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1. Remove the plastic bezel that surrounds your tailgate
handle. Use the tips of your fingers at the top of the bezel and then the bottom
to pull it off.
2. Release lock rods at handle assembly by unlatching plastic
retainers.
3. Remove the 3 screws on the back side of the tailgate with
a Torx 40 socket.
4. Extract the handle from the tailgate.
5. Insert the short harness with the 2 bullet plugs into the
drain hole at the bottom of the tailgate. The end with the waterproof connector
should run behind the bumper and under the truck. Push the harness with the
2 bullet plugs into the tailgate until it can be pulled through to the handle
opening.
6. Using an appropriate work surface, set the factory handle
on top of the DynoLock bracket, align the 3 holes and insert at least 2 of the
bolts. Now move the actuator piston to see if the Dynolock pin moves freely
under the lip of the handle. You will have to hold the lip up. The lock rods
will hold it up when installed. If everything lines up OK, remove the bolts
and prepare to insert the lock and handle back into the tailgate.
7. The DynoLock and handle will have to be inserted back into
the tailgate at the same time. Ultimately, the DynoLock bracket will be sandwiched
between the factory handle and the back skin of the tailgate. Our suggestion
is to slide both pieces in together and the get on bolt threaded through the
hole into the factory bracket. Then line up the rest of the holes, insert the
remaining two bolts and tighten.
8. Make sure the DynoLock locking pin moves back
and forth freely. Connect wires from harness to DynoLock
9. Reconnect the threaded lock rods by snapping retainer into
place.
10. Connect the long harness to the short harness installed
in the tailgate by pressing the 2-pin waterproof connector together.
11. Run the harness under the vehicle as close to the driver's
side kick panel as possible. Use the tie wrap to secure the harness to
the frame. Be sure to avoid moving or hot parts under the vehicle, i.e. shocks,
springs or muffler pipes.
13. It is necessary to remove the driver door panel and attach the two wires from the Dyno Electric Lock directly to the wires at the door lock solenoid.
14. First remove the drivers side kick panel and fish the two wires thru the boot between the door jam and the door. See page marked 2003 Silverado & up driver door panel removal for more information on how to do it.
15. The GM locking mechanism is totally new. After you remove the door panel, pull the clear plastic back at the bottom of the door and you will find the gray and tan wires at the bottom left-side. You can use a 12 volt test light to make sure you have the proper wires. See how to use a test light instruction sheet.
16. Attach our White wire to the factory GRAY. Attach our Black wire to the factory TAN. If the doors lock and the tailgate unlocks, reverse the wires. Replace all panels, the installation is complete.
