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I N S T A L L A T I O N G U I D E
2007 - Up Chevrolet Silverado / GMC Sierra
Crew Cab Trucks
Thank you for choosing a JL Audio Stealthbox
for your automotive sound system. With proper
installation, your new vehicle-specific enclosed subwoofer system will deliver years of listening pleasure.
We strongly recommend that you have your new Stealthbox
installed by your authorized JL Audio
dealer. The installation professionals employed by your dealer have the necessary tools and experience
to disassemble and reassemble your vehicle properly. Also, keep in mind that your warranty coverage
extends to 2 years if your system is installed or approved by your authorized JL Audio dealer. If you
prefer to perform your own installation, please read this installation guide completely
before beginning the process.
If you choose to perform the installation yourself, it is absolutely vital that
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).
2) A loose enclosure presents a serious safety hazard in the event of a collision
or sudden deceleration.
S T E P 1
Thread the supplied socket cup screws into the bottom of
the Stealthbox®, leaving 1/2-inch of the threads exposed.
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S T E P 2
Place the Stealthbox® into the truck, like in the picture.
S T E P 3
Remove the paper backing from the supplied wax squares.
Eye ball the placement of the wax squares onto the floor
with the Stealthbox® placed into the truck.
D I FF I CU LT Y: