Tuff Country 14059 - GM 2014 Silverado 1500 4wd 4 lift kit - Manual (Page 7)

18. Working on the driver side, place a hydraulic floor jack
under the lower control arm. Repeat procedure on the pas-
senger side.
19. Working on the driver side, loosen but do not remove the
nut holding the upper control arm ball joint to the knuckle.
Special note: Using a hammer and striking the knuckle
will help break the taper. Once the taper has been broke,
remove the nut and upper control arm from the knuckle. The
hardware may be discarded. Repeat procedure on the pas-
senger side.
20. Working on the driver side, remove the upper control arm
from the upper control arm location. The upper control arm
may be discarded but save the upper control arm hardware.
Repeat procedure on the passenger side.