Owner's Manual

Crux Interfacing Solutions • 21541 Nordhoff St., Unit C, Chatsworth, CA 91311
phone: [phone] • fax: [phone] • www.cruxinterfacing.com
rev.020620
1 of 6
RADIO REPLACEMENT
SWC RETENTION
+
R
INTERFACING SOLUTIONS
- 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.
PRODUCT FEATURES:
PARTS INCLUDED:
INSTALLATION DIAGRAM:
SWRGM-48 MODULE SWRGM-48 HARNESS SWC CABLE
AFTERMARKET
RADIO
Reverse Red/White

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






TO FACTORY
HARNESS
16-Pin Black
Connector
Non Bose Bose
See below for Audio
connection options
24-Pin
Connector
1 2 3
ON
AFTERMARKET
RADIO SELECTOR
(See Chart)
Option A:
Option B:
Cap or insulate if
not being used
BLUE / YELLOW
3.5MM SWC CABLES (Option A or B)
Use the proper 3.5MM to 4-Pin cable for your
radio. Plug in the selected 3.5MM SWC cable
to the 4-pin port on the module. See “DIP
SWITCH SETTINGS” section.
Insulate with tape
if not being used
Chime volume
adjustment
SWRGM-48
Radio Replacement Interface with Steering Wheel Control
Retention for select GM Class II Vehicles