Installation Guide

TOOLS REQUIRED
15/16” SOCKET
15/16” WRENCH
3/4” SOCKET
3/4” WRENCH
21MM SOCKET
TORQUE WRENCH
TOOLS REQUIRED
15/16” SOCKET
15/16” WRENCH
3/4” SOCKET
3/4” WRENCH
21MM SOCKET
TORQUE WRENCH
5/8” BOLT
1/4” BOLT PLATE
3/8” SPACER
5/8” LOCK WASHER
5/8” NUT
1/2” BOLT
1/2” NUT
1/2” LOCK WASHER
3/8” SPACER
EXISTING FACTORY
FLANGE BOLT
5/8” BOLT
1/4” BOLT PLATE
3/8” SPACER
5/8” LOCK WASHER
5/8” NUT
1/2” BOLT
1/2” NUT
1/2” LOCK WASHER
3/8” SPACER
EXISTING FACTORY
14MM FLANGE BOLT
FRONT
REAR
FRONT
REAR
1999-2006 CHEVY SILVERADO & GMC SIERRA, 2007 CLASSIC
(LONG BEDS):
1. Remove the 14mm bolt from the bottom of the frame with a
21mm socket.
2. Bolt the brackets on with the 14mm bolt that was just removed
and a 3/8” thick spacer into the hole shown. Insert a 5/8” bolt
with a 1/4" bolt plate through the large hole in the frame and
into the bracket as shown. Install 3/8” thick spacers, 5/8” lock
washers and nuts on the bolts. Leave the bolts loose.
3. Install the center section between the brackets as shown.
Use the bolting location indicated. Install 1/2” bolts through the
center section and the bracket as shown. Install 1/2” lock
washers and nuts on the bolts. NOTE: Be sure to use four
holes to bolt the brackets to the center section.
4. Tighten the nuts in the following order:
First torque the 1/2" nuts to 70 ft•lb.
Then torque the5/8" nuts to 115 ft•lb, and the 14mm bolts to 85 ft-lb.
1999-2005 CHEVY SILVERADO & GMC SIERRA, 2007 CLASSIC
(SHORT BEDS):
1. Remove the 14mm bolt from the bottom of the frame with a
21mm socket.
2. Bolt the brackets on with the 14mm bolt that was just removed
and a 3/8” thick spacer into the hole shown. Insert a 5/8” bolt
with a 1/4" bolt plate through the large hole in the frame and
into the bracket as shown. Install 3/8” thick spacers, 5/8” lock
washers and nuts on the bolts. Leave the bolts loose.
3. Install the center section between the brackets as shown. Use
the bolting location indicated. Install 1/2" bolts through the
center section and the bracket as shown. Install 1/2” lock
washers and nuts on the bolts. NOTE: Be sure to use four
holes to bolt the brackets to the center section.
4. Tighten the nuts in the following order:
First torque the 1/2" nuts to 70 ft•lb.
Then torque the5/8" nuts to 115 ft•lb, and the 14mm bolts to 85 ft-lb.
4