Tuff Country 13085 - GM 11-13 Silverado 2500HD 3.5 lift kit - Manual (Page 5)

11. Working on the driver side, place a hydraulic floor jack
under the driver side lower control arm and carefully raise up
until the hydraulic floor jack comes into contact with the
lower control arm. Special note: Using a tie down strap to
hold the lower control arm in place so that the lower
control arm does not drop and damage the CV axle is
another option. Repeat procedure on the passenger side.
12. Working on the driver side, remove the hardware attach-
ing the upper control arm to the knuckle. The hardware may
be discarded. Repeat procedure on the passenger side.
13. Working on the driver side, separate the upper control
arm from the knuckle. Special note: using a hammer and
striking the knuckle will help break the taper. Repeat pro-
cedure on the passenger side.
14. Working on the driver side, remove the hardware attach-
ing the upper control arm into the OE location. Save the
hardware. The upper control arm maybe discarded. Repeat
procedure on the passenger side.