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559-734-7451 800-367-5480 FAX 559-734-7460
INSTALLATION INSTRUCTIONS
Rear Stabilizer Bar 7717
2011+ GM 2500HD-3500HD 2WD-4WD
Duramax Diesel Only
Thank you for purchasing a quality Hellwig Product.
PLEASE READ THIS INSTRUCTIONSHEET COMPLETELY BEFORE STARTING YOUR INSTALLATION
TORQUE TABLE
Bolt Size 3/8”— 35 ft lbs * Bolt Size 7/16”— 45 ft lbs* Bolt Size 1/2”—75 ft lbs *Bolt Size 9/16”— 90 ft lbs
SAFETY: BEFORE BEGINNING INSTALLATION BE SURE TO SET THE PARKING BRAKE
AND CHOCK THE WHEELS.
NOTE: TO EASE INSTALLATION AND PROPERLYADJUST THE BAR, THE WEIGHT OF THE
VEHICLE MUST BE ON THE SUSPENSION AS IF DRIVING DOWN THE ROAD. DO NOT RAISE
THE VEHICLE BY THE FRAME.
NOTE: THIS UNIT IS DESIGNED TO MOUNT TO THE BOTTOM OF THE AXLE TUBES WITH
THE ARMS OF THE BAR TOWARD THE REAR OF THE VEHICLE.
7717 (R-7717) 05/26/2011
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559-734-7451 800-367-5480 FAX 559-734-7460
Insert threaded plate with pigtail
through this hole
Align this hole on threaded plate
with this hole in frame rail and
attach clevis as shown.
1 2
Passenger Side
End LinkAssembly
Bushing
Sleeve
9/16-18 Nut
Threaded plate will be
inserted into large hole
in framerail to attach
clevis to rail.
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Sleeve
Bushing
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Driver’s Side
Driver Side
559-734-7451 800-367-5480 FAX 559-734-7460
1. Locate large slotted hole in side of frame rails approximately
12 forward of the bump stops as shown in photo 1.
2. Insert threaded plate into large slotted hole and use wire pigtail to orient threaded plate to slotted hole on bottom of frame
Plastic fuel tank
shield can be removed to provide
additional clearance for installation of sway bar
and end link.
REINSTALL
SHIELD AFTER INSTALLATION IS
COMPLETE.
rail.
3. Attach clevis to threaded plate with 1/2 X 1-1/4” bolt as
shown in photo 2. Align clevis to be square with the frame
rail and torque bolts to 50 ft-lb.
4. Assemble end links as shown in photos 2&3 by inserting the
hourglass bushing first and then the sleeve into the loops of
the end links. Lubricate the bushing and sleeve before as-
sembly. Attach 9/16 nut to threaded half of end link before
assembling end link halves.
5. Attach end links to clevis on frame brackets using 7/16 X 21/4 bolts and locknuts. LEAVELOOSE for adjustment
later. On driver side the plastic fuel tank shield can be loosened to provide additional clearance for assembly. Reinstall
shield after installation is complete.
6. Place U-bolts on axle as shown in photos 4&5. Be sure to
put the U-Bolts Under Any Brake Lines, Wires or Hoses
on the Axle to Avoid Any Possible Damage. The threads of
the U-Bolts will point down.
Driver Side
Passenger Side
Spacer Plate
Spacer Plate
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Attach end links
to forward
mounting hole.
Saddle
Spacer
U-plate
6
7. Lubricate and install polyurethane D-bushings and U-plates on the sway bar in the locations shown in photos 4&5.
8. Orient sway bar with arms angling upward as shown in photo 6. Attach ends of sway bar
to end links with 7/16 x 2-3/4” bolts as shown in photo 6. Leave loose for adjustment
later. Attaching sway bar to end links first will allow the sway bar to be rotated into position to ease installation.
9. Insert legs of U-bolts into saddle brackets and spacer plates and rotate sway bar upwards
to attach the u-plates with the U-bolts. Attach sway bar assembly to axle with 1/2” locknuts and washers.
10. Center sway bar on axle and tighten axle U-bolts to 60 ft-lb.
11. Adjust end links so that sway bar is oriented as shown in photos 6&7. The center hump
will be even with the bottom of the differential housing as shown in photo 7.
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559-734-7451 800-367-5480 FAX 559-734-7460
12. After all adjustments have been made, tighten end link mounting bolts to 35-40 ft-lb and 9/16” adjustment nut on end links to 70 ft-lb.
13. Bounce the vehicle checking for clearance on all under carriage components: fuel tank, shocks,
exhaust, differential, brake and fuel lines, etc. Test drive the vehicle and recheck all clearances
and the installation alignment. Adjust as needed. Re-check your installation after one week of
driving and periodically on a regular basis.
14. The sway bar has three end link mounting holes. The end link MUST be mounted on the
outer hole for initial use. For a firmer setting, use the inner holes. You must use the outer
mounting hole until you are accustomed to the vehicles new handling characteristics. After
driving vehicle, a firmer setting may be selected if desired. It is recommended that the outer
hole be used for street driving.
ATTENTION INSTALLER: PLEASE MAKE SURE CUSTOMER RECEIVES THIS INSTRUCTION
SHEET,ALL IMPORTANT NOTE CARDS, WARNING CARDS
AND THE WARRANTY FORM
7717 (R-7717) 05/26/2011
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