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INSTALLATION INSTRUCTIONS
Rear Stabilizer Bar 7267
2007 –2010 GM 2500HD-3500HD 2WD-4WD
Duramax Diesel Only
Thank you for purchasing a quality Hellwig Product.
Remove Driver’s side
shock bolt and re-install
with bolt head outboard
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.
Relocate brake cable/
line with z-bracket.
1. Lubricate the D shaped bushings and place them on the straight areas of the bar on each side of
the center hump.
2. Hold bar up to the axle and locate the position on the axle tubes to mount the u-bolts. 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.
3. The saddle brackets have different radiuses to match the taper of the axle. Install saddles on axle
so that they sit squarely on the axle. Place the U-Plates over the D shaped bushings on the bar
and attach the bar to the U-Bolts and saddle brackets with the flat washers and nuts provided.
LEAVE LOOSE AT THIS TIME to allow for adjustment later.
4. Remove brake cable/line bracket from axle and use z-bracket and 5/16 bolt and nut to relocate as
shown in photos. Remove the driver side lower shock bolt, turn it around and reinstall from
the outboard side of the lower shock bracket.
7267 (R-7267) 11/19/2010
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559-734-7451 800-367-5480 FAX 559-734-7460
Loosen three bolts to remove
trailer controller for U-bolt installation. DO NOT UNPLUG CONTROLLER FROM HARNESS.
Remove Driver’s side
shock bolt and re-install
with bolt head outboard
Clevis is installed
on RH side of
bracket on driver
side and pass side
rails.
END LINK MUSTBE
ATTACHED TO
REAR –MOST HOLE
PRIOR TO INITIAL
USE.
Driver Side
5. Locate existing spare tire crossmember on vehicle frame.
Place square U-bolt over the frame rail in front of the
crossmember with the legs of the U-bolt pointing downward. If equipped with trailer brake controller, loosen the 3
bolts attaching controller to frame rail and slide controller
off slots in rail (see photo) - DO NOT DISCONNECT
CONTROLLER FROM HARNESS. This will allow
the drivers side U-bolt to be installed on frame rail.
6. Reattach trailer brake controller to frame rail if required.
7. Insert the legs of the U-bolts into the slotted holes of the
frame brackets. Using 1/2” locknuts and washers, install
the frame bracket with the clevis on the RH side of the
bracket as shown in photos. The large hole in the bracket
must be centered over the frame rivet. LEAVE LOOSE
for adjustment later.
8. Insert hourglass bushing first and then the sleeve into the
loops of the end links. Lubricate the bushing and sleeve
before assembly. Attach 9/16 nut to threaded half of end
link before assembling end link halves.
9. Attach end links to clevis on frame brackets using 7/16 X
2-1/4 bolts and locknuts. LEAVE LOOSE for adjustment later.
7267 (R-7267) 11/19/2010
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559-734-7451 800-367-5480 FAX 559-734-7460
Driver’s Side
Center hole in frame
bracket must be placed
over frame rivet.
Passenger Side Passenger Side
10. Adjust end links so that the arms of the sway bar are parallel with the ground. When satisfied with fit, attach
end links to the rearmost hole of sway bar with 7/16 x 2-3/4 bolts, washers, and locknuts. A washer can be
placed between the sway bar and end link bushing to aid alignment of the end links.
11. Tighten end link bolts on sway bar and frame brackets to 40 ft-lb. Tighten 9/16” nut on end links to lock
threads in place.
12. Center sway bar on axle and tighten axle U-bolts to 60 ft-lb. Double nut axle u-bolts after torquing to spec.
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
7267 (R-7267) 11/19/2010
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