenger (Right) Mounting Rail (3)
2
Lock Washers (9)
2
Drain Tubes (4)
2
Flat Washers (10)
6
Clamps (5)
1
Prop Rod (11)
2
Star Knobs (6)
4
Rubber Filler Strips (12)
Tools Required
1. Ratchet & 1/2” Socket
`
Bi-Fold Tonneau Cover
Fits: 2007-2013 TFX1404 - Chevrolet Silverado/GMC Sierra 6.5’
2014-2015 TFX1406 - Chevrolet Silverado/GMC Sierra 5.7’
Drilling Not
Required
Components

INSTALLATION PROCEDURE
For GMC 6.5’ Beds Only - Stick the rubber spacers between the plastic bed rail cap and the bed rail, adjacent to the
front and center clamps. (Identify the location of the spacers by holding the mounting rail up to the bed rail of the
truck and marking the location of the clamps on the truck. Pull out on the plastic bed rail cap and slide the spacer in,
sticking it to the truck bed.)
1. Attach both left and right side rails to the truck bed. The end of the mounting rail with the drain tube fitting will go towards the cab
of the truck, position flush to bulkhead.
2. Position the top edge of the mounting rail flush to 1/8" above the top edge of your truck bed rail. Position the top edge of the
mounting rail flush to 1/8" above the top edge of your truck bed rail. Starting with the center clamp (one of the smaller
clamps) install the rail, but do not tighten completely. Install the other small clamp towards the front of the rail. Install the
larger clamp at the rear of the rail, place the back portion of the clamp into the stake pocket.
3. Tighten the clamps using a 1/2” socket.

5 & 6. Slide the two front mounting bolts into the track on the underside of the tonneau cover.
7. Place the tonneau onto the mounting rails with the smallest panel towards the cab of the truck and with the Front
flap covering the bulkhead.

8. Carefully unfold the cover. Position the cover so it is centered side to side and front to back on the truck bed.
9. Test the rear latching assembly for smooth operation as this is the best indicator of the cover being positioned
correctly. Be sure the latches on both sides are engaging with the cover mounting rail.
Note: If your truck is equipped with a tailgate protector, you may need to slightly raise the rear of the side mounting
ails for the latches to engage properly.
10 & 11. Once the cover is located correctly, fold the cover to the open position. Pull the release cables on the rear
panel to release it from the side rail. Take care to fold it gently so the position of the cover is not disturbed.

12 & 13. Once in the open position place a front retainer clamp, flat washer, lock washer and the star knob on the front
mounting bolt underneath the cover and hand tighten. Be sure the front retainer clamp is clamping to the side rail
correctly. Test the cover again for proper operation; adjust as needed, then tighten the star knobs.
14. Attach the prop rod to the side rail.
15. Attach the drain tubes to the fittings at the front of the bed rail and position the tubes to divert water out of the
truck bed. This can be done by placing the tube behind a bed liner, through an existing hole in the bed, or by
drilling a 5/8” hole in the bulkhead.
Note: If you choose to place the tube behind your bedliner, be sure your drain holes in the bed are not clogged.
Note: If you choose to drill holes, be sure to clean up the metal shavings.

OPERATION INSTRUCTIONS
1 & 2. To open the cover: Lower the tailgate and pull the cable. While pulling on the cable lift the panel up and
towards the cab.
3, 4 & 5. If this is as far as you would like to open the cover, you can secure it in this position. Release the strap
from the stowed position by squeezing the tabs. Attach the buckle at the bulkhead, pull the strap to take up the
slack and secure the cover. Repeat this for the opposite side.
6 & 7. Pull the cable on the second panel and fold the cover up towards the cab.
8 & 9. To easily access items at the front of the bed, simply lift the cover up; unhook the prop rod from the j-clip and
position on the retaining tab. To close simply reverse this process.

1. How difficult is it to install the tonneau cover?
Installing of tonneau cover is easy, please follow the steps in installation manual carefully.
2. How do I clean my tonneau cover?
Wash the tonneau same as your truck. We recommend using soap and water.
3. Will the tonneau cover scratch my paint?
No. Please follow the installation instruction manual carefully to avoid scratching paint.
4. Will the tonneau cover obstruct the opening and closing of my tailgate?
No. The tailgate must be closed before latching the tonneau.
5. Missing / Excess Hardware.
Recheck hardware count as per the part list.
6. Why is my tonneau cover not installing properly?
Ensure year, make, model, cab length and bed size of your vehicle is listed in the application and installation steps are followed correctly.
Failure to follow these care instructions will void warranty:
Clean with soap and water only.
Cover must be secured when vehicle is in motion. See instructions for recommended driving positions.
An unsecured cover can result in damage not covered by this warranty.