Trail Master Suspension TM103N CHEVEROLET SILVERADO 4WD/2WD 6 SUSPENSION LIFT KIT - Manual (Page 3)

3
TM103N
Revised
1.28.14
Before Starting Installation
1. Carefully read all warnings and instructions com-
pletely before beginning.
2. Verify all parts have been received in this kit by
checking the parts list at the end of this document.
3. Only install this kit on the vehicle for which it is
specified. If anytime during the installation you en-
counter something different from what is outlined in
the instructions, call technical support at (877) 695-
7812.
4. Park vehicle on a clean, dry, flat, level surface and
block tires so vehicle cannot roll in either direction.
5. Measure ride height with the vehicle supporting its
own weight on level ground. To settle the suspension,
the vehicle should be driven forward at least 10 feet
immediately prior to taking these measurements. Ride
height is the measurement from the center of the axle
straight up (vertical) to the fender lip. Record this
measurement for all four wheels.
Engine Compartment
1. Disconnect both battery cables. Disconnect
negative cable first, then positive cable.
Wheel & Tire Requirements
The factory wheel and tire combination will not fit
once this kit is installed.
Torque Specifications:
See factory service manual for torque values
when reusing OE fasteners.
NOTE
Kit parts are prefaced by the word kit and appear in
bold print.
NOTE
Adhere to recommendations when replacement fas-
teners, retainers and keepers are called out in the
factory service manual. When re-assembling the ve-
hicle it is recommended by the vehicle manufacturer
that certain fasteners are replaced in order to main-
tain proper retention characteristics. This system
may not include all replacement hardware as recom-
mended by the factory service manual. Additional
replacement hardware should be obtained prior to
installation of this system to meet the requirements
of the factory service manual.
See factory service manual for torque values when re-using
OE fasteners.
Bolt Size Grade 5 (ft.-lbs.) Grade 8 (ft.-lbs.)
1/4”-20 10 10
1/4”-28 10 12.5
5/16”-18 17 22.5
5/16”-24 20 25
3/8”-16 30 40
3/8”-24 35 45
7/16”-14 50 65
7/16”-20 55 70
1/2”-13 75 100
1/2”-20 80 115
9/16”-12 105 135
9/16”-18 115 150
5/8”-11 150 195
5/8”-18 160 210
3/4”-16 175 225
Tire & Wheel Information:
Due to differences in manufacturing, dimensions and
inflated measurements, tire and wheel combinations
should be test fit prior to installation. Tire and
wheel choice is crucial in assuring proper fit, per-
formance, and the safety of your Trail Master
equipped vehicle. For this application, we recom-
mend a 17” or larger wheel not to exceed 8” in width
with a maximum backspacing of 4.5” must be used.
Additionally, a quality tire of radial design, not ex-
ceeding 35” tall X 12.5” wide is also recommended.
Please note that the use of a 35” X 12.5” tire may re-
quire modification to the front valance. Violation of
these recommendations will not be endorsed as ac-
ceptable by Trail Master Suspension and will void
any and all warranties either written or implied.
NOTE
On some vehicles the driver’s side OE chassis wire
harness that connects to the ABS wire may be shorter,
from the factory, than others. If the line needs to be ex-
tended GM #19149296 (ACD#PT2232) can be installed
into the chassis wire harness.