Tuff Country 13090 - GM 11-13 Silverado 3500HD 3.5 lift kit - Manual (Page 7)

19. Working on the driver side, install the newly installed
upper control arm to the knuckle and secure using the ball
joint castle nut and washer. Special note: Do not forget to
install the new harden washer before the castle nut is
installed. If this washer is not installed, the new upper
control arm ball joint will not seat properly and damage
will occur. Torque the castle nut to 70 ft lbs. Install the new
cotter pin to the ball joint. Special note: If you are not able
to install the cotter pin because the hole in the ball joint
does not line up with the castle nut DO NOT loosen the
castle nut but tighten it until the cotter pin can be
installed. Repeat procedure on the passenger side.
20. Carefully remove the hydraulic floor jacks from under the
lower control arm. If you used tie down straps, remove the tie
down straps at this time.
21. Locate the OE shocks. Carefully remove the upper
pressed in bolts from the shock. The pressed in bolts may be
discarded.
22. Locate (4) 1/2” x 3” bolts, (4) 7/16” USS flat washers and
(4) 1/2” unitorque nuts from hardware bag 13085NB. Also,
locate the new front shock relocation blocks. Working on the
driver side, install the new 1/2” bolts and front shock reloca-
tion block to the OE shock and install into the upper shock
location using the 1/2” hardware. Do not tighten at this
point. Repeat procedure on the passenger side.
23. Working on the driver side, install the lower mounting
point on the shock to the lower control arm and secure using
the OE hardware. Make sure to use loctite and torque to 85
ft lbs. Repeat procedure on the passenger side.