Does this help????
The tailgate sticks when you pull the upper handle to
open the tailgate in drop mode.
PROBABLE CAUSE
The left body-side striker/hinge is out of adjustment.
CORRECTIVE ACTION
Adjust the left body-side striker/hinge.
REPAIR PROCEDURE
1. Open the tailgate with the upper handle (drop
mode).
2. Using a Torx T-50 bit and ratchet, remove the bolt
that holds the tailgate support cable to the tailgate.
Place the cable end out of the way inside the bed
area.
NOTE: With the support cable disconnected, the
tailgate is not supported in drop mode.
3. Hold the tailgate up. Using a Torx T-50 bit and
ratchet, loosen one of the left body-side striker/
hinge bolts, then retighten it finger-tight. Repeat
this again for the other two bolts, one at a time.
4. While holding the upper handle in the open
position, close and open the tailgate hard three
times.
5. Close and latch the tailgate, then reopen it, noting if
the tailgate sticks:
• If the sticking is reduced or eliminated, go to
step 6.
• If the sticking has not improved, repeat steps 3
and 4 with the bolts slightly loosened.
6. Starting with the middle bolt, torque the three striker
bolts to 40 N.m (30 lb-ft).
7. Reinstall the support cable and bolt, and torque the
bolt to 30 N.m (22 lb-ft).
8. Recheck the tailgate drop mode operation.