Tuff Country 12000 - GM 07-11 2 leveling kit - Manual (Page 3)

Please follow instructions carefully:
Before installation begins, measure from the center of
the hub, to the bottom of the fender well, and record
measurements below.
Pre-installation measurements:
Driver side front:_______________________________
Passenger side front:___________________________
At the end of the installation take the same
measurements and compare to the pre-installation
measurements.
Post installation measurements:
Driver side front:______________________________
Passenger side front:__________________________
Front end installation:
1. To begin installation, block the rear tires of the vehicle so
that the vehicle is stable and can’t roll backwards. Safely lift
the front of the vehicle and support the frame with a pair of
jack stands. Place a jack stand on both the driver and the
passenger side. Next, remove the front wheels and tires
from both sides.
2. Working on the driver side, loosen but do not remove the
nut that connects the outer tie rod to the knuckle. Carefully
break the taper from the outer tie rod and the knuckle.
Once the taper has been broken, remove the nut and set
aside. Special note: Take special care not to damage
the outer tie rod or the dust boot. A helpful tip is to hit
the knuckle with a hammer to break the taper. Repeat
procedure on the passenger side.
3. Working on the driver side, loosen but do not remove the
nut that connects the upper control arm ball joint to the
knuckle. Carefully break the taper from the upper control
arm ball joint and the knuckle. Once the taper has been
broken, remove the nut and set aside. Special note: Take
special care not to damage the upper control arm ball
joint or the dust boot. A helpful tip is to hit the knuckle
with a hammer to break the taper. Repeat procedure on
the passenger side.
4. Working on the driver side, remove the hardware that
connects the strut to the lower control arm. Save the hard-
ware for later re-installation. Repeat procedure on the pas-
senger side.
5. Working on the driver side, remove the (3) nuts that hold
the strut into the upper location. The nuts may be discard-
ed. Remove the strut from the vehicle and set aside.
Repeat procedure on the passenger side. Special note:
Make sure to mark the driver side and passenger side
strut before removal. This is done so that when you re-
install the modified struts back into the vehicle you will
install the driver side strut on the passenger side of the
vehicle and install the passenger side strut on the driv-
er side.
6. Locate (6) new 10 mm flange nuts from hardware bag
12000NB. Install the new 10 mm flange nuts on the studs
of the struts. Make sure to tighten the nuts all the way down
on the strut. Measure each stud to 7/8” and cut off the
excess thread using a die grinder. Once all (6) studs have
been cut to 7/8” remove the new 10 mm flange nuts from
the studs and set aside for later re-installation. Special
note: You must install the 10 mm flange nuts before
you cut the excess threads off. Then when you remove
the new 10 mm flange nuts, it will clean the thread so
you can install the new front spacer.