Stealthbox
®
I N S T A L L A T I O N G U I D E
SB-GM-CLREXT/10W3v3, JL AUDIO, Inc 2010
Sheet SKU#011195 Revision 09.08.2015
Page 1
for the
SB-GM-CLREXT/10W3v3
(2004-2013 Chevrolet Colorado &
GMC Canyon Extended Cab)
This Stealthbox is a product which
requires professional installation skills
and tools.
Please read this installation guide thor-
oughly before beginning the project.
It will guide you step by step through
the installation. Several of the steps in
this process may require two people to
accomplish.
It is absolutely vital that the enclo-
sure be properly mounted to the
vehicle according to these instructions.
Failure to mount the enclosure properly
presents two problems: 1) The sub-
bass performance will suffer due to the
movement of the enclosure caused by
the force exerted by the woofer(s) and
2) A loose enclosure presents a serious
safety hazard in the event of a collision
or sudden deceleration.
Please enjoy your JL Audio Stealthbox
responsibly.
STEP 1:
Remove all contents from rear of
truck.
STEP 2:
Remove the plastic jack cover and
jack from the bracket.
STEP 3:
Remove the (1) tire stops and with a
10mm socket, (2&3)unbolt the jack bracket.
STEP 4:
Unbolt the bracket that is already
attached to the Stealthbox.
Set mounting hardware to the side. This will
be used in later steps.
STEP 5:
With the supplied hardware, attach
the bracket to the rear wall.
Place a 1/4” lock wash and a 1/4” flat washer
onto each #6x30mm-1mm bolt.
Place the bolts through the bracket and slide
one 1”Lx1”ODx3/8”ID spacer onto each bolt.
Line up the bolts to the factory threads and
secure tightly.
STEP 6:
Attach speaker wire to the Stealthbox
terminal and check the woofer for proper
operation.
START
HERE
Continued on Next Page
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