Rough Country 289 User Manual

9228900

2002-2007 CHEVROLET TRAILBLAZER & GMC

ENVOY 2” FR & 3/4” RR KIT

Thank you for choosing Rough Country for your suspension needs.

Rough Country recommends a certified technician install this system. In addition to these instructions, professional

knowledge of disassemble/reassembly procedures as well as post installation checks must be known. Attempts to install

this system without this knowledge and expertise may jeopardize the integrity and/or operating safety of the vehicle.

PRODUCT USE INFORMATION

As a general rule, the taller a vehicle is, the easier it will roll. Offset, as much as possible, what is lost in rollover
resistance by increasing tire track width. In other words, go "wide" as you go "tall".

Do not add, alter, or fabricate any factory or after-market parts to increase vehicle height over the intended height of the
Rough Country product purchased. Mixing component brands or lifts voids all warranties. Rou gh Country makes no
claims regarding lifting devices and excludes any and all implied claims. We will not be responsible for any product that
is altered. Braking performance and capability are decreased when significantly larger/heavier tires a nd wheels are used.
Take this into consideration while driving.

The required installation time for this system is approximately 2 hours. This suspension system was developed using a
30” X 9.50 or equivalent tire on an 16” wheel. Before installing other combinations, please consult your local tire and
wheel specialist.

If questions exist on the design, function, and correct use of our products please contact us at 800-222 -7 023.

NOTICE TO DEALER AND VEHICLE OWNER

Any vehicle equipped with any Rough Country product should have a “Warning to Driver” decal installed on the inside of
the windshield or on the vehicle’s dash. The decal should act as a constant reminder for whoever is operating the
vehicle of its unique handling characteristics.

Recommended Tools:

9/16” Socket / Wrench
15mm Socket / Wrench
18mm Socket / Wrench
19mm Socket / Wrench

24mm Socket

2-Front Strut Spacers
2-Rear 3/4” Spacers
1-Poly Bag Containing:
4-3/8” Self Clinching Studs
4-3/8” Nuts

Parts List:

4-3/8” Lock Washers
4-Cup Washers
4-Stem Bushings

INSTALLATION INSTRUCTIONS

1. Chock the rear wheels and jack up the front of the vehicle. Support with jack stands.

2. Remove the wheels using a 19mm socket.

3. Remove the lower strut nut using a 24mm socket as shown in Photo 1.

4. Remove the upper strut nuts using a 18mm wrench. See Photo 2.

Photo 2 Photo 1

5. Remove the strut from the vehicle.

6. Mark the stud location on the spring for reference.

7. Compress the spring using a strut compressor tool.

8. After the pressure has been relieved from the coil spring, remove the upper strut nut using a 15mm wrench. NOTE:

Do not attempt to remove the upper strut nut without relieving the pressure on the coil spring. The coil has
enormous pressure and can cause bodily harm or damage if not relieved before removing the upper nut.

9. Remove the upper stock strut hat, stock stud bushings and stud washers.

10. Install the Rough Country strut spacer on the stock strut with the supplied stem bushings and cup washers. See
Photo 3.

11. Install the supplied stem bushing and cup washer and reinstall the stock nut on the strut and tighten using a 15mm
wrench. See Photo 4.

Photo 3 Photo 4

12. Install the supplied self clinching 3/8” studs in the new
Rough Country spacer with the supplied 3/8” nuts using
a 9/16” socket and torque wrench. The studs will cinch at
approx 30-45 ft/lbs or torque. DO NOT over torque the
studs.

13. Reinstall the strut assembly on the vehicle and tighten
the supplied 3/8” nut using a 9/16” wrench. See Photo 5.

14. Reinstall the lower strut mount on the lower control arm
with the factory hardware using a 24mm wrench. Torque
to factory specifications.

15. Reinstall the tires and wheels. Tighten using a 19mm
socket.

16. Jack up the front of the vehicle, remove the jack stands
and lower the vehicle to the ground.

Photo 5