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Hover Over an Option
To get a detailed description of each category and it's available options, to help you make the correct selection.
Retain Steering Wheel Controls
Keep your factory steering wheel controls with Metra's ASWC-1. Easy to install with an aftermarket radio, easy to program with our auto detect feature.
Replace Factory Radio
Remove that featureless factory radio and install an aftermarket radio with Axxess's radio replacement interfaces and harnesses.
Add Remote Start
Cut down in installation time with Axxess's remote start vehicle specific harnesses.
Add Cameras to Factory Radio
Stay aware of your surroundings and improve safety by adding cameras to your existing factory screen.
Add Amp to Factory Radio
Get the sound quality you're looking for by adding aftermarket amplifiers to your factory radio with Axxess's Add-n-amp option.
Device Connection
Stay safe and connected while driving by installing an Axxess connectivity interface and mobility products.
Digital Signal Processor
Upgrade your sound, keep your factory radio and retain your functions with our versatile digital signal processor.
Add Navigation to Factory Radio
Add iGO Primo Navigation to your OEM radio! You can also add on a reverse camera, an HDMI input for smart device mirroring, and more.
< Back AX-ADGM03


2000-2013 GM Axxess ADBOX Harness

USA MSRP: $42.00 USD

  • This ADBOX harness must be used in conjunction with the appropriate interface box. AX-ADBOX1 or AX-ADBOX2 (Sold Separately)
  • Please refer to AX-ADBOX1 or AX-ADBOX2 for 16-pin connector with stripped leads.


  • Provides accessory power (12-volt 10-amp)
  • Maintains the retained accessory power
    (R.A.P.) feature
  • Provides NAV outputs (parking brake, reverse, speed sense)
  • Retains chimes
  • Retains OnStar / OE Bluetooth
  • Adjustable OnStar level
  • Retains RSE (rear seat entertainment) (1)
  • Retains satellite radio
  • Retains the factory AUX-IN jack
  • Pre-wired ASWC-1 harness (ASWC-1 sold separately)
  • Can be used in non-amplified, or analog/digital amplified models
  • Retains balance and fade (2)
  • Micro “B” USB updatable

(1) Only for models that have the RSE controlled through the factory radio. Not for models that have an external power button at the RSE.
(2) To retain fade in digital amplified models, use the AX-ADBOX1

See below for Required ADBOX interface options. ( website only)

Century 2004-2005
LaCrosse 2005-2009
Rainier (RPO code UQA)* 2004
Rainier 2005-2007
Regal 2004
Rendezvous 2002-2007
Terraza 2005-2007

Escalade 2003-2006**
Escalade EXT 2003-2006**
Escalade ESV 2003-2006**

Avalanche (RPO code Y91)* 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
Silverado (RPO code Y91)* 2003-2006
Silverado (Classic) (RPO code Y91)* 2007
SSR (RPO code UQA)* 2003-2006
Suburban (RPO code Y91)* 2003-2006
Tahoe (RPO code Y91)* 2003-2006
Trailblazer (RPO code UQA)* 2002-2004
Trailblazer 2005-2009
Uplander 2005-2008

Canyon 2004-2012
Envoy (RPO code UQA)* 2002-2004
Envoy 2005-2009
Savanna 2003-2007
Sierra (RPO code Y91)* 2003-2006
Sierra (Classic) (RPO code Y91)* 2007
TopKick C4500-C8500 2005-2009
Yukon/Yukon XL (RPO code Y91) * 2003-2006

H2** 2003-2007
H3/H3t 2006-2010

Ascender 2003-2008
H-Series 2003-2008
I-Series 2006-2008

Alero 2001-2004
Bravada* 2002-2004
Intrigue 2002

Aztec 2001-2005
Grand Am 2001-2005
Grand Prix 2004-2008
Montana SV6 2005-2006
Sunfire 2000-2005

9-7× 2005-2009

Relay 2005-2007

* These vehicles have a digital amplifier option. Please refer to the Service Parts Identification sticker located in the glove box (for all models except for the Buick Regal which is on the spare tire cover). If the codes UQA or Y91 are present, then you have a digital amplifier.

** These vehicles are standard for a digital amplifier

Required Installation Parts

AX-ADGM03 requires additional parts for installation.
See Product Features for details.