CRUX SWRGM-48 Radio Replacement Interface Owner’s Manual
- September 13, 2024
- CRUX
Table of Contents
CRUX SWRGM-48 Radio Replacement Interface
PRODUCT FEATURES
- Retains factory features in select GM Class II Data Bus vehicles while functioning with an aftermarket radio.
- Pre-programmed to retain factory Steering Wheel Controls.
- Voice Recognition Command from factory SWC.
- Supports Bose, non-Bose and Y-91 audio systems.
- Retains chime functions.
- Built-in chime volume adjustment.
- EIA color coded wiring for easy installation.
PARTS INCLUDED
INSTALLATION DIAGRAM
DIP SWITCH SETTINGS
AFTERMARKET RADIO DIP SWITCH SETTINGS
| Atoto, Dual, Fahrenheit, Jensen, Nakamichi, | OFF | ON | ON |
|---|---|---|---|
| Pioneer, Power Acoustik, Soundstream | OFF | ON | ON |
| Blaupunkt, Most off-brand Radio | OFF | ON | ON |
| Alpine | OFF | OFF | OFF |
| Clarion | ON | ON | OFF |
| Kenwood | ON | ON | ON |
| JVC | ON | OFF | ON |
| Boss, Old Sony | ON | OFF | OFF |
| New Sony (with CarPlay) | OFF | ON | OFF |
NOTE : For Atoto, Blaupunkt, Dual, Farenheit, Nakamichi, Power Acoustik, Soundstream, and most off-brand radios, check the aftermarket radio’s manual to see if the SWC buttons need to be programmed.
4-PIN SWC CABLE
Use the proper 3.5MM to 4-Pin SWC cable for the aftermarket radio you are
using.
OPTION A is used for ALPINE, CLARION. Use the Blue/Yellow wire for JVC and
KENWOOD units.
OPTION B is used for ATOTO, BLAUPUNKT, BOSS, DUAL, FARENHEIT, JENSEN, POWER
ACOUSTIK, PIONEER, SONY, SOUNDSTREAM and Most Off-Brand Radios.
NOTE : Cap or insulate the 3.5mm plug or Blue/Yellow wire if not being
used.
For aftermarket radios that have wires for SWC connections, cut off the 3.5mm
plug on the Crux SWC Cable (option B) and connect the SWC wires as follows:
Note that there are some radios that only have SWC1 and SWC2, in this case “shield” does not need to be connected.
SELECTING THE AUDIO SYSTEM
If the vehicle is equipped with an amplified audio system, the SWRGM-48 has
a built-in audio level adaptor that outputs the proper audio level from the
aftermarket radio to the factory amplifier. To use this feature, plug in the
male 8-pin connector on the SWRGM-48 harness to the GRAY female 8-pin
connector on the SWRGM-48 module. The module is also labeled “Bose” and “Non
Bose” to avoid confusion. (see picture below)
If the vehicle is NOT equipped with a factory amplified system, plug in the
male 8-pin connector to the BLACK female 8-pin on the SWRGM-48 module.
CHIME VOLUME ADJUSTMENT
The SWRGM-48 has a potentiometer to adjust the chime volume. It is set at
half way by default. To adjust the volume, simply use a suitable screw driver
and turn the potentiometer clockwise to increase the volume and counter-
clockwise to decrease the volume.
STEERING WHEEL CONTROL BUTTON FUNCTIONS
4 BUTTON SWC
| SWC Button | SHORT PRESS | LONG PRESS |
|---|
VOL + VOL – AM/FM
Preset
__
NOTES:
| Step Increment Step Decrement Source
Activate VR /
__
To Deactivate VR =
on Pioneer, press “PRESET”
on JVC = say “Cancel”
| Continuous VOL + Continuous VOL – Pick Up Call
End Call
__
To Deactivate VR =
on Kenwood, long press of PRESET
| SWC Button | SHORT PRESS | LONG PRESS |
|---|
ALPINE VOL + VOL –
Seek Up …_ Seek Down T Source Up Source Down Prog
Voice
| __
Step Increment Step Decrement Seek Up
Seek Down Pick up Call Source
| __
Continuous VOL + Continuous VOL – N/A
N/A End Call N/A
| SWC Button | SHORT PRESS | LONG PRESS |
|---|
CLARION VOL + VOL –
Seek Up …_ Seek Down T Source Up Source Down Prog
Voice
| __
Step Increment Step Decrement Preset Up Preset Down Pick up Call Source
Mute
Mute
| __
Continuous VOL + Continuous VOL – N/A
N/A End Call N/A N/A
N/A
| SWC Button | SHORT PRESS | LONG PRESS |
|---|
JVC VOL + VOL –
Seek Up Seek Up …_
Seek Down T Source Down Prog
Voice
__
NOTE:
| __
Step Increment Step Decrement Seek Up
Seek Down Pick up Call Source
Activate Voice Recognition Activate Voice Recognition
__
Say “CANCEL” to Deactivate VR
| __
Continuous VOL + Continuous VOL – N/A
N/A End Call N/A N/A N/A
| SWC Button | SHORT PRESS | LONG PRESS |
|---|
KENWOOD
VOL + VOL –
Seek Up …_ Seek Down T Source Up Source Down Prog
Voice
__
NOTE:
| __
Step Increment Step Decrement Seek Up
Seek Down Pick up Call Source
Activate Voice Recognition Activate Voice Recognition
__
BT Inactive, Source Up Activate Call History
| __
Continuous VOL + Continuous VOL – Tune Up
Tune Down
End Call, Deactivate VR N/A
Deactivate VR N/A
| SWC Button | SHORT PRESS | LONG PRESS |
|---|
PIONEER VOL + VOL –
Seek Up …_ Seek Down T Source Up Source Down Prog
Voice
| __
Step Increment Step Decrement Preset Up Preset Down Pick up Call Source
Activate Voice Recognition
Activate Voice Recognition
| __
Continuous VOL + Continuous VOL – N/A
N/A End Call N/A
Deactivate VR, End Call
Deactivate VR
ANALOG SWC
BUICK – Century, LaCrosse, Rainier, Rendevous, Terraza
CHEVROLET – Corvette, Impala, Monte Carlo
OLDSMOBILE – Alero, Bravada, Silhouette
PONTIAC – Aztec, Grand Am, Grand Prix, Montana, Sunfire
| SWC Button | SHORT PRESS | LONG PRESS |
|---|
ALPINE VOL + VOL –
Mode / Play
MUTE
Seek Up …_
Seek Down T
Type Seek / Band
Preset / 1-6
|
Step Increment Step Decrement Source Attenuation Seek Up
Seek Down Pick up Call
|
Continuous VOL + Continuous VOL – N/A
N/A N/A N/A N/A
End Call
| SWC Button | SHORT PRESS | LONG PRESS |
|---|
CLARION VOL + VOL –
Mode / Play
MUTE
Seek Up …_
Seek Down T
Type Seek / Band
Preset / 1-6
|
Step Increment Step Decrement Source
Mute
Preset Up Preset Down Pick up Call
N/A
|
Continuous VOL + Continuous VOL – N/A
N/A N/A N/A End Call
N/A
| SWC Button | SHORT PRESS | LONG PRESS |
|---|
JVC VOL + VOL –
Mode / Play
MUTE
Seek Up …_
Seek Down T Type Seek / Band Preset / 1-6
NOTE:
|
Step Increment Step Decrement Source
Mute Seek Up
Seek Down Pick up Call
Activate Voice Recognition
Say “CANCEL” to Deactivate VR
|
Continuous VOL + Continuous VOL – N/A
N/A N/A N/A End Call N/A
| SWC Button | SHORT PRESS | LONG PRESS |
|---|
KENWOOD
VOL + VOL –
Mode / Play
MUTE
Seek Up …_
Seek Down T
Type Seek / Band
Preset / 1-6
|
Step Increment Step Decrement Source Attenuation Seek Up
Seek Down Pick up Call
Activate Voice Recognition
|
Continuous VOL + Continuous VOL – N/A
N/A N/A N/A
End Call, Deactivate VR
N/A
| SWC Button | SHORT PRESS | LONG PRESS |
|---|
PIONEER VOL + VOL –
Mode / Play
MUTE
Seek Up …_
Seek Down T Type Seek / Band Preset / 1-6
|
Step Increment Step Decrement Source
Mute
Preset Up Preset Down Pick up Call
Activate Voice Recognition /
Deactivate Voice Recognition
|
Continuous VOL + Continuous VOL – N/A
N/A N/A N/A End Call N/A
VEHICLE APPLICATIONS
Buick
2004-2005
2005-2007
2004-2007
2003-2007
2005-2007
|
Century LaCrosse Rainier Rendezvous Terraza*
---|---
Cadillac
2003-2006
|
Escalade
Chevrolet
2003-2006
2000-2005
2004-2013
2005-2013
2004-2007
2000-2005
2001-2003
2000-2005
2003-2004
2003-2006
2007
2003-2006
2003-2006
2003-2006
2002-2009
2005-2008
2003-2005
|
Avalanche Cavalier Colorado Corvette Express Impala Malibu Monte Carlo* S-10
Silverado Silverado Classic SSR
Suburban Tahoe Trailblazer Uplander Venture
Isuzu
2003-2008
|
Ascender
GMC
2004-2011
2002-2009
2003-2007
2003-2006
2007
2003-2006
| ****
Canyon Envoy Savana Sierra
Sierra Classic
Yukon
---|---
Hummer
2003-2007
2005-2010
| ****
H2 H3
---|---
Oldsmobile
2001-2004
2002-2004
2000-2004
| ****
Alero Bravada Silhouette*
---|---
Pontiac
2001-2005
2001-2005
2004-2008
2000-2006
2000-2005
| ****
Aztec Grand Am Grand Prix Montana Sunfire*
---|---
Saab
2005-2008
|
9-7X
---|---
Saturn
2005-2007
|
Relay
---|---
*Analog Steering Wheel Controls. See pages 5 and 6 for SWC button functions.
Crux Interfacing Solutions • Chatsworth, CA 91311
phone: 818-609-9299 • fax:
818-996-8188 •
www.cruxinterfacing.com