Page 1
Installation instructions for part AX-GMCL2
®
CAUTION!
All accessories, switches, climate controls panels, and
especially air bag indicator lights must be connected before cycling
the ignition. Also, do not remove the factory radio with the key in the
on position, or while the vehicle is running.
• Provides accessory power (12-volt 10-amp)
• Retains R.A.P. (retained accessory power)
• Provides NAV outputs (parking brake,
reverse, and speed sense)
• Retains chimes through an onboard speaker
• Pre-wired ASWC-1 harness (ASWC-1 sold
separately)
• Designed for non-amplified models, analog
amplified models, or when bypassing a
factory amplifier
• Retains balance and fade
• Micro “B” USB updatable
INTERFACE FEATURES
• Wire cutter • Crimp tool • Solder gun • Tape
• Connectors (example: butt-connectors, bell caps, etc.)
TOOLS REQUIRED
AX-GMCL2
GM Data Interface
2000-2013
Connections to be made ................................................... 2
Installing the AX-GMCL2 .................................................. 3
Initializing the AX-GMCL2 ................................................ 3
Table of Contents
• AX-GMCL2 interface • AX-GMCL2 harness
INTERFACE COMPONENTS
APPLICATIONS
See application list inside cover
Page 2
AX-GMCL2
®
Connections to be madeApplications
From the AX-GMCL2 harness to the aftermarket radio:
• Connect the Black wire to the ground wire.
• Connect the Yellow wire to the battery wire.
• Connect the Red wire to the accessory wire.
• Connect the Blue/White wire to the amplifier turn on wire.
• Tape off and disregard the Orange/White wire, it will not be used in this application
.
• If the aftermarket radio has an illumination wire, connect the Orange wire to it.
Note: There are (2) illumination wires. If the Orange wire on the 24-pin harness
is populated on the factory side, use that wire instead.
• Connect the Gray wire to the right front positive speaker output.
• Connect the Gray/Black wire to the right front negative speaker output.
• Connect the White wire to the left front positive speaker output.
• Connect the White/Black wire to the left front negative speaker output.
• Connect the Green wire to the left rear positive speaker output.
• Connect the Green/Black wire to the left rear negative speaker output.
• Connect the Purple wire to the right rear positive speaker output.
• Connect the Purple/Black wire to the right rear negative speaker output.
The following (3) wires are only for multimedia/navigation radios that require these wires.
• Connect the Blue/Pink wire to the VSS/speed sense wire.
• Connect the Green/Purple wire to the reverse wire.
• Connect the Light Green wire to the parking brake wire.
BUICK
Century 2004-2005
LaCrosse 2005-2009
Rainier * 2004-2007
Regal 2004
Rendezvous 2002-2007
Terraza 2005-2007
CADILLAC
Escalade, Escalade ESV & EXT †
2003-2006
CHEVROLET
Avalanche ** 2003-2006
Cavalier 2000-2005
Colorado 2004-2012
Corvette 2005-2013
Express 2003-2007
Impala 2000-2005
Kodiak C4500-C8500
2003-2009
Malibu 2001-2003
Malibu Classic 2004-2005
Monte Carlo 2000-2005
CHEVROLET (CONT)
Silverado ** 2003-2006
Silverado Classic ** 2007
SSR * 2003-2006
Suburban ** 2003-2006
Tahoe ** 2003-2006
Trailblazer * 2002-2006
Trailblazer 2007-2009
Uplander 2005-2008
GMC
Canyon 2004-2012
Envoy * 2002-2006
Envoy 2007-2009
Savana 2003-2007
Sierra ** 2003-2006
Sierra Classic ** 2007
TopKick C4500-C8500
2005-2009
Yukon / Yukon XL ** 2003-2006
HUMMER
H2 † 2003-2007
H3/H3t 2006-2010
ISUZU
Ascender 2003-2008
H-Series 2003-2008
I-Series 2006-2008
OLDSMOBILE
Alero 2001-2004
Bravada 2002-2004
Intrigue 2002
PONTIAC
Aztec 2001-2005
Grand Am 2001-2005
Grand Prix 2004-2008
Montana SV6 2005-2006
Sunfire 2000-2005
SAAB
9-7x 2005-2009
SATURN
Relay 2005-2007
* These vehicles have a digital amplifier option. Please reference the “Service Parts Identification”
sticker located in the glove box for the RPO code UQA. If UQA is present, then the vehicle is
equipped with a digital amplifier. Either use the AX-GMCL2-SWC interface, or bypass the amplifier.
** These vehicles have a digital amplifier option. Please reference the “Service Parts Identification”
sticker located in the glove box for the RPO code Y91. If Y91 is present, then the vehicle is equipped
with a digital amplifier. Either use the AX-GMCL2-SWC interface, or bypass the amplifier.
† These vehicles are standard for a digital amplifier. Either use the AX-GMCL2-SWC interface,
or bypass the amplifier.
Page 3
AX-GMCL2
®
Installing the AX-GMCL2
With the key in the off position:
• Connect the AX-GMCL2 harness into the interface, and then to the wiring
harness in the vehicle.
Note: If using the ASWC-1, connect it after you initialize and test the AX-
GMCL2, with the key in the off position.
Initializing the AX-GMCL2
Attention! If the interface loses power for any reason, the following steps will need
to be performed again. Also, if installing an ASWC-1 connect it after you initialize
and test the interface/radio, with the key in the off position.
• Turn the key (or push-to-start button) to the ignition position and wait until the
radio comes on.
Note: If the radio does not come on within 60 seconds, turn the key to the
off position, disconnect the interface, check all connections, reconnect the
interface, and then try again.
• Turn the key to the off position, and then to the accessory position. Test all
functions of the installation for proper operation, before reassembling the dash.
12-pin pre-wired ASWC-1 harness:
• This harness is to be used along with the optional ASWC-1 (not included) to
retain steering wheel audio controls. If the ASWC-1 is not being used, disregard
this harness. If it will be used, please refer to the ASWC-1 instructions for radio
connections and programming.
Note: Disregard the harness that comes with the ASWC-1.
• The following wire(s) must be cut before programming the ASWC-1:
* For the following vehicles cut the White/Green, Green/Orange, and
Orange/Green wires.
** For the following vehicles cut the White/Green, Pink, and Green/Orange wires.
*** For the following vehicles cut the Pink and Green/Orange wires.
† For the following vehicles cut the White/Green and Pink wires.
‡ For the following vehicles cut the Pink wire.
BUICK
Century † 2004-2005
LaCrosse † 2005-2009
Rainer * 2004-2007
Regal † 2004
Rendezvous ‡
2002-2007
Terraza ‡ 2005-2007
CADILLAC
Escalade, Escalade ESV
& EXT * 2003-2006
CHEVROLET
Avalanche * 2003-2006
Cavalier * 2000-2005
Colorado * 2004-2012
CHEVROLET (continued)
Corvette *** 2007-2011
Corvette ‡ 2012-2013
Impala ** 2000-2005
Malibu 2001-2003
Malibu Classic
2004-2005
Monte Carlo **
2000-2005
Silverado * 2003-2006
Silverado Classic * 2007
SSR * 2003-2006
Suburban * 2003-2006
Tahoe * 2003-2006
Trailblazer * 2002-2009
Uplander ** 2005-2008
GMC
Canyon * 2004-2012
Envoy * 2002-2009
Sierra * 2003-2006
Sierra Classic * 2007
Yukon * 2003-2006
Yukon XL * 2003-2006
HUMMER
H2 * 2003-2007
ISUZU
Ascender * 2003-2008
OLDSMOBILE
Alero ** 2001-2004
Bravada * 2002-2004
Intrigue ** 2002
PONTIAC
Aztec ** 2001-2005
Grand Am ** 2001-2005
Grand Prix **
2004-2008
Montana SV6 **
2005-2006
Sunfire * 2000-2005
SAAB
9-7x * 2005-2009
SATURN
Relay ** 2005-2007
IMPORTANT
If you are having difficulties with the installation of this product, please call our Tech
Support line. Before doing so, look over the instructions a second time, and make sure
the installation was performed exactly as the instructions are stated. Please have the
vehicle apart and ready to perform troubleshooting steps before calling.
If only the finest quality will do, then look no further than Axxess products. Accept no compromises, choose only quality OE integration interfaces.
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