400 W. Artesia Blvd. Fax: (310) 747-3912
Compton, CA 90220 Ph: (877) 695-7812
www.trailmastersuspension.com
GM SILVERADO 6-LUG GM 1500 2WD & 4WD
2 1/4” FRONT SPACER KIT
2007– 2013 KIT# TM101 & TM101N
TM101 & TM101N
Revised
7.27.13
WARNING
Installation of a Trail Master suspension lift kit will
change the vehicle’s center of gravity and handling characteristics both on- and off-road. You must drive the vehicle safely! Extreme care must be taken to prevent vehicle rollover or loss of control, which could result in serious injury or death. Avoid sudden sharp turns or abrupt
maneuvers and always make sure all vehicle occupants
have their seat belts fastened.
WARNING
Before you install this kit, read and understand all instructions, warnings, cautions, and notes in this instruction sheet and in the vehicle owner’s manual.
CAUTION
Proper installation of this kit requires knowledge of the
factory recommended procedures for removal and installation of original equipment components. We recommend
that the factory shop manual and any special tools
needed to service your vehicle be on hand during the
installation. Installation of this kit without proper knowledge of the factory recommended procedures may affect
the performance of these components and the safety of
the vehicle. We strongly recommend that a certified mechanic familiar with the installation of similar components
install this kit.
WARNING
This kit should only be installed on a vehicle that is in
good working condition. Before you install the kit, thoroughly inspect the vehicle for corrosion or deformation of
the sheet metal. If the vehicle is suspected to have been
in a collision or misused, do not install this kit. Off-road
use of your vehicle with this kit installed may increase
the stress applied to the factory components. Failure to
observe this warning may result in serious personal injury and/or severe damage to your vehicle.
WARNING
Many states and municipalities have laws restricting
bumper heights and vehicle lifts. Consult state and local
laws to determine if the changes you intend to make to
the vehicle comply with the law.
WARNING
The installation of larger tires may reduce the effectiveness of the braking system.
WARNING
Always wear eye protection when operating power tools.
WARNING
Before you install this kit, block the vehicle tires to prevent the vehicle from rolling.
WARNING
DO NOT combine suspension, body, or other lift devices.
Use of vehicle with combined lifts may result in unsafe
and/or unexpected handling characteristics.
NOTE
Lift height may vary depending on vehicle configuration,
engine size, additional accessories, the factory suspension package, and vehicle’s condition.
NOTE
Trail Master recommends using thread locking compound on the threads of all kit nuts and bolts unless
specified otherwise in these instructions.
TM101 & TM101N
Revised
7.27.13
TM101 & TM101N
Revised
7.27.13
Before Starting Installation
NOTE
Kit parts are prefaced by the word kit and appear in
bold print.
1. Carefully read all warnings and instructions completely 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 encounter 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.
NOTE
Torque Specifications:
See factory service manual for torque values when
reusing OE fasteners.
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
Adhere to recommendations when replacement fasteners, retainers and keepers are called out in the
factory service manual. When re-assembling the vehicle it is recommended by the vehicle manufacturer
that certain fasteners are replaced in order to maintain proper retention characteristics. This system
may not include all replacement hardware as recommended 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.
Engine Compartment
1. Disconnect both battery cables. Disconnect nega-
tive cable first, then positive cable.
Wheel & Tire Requirements
The factory wheel and tire combination will fit once this
kit is installed.
Install Front
TM101 & TM101N
Revised
7.27.13
Suspension
1. Position your vehicle on a smooth, flat,
hard surface (i.e. concrete or asphalt).
Block the rear tires and set the emergency
brake.
2. Unbolt and remove the skid plate from the
vehicle. Save for reinstallation.
3. Place the vehicle in neutral. Place your
floor jack under the front crossmember
and raise the vehicle. Place jack stands
under the frame rails and lower the frame
onto the stands. Remove the jack and
place the vehicle back in gear, set the
emergency brake, and place blocks both
in front and behind the rear wheels.
4. Disconnect the wheel speed sensor cable
from the retainers on the control arms and
the spindles.
Upper
Ball
Joint
7. Unbolt and remove the sway bar end links
from the vehicle.
Sway
Bar End
Link
5. Unbolt the brake line bracket from the
upper A-arm.
OE Clips
6. Using the proper tool carefully separate
the upper ball joint from the knuckle.
Loosen but DO NOT remove the retaining nut from the upper ball joint.
8. Support the lower control arm with a jack
and unbolt the lower strut mounting bolts
from the lower control arm mount.
Lower
Strut
Mount
9. Unbolt the nuts on the upper strut mounting studs. Carefully remove the strut
from the vehicle.
Upper
Strut
Mount
Nuts
10. Install the upper strut spacer (90-4183m)
onto the OE studs on the strut.
NOTE: Because this kit retains the
use of the OE studs the vehicle can easily be returned to it’s stock form.
Upper
Strut
Spacer
90-4183m
TM101 & TM101N
Revised
7.27.13
14. Install the strut and nut clips over the
spacer and secure the lower strut to the
control arm using the previously removed
OE hardware.
15. Torque the upper and lower strut mounting hardware to manufacturers specifications.
16. Reinstall the spindle to the upper ball joint.
Torque the upper ball joint nut to manufacturers specifications.
NOTE: It may be necessary to pry the
upper control arm down, using a pry bar
inserted into the coil spring, to force the
ball joint stem into the spindle.
17. Reinstall the sway bar end link to the lower
control arm and secure top the sway bar.
Torque according to manufacturers specifications.
18. Reinstall the brake line bracket to the control arm using the previously removed hardware.
12. Install the strut assembly into the strut
tower and secure using the supplied
10mm flange nuts. Leave the bolts hand
tight only at this point.
13. Place a jack the lower control arm with
and raise it up. Install the 3/8” lower strut
mount spacer (90-4265) over the factory
lower shock mount holes.
Lower
Strut
Mount
Spacer
90-4265
19. Reinstall the wheel speed sensor cables into
the factory harnesses.
20. Repeat the steps 5 Through 19 On the remaining side of the vehicle.
21. Install the front tires/wheels and lower the
vehicle onto the ground.
22. Reinstall the OE skid plate to the vehicle
using the previously removed OE hardware.
23. Torque all bolts to factory specifications.
Re-torque all bolts after 500 miles.
IMPORTANT! BE SURE TO
BRING THE VEHICLE IMMEDIATELY
TO A REPUTABLE ALIGNMENT SHOP
TO BE ALIGNED!
TM101 & TM101N
Revised
7.27.13
Fender Modification for clearance of 285/70/R17 Tires mounted on a
17x8 wheel with 4.5” of backspacing.
1. Position truck on a flat surface and lift
vehicle by the frame so that the front
wheels are off the ground using a floor
jack and jack stands or a (2) two post
lift if available.
2. Remove (2) OE screws and (2) plastic
push pin retainers located on the bottom of the front fender rear plastic liner.
3. Using a cut of wheel or another suitable tool, trim the fenders along the cut
line in picture A.
4. Using a plastic or rubber mallet,
CAREFULLY
fender lip back to provide tire clearance. Use the measurement and dotted line in picture B as a guide line for
bending. See Picture B.
NOTE: The dotted line is only to
be used as a guide line and the
fenders may require additional
modification.
IMPORTANT!: Make sure the bottom fender bolt is tight prior to flattening the inside fender to avoid
movement.
IMPORTANT!: Pay close attention to the spacing between the
fenders and the front doors prior to
flattening the inner fender. Make
sure you haven’t reduced this spacing, while flattening out the inner
fender, or the doors will make contact with the fenders when opened.
5. Mask any painted areas of the fender.
Prep the trimmed or modified areas for
paint and using a paint primer, prime
the prepared area and let dry. Undercoat the primed area of the fender. Let
undercoating dry properly before removing the masking and reinstalling
the plastic inner fender liner back onto
the lower portion of the fender using
the previously removed OE hardware.
bend the inside of the
Fender
Lip
Bend fender lip back to the dotted line. Meas-
ured length is from the bottom of the fender.
Disclaimer:
It is the vehicle owner’s sole responsibility to en-
sure that all precautions are taken when performing any body or mechanical work. These instructions are only recommendations and not requirements. This type of work should only be
performed by a licensed professional. Trailmaster assumes no responsibility and/or liability for
any modification to your vehicles inside fender
well/wells.
A
B
Cut
Line
Install Rear
Suspension
1. Block the front tires and raise the rear
of the vehicle. Support the frame with
jack stands forward of the rear springs.
2. Remove the rear wheels.
3. Unbolt the rear shock mounting bolts
on both sides of the vehicle. It may be
necessary that you slightly raise the
axle to unload the shocks for removal.
4. Install the new Trailmaster rear shocks
TM75830W ) to the upper and lower
(
mounting points. Torque shock hardware to manufacturers specifications.
TM101 & TM101N
Revised
7.27.13
5. Check all hardware at this time to ensure that everything is tight. Check for
adequate clearance on all repositioned
brake lines and emergency brake cables. Make sure you check with the
suspension fully extended, and compressed.
6. Reinstall the wheels and lower the vehicle to the ground. Torque the lug
nuts according to the wheel manufacturers recommendations.
7. Torque all bolts to factory specifications. Re-torque all bolts after 500
miles.
TM101 & TM101N
Revised
7.27.13
Engine Compartment
1.Connect both battery cables. Connect positive
cable first, then negative cable.
Miscellaneous
1.Apply kit label (warning) onto dashboard in plain
sight of all vehicle occupants.
2.Adjust headlights.
3.Check all fasteners to ensure they are tight.
4.Ensure all wires, hoses, cables, etc. are properly connected and there is ample slack.
WARNING
If the engine cooling system is hot, the coolant will be
HOT and UNDER PRESSURE. To prevent serious personal injury, wait until the cooling system is completely
cool before removing the cap from the radiator.
5.Start engine and top off cooling system. Purge
air from cooling system according to manufacturer’s instructions. Install radiator cap.
6.Align vehicle
Troubleshooting
1. Once the vehicle has been lifted, some vehicle
vibration may become more apparent to the
driver. The reason for the vibration may be due to
the angle at which the driveline operates. A suspension lift increases the operating angle of the
driveline and normal vehicle vibration is amplified.
Some vibration characteristics are as follows:
a. Acceleration vibration: vibration felt during
acceleration of the vehicle and caused by the
rear axle pinion angle being too high.
b. Deceleration vibration: vibration felt during
deceleration of the vehicle and caused by the
rear axle pinion angle being too low.
c. General vibration: vibration caused by rear pinion angle in relation to the transfer case output
shaft.
Dynamic Vehicle Check
1. Check steering and suspension in all positions
to ensure that there is no bind and adequate
clearance between all moving, fixed, and
heated members. Check operation of clutch,
brake system, and parking brake. Check operation of transmission and transfer case. Ensure there is full engagement in all gears and
4WD ranges. Check battery connections and
electrical component operations. Test-drive
vehicle.
WARNING
Retorque all fasteners after 500 miles and after off road
use. All suspension lift components should be visually
inspected and fasteners retorqued during routine vehicle
servicing.
WARNING
Re-torque all fasteners after 500 miles and after
off road use. All suspension lift components
should be visually inspected and fasteners retorqued during routine vehicle servicing.
Caution:
Larger wheel and tire combinations increase
stress and wear on steering and suspension
components, which leads to increased maintenance and higher risk for component failure. Larger wheel and tire combinations also alter speedometer calibration, braking effectiveness, center
of gravity, and handling characteristics. Consult
an experienced local off road shop to find what
wheel and tire combinations work best with your
vehicle.
Parts List:
KIT TM101
BOX TM101 1
90-4183m UPPER STRUT SPACER 2
90-6638m HARDWARE PACK 1
10MM - 1.5 10.9 METRIC FLANGE NUTS 6
90-4265 LOWER STRUT MOUNT SPACER 2
KIT TM101N
BOX TM101 1
90-4183m UPPER STRUT SPACER 2
90-6638m HARDWARE PACK 1
10MM - 1.5 10.9 METRIC FLANGE NUTS 6
90-4265 LOWER STRUT MOUNT SPACER 2
TM75830W REAR SHOCKS 2
TM101 & TM101N
Revised
7.27.13
TM101 & TM101N
Revised
7.27.13
TM101 & TM101N
Revised
7.27.13
Notice to Owner Operator, Dealer and Installer:
Vehicles that have been enhanced for off-road performance often have unique handling characteristics
due to the higher center of gravity and larger tires. This vehicle may handle, react and stop differently than
many passenger cars or unmodified vehicles, both on and off–road. You must drive your vehicle safely!
Extreme care should always be taken to prevent vehicle rollover or loss of control, which can result in serious injury or even death. Always avoid sudden sharp turns or abrupt maneuvers and allow more time and
distance for braking! Trail Master Suspension
reminds you to fasten your seat belts at all times and reduce speed! We will gladly answer any questions concerning the design, function, maintenance and correct use of our products.
Please make sure your Dealer/Installer explains and delivers all warning notices, warranty forms
and instruction sheets included with Trail Master Suspension
product.
Application listings in this catalog have been carefully fit checked for each model and year denoted. However, Trail Master Suspension
reserves the right to update as necessary, without notice, and will not be
held responsible for misprints, changes or variations made by vehicle manufacturers. Please call when in
question regarding new model year, vehicles not listed by specific body or chassis styles or vehicles not
originally distributed in the USA.
Please note that certain mechanical aspects of any suspension lift product may accelerate ordinary wear of original equipment components. Further, installation of certain Trail Master Suspension
products may void the vehicle’s factory warranty as it pertains to certain covered parts; it is the consumer’s responsibility to check with their local dealer for warranty coverage before installation of the lift.
Warranty and Return policy:
Trail Master Suspension
materials. Trail Master Suspension’s
Trail Master Suspension’s
warranties its full line of products to be free from defects in workmanship and
obligation under this warranty is limited to repair or replacement, at
option, of the defective product. Any and all costs of removal, installation,
freight or incidental or consequential damages are expressly excluded from this warranty. Trail Master
Suspension is not responsible for damages and / or warranty of other vehicle parts related or non-related
to the installation of Trail Master Suspension
product. A consumer who makes the decision to modify his
vehicle with aftermarket components of any kind will assume all risk and responsibility for potential damages incurred as a result of their chosen modifications. Warranty coverage does not include consumer
opinions regarding ride comfort, fitment and design. Warranty claims can be made directly with Trail Mas-
ter Suspension or at any factory authorized Trail Master Suspension dealer.
IMPORTANT! To validate the warranty on this purchase please be sure to mail in the warranty card.
Claims not covered under warranty-
• Parts subject to normal wear; this includes bushings, bump stops, ball joints, tie rod ends and heim joints
• Discontinued products at Trail Master Suspension’s
discretion
• Bent or dented product
• Finish after 90 days
• Leaf or coil springs used without proper bump stops
• Products with evident damage caused by abrasion or contact with other items
• Damage caused as a result of not following recommendations or requirements called out in the installation manuals
• Products used in applications other than listed in Trail Master Suspension’s
catalog
• Components or accessories used in conjunction with other manufacturer’s systems
• Warranty claims without “Proof of Purchase”
• Trail Master Suspension
accepts no responsibility for any altered product, improper installation, lack of
or improper maintenance, or improper use of our products.
E-Mail: info@trailmastersuspension.com
Website: www.trailmastersuspension.com
Ph: (877) 695-7812
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