JL Audio Stealthbox SB-GM-AVAL/12W3v3 Installation Manual

I N S T A L L A T I O N G U I D E
for the
SB-GM-AVAL/12W3v3 SB-GM-AVAL/12W3v3
SB-GM-AVAL/12W6v2 SB-GM-AVAL/12W6v2
2001-Up Chevrolet Avalanche & 2001-Up Chevrolet Avalanche &
2002-Up Cadillac EXT 2002-Up Cadillac EXT
Thank you for choosing a JL Audio Stealthbox
installation, your new vehicle-specific enclosed subwoofer system will deliver years of listening pleasure.
We strongly recommend that you have your new Stealthbox
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 1 year 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.
® for your automotive sound system. With proper
® installed by your authorized JL Audio
If you choose to perform the installation yourself, it is absolutely vital that
the Stealthbox ® 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.
SB-GM-AVAL_INSTR_SKU#011017 SB-GM-AVAL_INSTR_SKU#011017
INSTALLATION
D I F F I C U L T Y :
2
S T E P 1
Remove any contents from the rear seats.
S T E P 2
Bring both front seats to their forward most position.
Collaspe the rear seats.
Remove the plastic mid-gate hinge covers.
S T E P 3
With an 13mm deep socket, remove the pair of bolts that
secure each hinge to the mid-gate.
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