1
Passenger Side Bar
6
10-1.50mm x 30mm Hex Head Bolts
1
Driver Side Bar
4
10mm Hex Nuts
1
Passenger Side Front Mounting Bracket
6
10mm Lock Washers
1
Driver Side Front Mounting Bracket
10
10mm ID x 20mm OD x 1.5mm Flat Washers
1
Passenger Side Center Mounting Bracket
2
10mm Nut Plates
1
Driver Side Center Mounting Bracket
12
8-1.25mm x 20mm Hex Head Bolts
1
Passenger Side Rear Mounting Bracket
12
8mm Lock Washers
1
Driver Side Rear Mounting Bracket
12
8mm ID x 22mm OD x 1.5mm Flat Washers
1
Passenger Side Front Support Bracket
2
12-1.75mm x 30mm Hex Head Bolts
1
Driver Side Front Support Bracket
2
12mm Hex Nuts
2
Center Support Brackets
4
12mm ID x 29mm x 3mm Flat Washers
2
12mm Lock Washers
INSTALLATION INSTRUCTIONS
4” OVAL STRAIGHT SIDE BAR
99-09 1500-2500-3500 SILVERADO/SIERRA EXT CAB
PART NUMBER
Passenger Side
Center Bracket
Passenger Side
Rear Bracket
Passenger Side
Front Bracket
Driver Side
Rear Bracket
Driver Side
Center Bracket
Driver Side
Front Bracket
Driver Side
Front Support Bracket
Passenger Side
Front Support Bracket
Center Support Brackets
10mm Nut Plates
PARTS LIST:
Page 1 of 5 2/9/09 Rev B (DP)
PROCEDURE:
1. REMOVE CONTENTS FROM BOX. VERIFY ALL PARTS ARE PRESENT. READ INSTRUCTIONS
CAREFULLY BEFORE STARTING INSTALLATION.
2. From underside of vehicle remove front, center, and rear body mount bolts. Do not remove bushings.
3. Hang driver side front, center and rear Mounting Brackets into position by partially threading factory
body mounting bolts back into body mounts (Figure 1).
4. Locate the two factory holes in the bottom of the frame towards the front of the vehicle. Insert (1) Nut
Plate trough oval hole and orient Nut Plate towards the front round hole (Figure 2).
5. Attach driver side front Support Bracket to already inserted Nut Plate by partially threading (1) 10mm x
30mm Hex Head Bolt, (1) 10mm Lock washer, and (1) 10mm Flat Washer (Figure 3 & 4).
1500 Models:
Attach opposite side of driver side front Support Bracket to outside hole in the Mounting Bracket using
the included (1) 10mm x 30mm Hex Head Bolt, (1) 10mm Hex Nut, (1) 10mm Lock Washer, and (2)
10mm Flat Washers (Figure 3). Do not tighten at this time.
2500 Models:
Note that the Support Bracket will not reach the Mounting Bracket (Figure 3). Tighten the Support
Bracket to Nut Plate in the frame. Carefully push up on the Support Bracket until it reaches the inside
hole in the Mounting Bracket (Figure 5). Attach opposite side of driver side front Support Bracket to
inside hole in the Mounting Bracket using the included (1) 10mm x 30mm Hex Head Bolt, (1) 10mm
Hex Nut, (1) 10mm Lock Washer, and (2) 10mm Flat Washers (Figure 6). Do not tighten at this time.
1500 and 2500 Models
6. From the inner side of the center body mount, place (1) Center Support Bracket onto front side of the
body mount. Attach Center Support Bracket to body mount using the included (1) 12-1.75mm x 30mm
Hex Head Bolt, (1) 12mm Hex Nut, (1) 12mm Lock Washer, and (2) 12mm Flat Washers (Figure 7 &
8). Do not tighten at this time. NOTE: Larger hole on the Center Support Bracket mounts to body
mount.
7. Attach opposite side of Center Support Bracket to center Mounting Bracket using the included (1) 10-
1.50mm x 25mm Hex Head Bolts, (1) 10mm Hex Nuts, (1) 10mm Lock Washers, and (2) 10mm Flat
Washers (Figure 7 & 8). Do not tighten at this time.
8. Carefully position Driver Side Bar onto Mounting Brackets. Attach Side Bar to Mounting Brackets using
the included (6) 8-1.25mm x 20mm Hex Head Bolts, (6) 8mm Lock Washers, and (6) 8mm Flat
Washers (Figure 9). Do not tighten at this time.
9. Level and adjust Side Bar, then tighten all hardware at this time.
10. Repeat steps 2-9 for passenger Side Bar.
11. Do periodic inspections to the installation to make sure that all hardware is secure and tight.
To protect your investment, wax this product after installing. Regular waxing is recommended to add a
protective layer over the finish. Do not use any type of polish or wax that may contain abrasives that could
damage the finish.
For stainless steel: Aluminum polish may be used to polish small scratches and scuffs on the finish. Mild
soap may be used also to clean the Sidebar.
For gloss black finishes: Mild soap may be used to clean the Sidebar.
Page 2 of 5 2/9/09 Rev B (DP)
1500 Model Front Installation Pictured
2500 Model Front Installation Pictured
Bolt Plate
10mm Nut Plate
10mm x 30mm Hex Bolt
10mm Lock Washer
10mm Flat Washer
10mm x 30mm Hex Bolt,
10mm Hex Nut
10mm Flat Washers
10mm Lock Washer
10mm Nut Plate
10mm x 30mm Hex Bolt
10mm Lock Washer
10mm Flat Washer
Fig 1
Fig 2
Fig 3
Fig 4
Driver Side Front
Bracket Pictured
Front of Vehicle
Front of Vehicle
Factory Bolt
Driver Side Installation Pictured
Page 3 of 5 2/9/09 Rev B (DP)
2500 Model Front Installation Pictured
2500 Model Front Installation Pictured
2500 Model Center Installation Pictured
1500 Model Center Installation Pictured
10mm x 30mm Hex Bolt,
10mm Hex Nut
10mm Flat Washers
10mm Lock Washer
8mm x 20mm Hex Bolt,
8mm Lock Washer, &
10mm Flat Washer
Fig 5
Fig 6
Fig 7
Fig 9
Fig 10
12mm x 30mm Hex Bolt
12mm Hex Nut
12mm Flat Washers
12mm Lock Washer
10mm x 30mm Hex Bolt
10mm Flat Washers
10mm Lock Washer
10mm Hex Nut
12mm x 30mm Hex Bolt
12mm Hex Nut
12mm Flat Washers
12mm Lock Washer
10mm x 30mm Hex Bolt,
10mm Hex Nut
10mm Flat Washers
10mm Lock Washer
Fig 8
Page 4 of 5 2/9/09 Rev B (DP)
Example of GM factory body mount bolt
IMPORTANT ALERT: GM uses a very strong thread-locking compound on all body bolts. Use
of an air assisted impact ratchet can cause damage to the threads on factory body mount
bolts and the internal nut assembly because of this thread locking compound.
We only recommend the use of hand tools to slowly remove and reinstall body mount bolts on
all GM vehicles.
PROCEDURE:
CRITICAL INFORMATION: If during the removal process, it becomes increasingly difficult to
unscrew the body mount bolt with hand tools, tighten the bolt several rotations to clear the
thread locking compound from the threads, then reverse direction and continue to unscrew
until the body mount bolt is out. Repeat this process as necessary on all GM body mount
bolts. Use of an appropriate anti-seize compound is highly recommended for re-installation.
Tighten body mount bolt to factory torque specifications for your particular model year.
Page 5 of 5 2/9/09 Rev B (DP)
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