DKGM-48D - Car radio CRUX - Free user manual and instructions

Product Type	Radio Interface Module for GM Vehicles
Brand	CRUX
Model	DKGM-48D
Vehicle Compatibility	Select GM Class II Data Bus vehicles: Buick (2004-2011), Cadillac (2003-2006), Chevrolet (2000-2013), GMC (2002-2011), Hummer (2003-2010), Isuzu (2003-2008), Oldsmobile (2000-2004), Pontiac (2000-2008), Saab (2005-2008), Saturn (2005-2007)
Functions	Retains factory features (chimes, steering wheel controls, voice recognition), works with aftermarket radio
Audio System Support	Bose, Y-91, and non-amplified systems
Chime Retention	Yes (seat belt, check engine, key in ignition, low fuel, low oil, lights on)
Chime Volume Adjustment	Built-in potentiometer (adjustable with screwdriver)
Steering Wheel Control (SWC) Retention	Pre-programmed, supports multiple radio brands
SWC Cable Type	3.5mm with Option A (Alpine, Clarion, JVC, Kenwood) and Option B (Boss, Dual, Fahrenheit, Jensen, Pioneer, Power Acoustik, Sony, Soundstream)
Radio Brand DIP Switch Settings	Configurable for Alpine, Clarion, Kenwood, JVC, Boss, Sony, and others
Dash Kit	Double DIN included
Wiring	EIA color coded for easy installation
Included Parts	GM-48D Module, GM-48D Harness (GM-C2), SWC Cables, Double DIN Dash Kit
Installation Notes	Front/Rear fading not retained on Y-91 Bose system; cap/insulate unused 3.5mm plug or Blue/Yellow wire

Frequently Asked Questions - DKGM-48D CRUX

Which vehicles are compatible with the CRUX DKGM-48D?

The DKGM-48D is designed for select GM Class II Data Bus vehicles from brands like Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, and Saturn. Model years typically range from 2000 to 2013. Refer to the vehicle applications list in the manual for exact compatibility.

Does the DKGM-48D support Bose audio systems?

Yes, it has a built-in Bose adaptor that provides proper audio input gain. Connect the male 8-pin connector to the GRAY female 8-pin connector on the module for Bose systems. For non-Bose, use the BLACK female 8-pin connector.

How do I adjust the chime volume?

The module includes a potentiometer. Use a suitable screwdriver to turn it clockwise to increase volume or counter-clockwise to decrease. The default setting is halfway.

How do I program the steering wheel controls (SWC)?

The DKGM-48D is pre-programmed for most vehicles. Set the DIP switches to match your aftermarket radio brand. For some off-brand radios, consult the radio manual to see if SWC buttons need additional programming.

What are the DIP switch settings for my radio brand?

Settings depend on the brand. For example, Alpine: all OFF; Kenwood: all ON; JVC: ON-OFF-ON; Boss/Old Sony: ON-OFF-OFF; New Sony: OFF-ON-OFF. Refer to the DIP switch table in the manual for complete list.

What is the difference between Option A and Option B SWC cables?

Option A connects the Blue/Yellow wire for Alpine, Clarion, JVC, and Kenwood units. Option B uses the 3.5mm plug for Boss, Dual, Fahrenheit, Jensen, Pioneer, Power Acoustik, Sony, and Soundstream units. Cap or insulate the unused connection.

Can I use the DKGM-48D with an aftermarket radio that has a different connector?

Yes, the module includes a harness with standard connectors. The 3.5mm SWC cable and DIP switch settings allow compatibility with many major aftermarket radio brands.

Does the DKGM-48D retain all factory chime functions?

Yes, it retains chimes for seat belt, check engine, key in ignition, low fuel, low oil, and lights on. Note that front and rear fading are not retained on Y-91 Bose systems.

What tools are needed for installation?

Basic installation tools like screwdrivers, wire strippers, and possibly a socket set. The wiring is EIA color coded for easy connection. The dash kit is Double DIN and includes mounting brackets and trim ring.

Where can I find the full installation diagram?

The manual includes an installation diagram showing connections between the 24-pin connector, 16-pin black connector, CRUX module, aftermarket radio, and SWC cables. It is available in PDF format on notice-facile.com.

USER MANUAL DKGM-48D CRUX

• 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, Y-91 and non-amplified audio systems.
• Retains chime functions.
• Built-in chime volume adjustment.
• Double DIN Dash Kit included.
• EIA color coded wiring for easy installation.

PARTS INCLUDED:

GM-48D Module

GM-48D Harness (GM-C2)

SWC Cables

Double DIN Dash Kit

INSTALLATION DIAGRAM:

graph TD
    A["24-Pin Connector"] -->|To Factory Harness| B["TO FACTORY HARNESS"]
    B --> C["Reverse Illumination (+)"]
    B --> D["Amplifier Turn-on +12V Constant"]
    B --> E["Ground Right Front (-)"]
    B --> F["Left Front (+)"]
    B --> G["Right Rear (-)"]
    B --> H["Left Rear (-)"]
    B --> I["Violet/White Orange Blue/ White Yellow Red Black Gray White Black White Violet Violet Violet Green Green"]
    A --> J["16-Pin Black Connector"]
    J --> K["CRUX"]
    K --> L["Chime volume adjustment"]
    L --> M["Aftermarket Radio Selector (See Chart)"]
    M --> N["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."]
    K --> O["See below for Audio connection options"]
    O --> P["Insulate with tape if not being used"]
    K --> Q["Option A: Cap or insulate if not being used"]
    K --> R["Option B: Insulate with tape if not being used"]

NOTES:

1. The Front and Rear fading are not retained on Y-91 Bose System.
2. Chime includes: seat belt, check engine, key in ignition, low fuel, low oil and lights on.

DIP SWITCH SETTINGS:

SETTING THE AFTERMARKET RADIO BRAND

With the key in the off position, set the DIP switches to the corresponding radio listed below. See page 4 for SWC button functions.

RADIO BRAND:	DIP#:	1	2	3
Atoto, Dual, Fahrenheit, Jensen		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		OFF	ON	OFF

SWC MODULE DIP SWITCH

NOTE: For Atoto, Blaupunkt, Dual, Farenheit, Power Acoustik, Soundstream, and most off-brand radios, check the aftermarket radio's manual to see if the SWC buttons need to be programmed.

3.5MM SWC CABLE

The SWRGM-48D Module allows for both types of connections:

OPTION A is used for ALPINE, CLARION, JVC, and KENWOOD units (Blue/Yellow wire is attached)

OPTION B is used for BOSS, DUAL, FAHRENHEIT, JENSEN, PIONEER, POWER ACOUSTIK, SONY & SOUND STREAM units.

NOTE: Cap or insulate the 3.5mm plug or Blue/Yellow wire if not being used.

SELECTING THE AUDIO SYSTEM:

If the vehicle is equipped with a Bose system, the DKGM-48D has a built-in Bose adaptor that allows the proper audio input gain from the aftermarket radio to the Bose amplifier. To use this feature, plug in the male 8-pin connector on the harness to the GRAY female 8-pin connector on the GM-48D module. The module is also labeled “Bose” and “Non Bose” to avoid confusion. (see picture below)

If the vehicle is NOT equipped with a Bose system, plug in the male 8-pin connector to the BLACK female 8-pin on the GM-48D module.

CHIME VOLUME ADJUSTMENT:

The DKGM-48D has a potentiometer to adjust the chime volume. It is set at half way by default. To adjust the volume, simply use a suitable screwdriver and turn the potentiometer clockwise to increase the volume and counter-clockwise to decrease the volume.

DASH KIT INSTALLATION:

Please make sure that you have all the parts shown below.

(1) Main trim ring
(1) Left ISO mounting bracket
(1) Right ISO mounting bracket

Technical line drawing of a mechanical assembly with multiple views (front, side, and internal components) without any text or symbols.

Dash Kit Assembly

Technical line drawing of a metal frame assembly with mounting brackets (no text or symbols)

For some Cadillac installation, see diagram below:

VEHICLE APPLICATIONS:

Buick

2004-2005	Century	2004--2011	Canyon
2005-2007	LaCrosse	2002-2009	Envoy
2004-2007	Rainier	2003-2007	Savana
2003-2007	Rendezvous	2003-2006	Sierra
2005-2007	Terraza	2007	Sierra Classic
Cadillac		2003-2006	Yukon
2003-2006	Escalade	Hummer
Chevrolet		2003-2007	H2
2003-2006	Avalanche	2005-2010	H3
2000-2005	Cavalier	Isuzu
2004-2013	Colorado	2003-2008	Ascender
2005-2013	Corvette	Oldsmobile
2004-2007	Express	2001-2004	Alero
2000-2005	Impala	2002-2004	Bravada
2001-2003	Malibu	2000-2004	Silhouette
2000-2005	Monte Carl	Pontiac
2003-2004	S-10	2001-2005	Aztec
2003-2006	Silverado	2001-2005	Grand Am
2007	Silverado Classic	2004-2008	Grand Prix
2003-2006	SSR	2000-2006	Montana
2003-2006	Suburban	2000-2005	Sunfire
2003-2006	Tahoe	Saab
2002-2009	Trailblazer	2005-2008	9-7X
2005-2008	Uplander	Saturn
2003-2005	Venture	2005-2007	Relay

GMC

2004--2011	Canyon
2002-2009	Envoy
2003-2007	Savana
2003-2006	Sierra
2007	Sierra Classic
2003-2006	Yukon
Hummer
2003-2007	H2
2005-2010	H3
Isuzu
2003-2008	Ascender
Oldsmobile
2001-2004	Alero
2002-2004	Bravada
2000-2004	Silhouette
Pontiac
2001-2005	Aztec
2001-2005	Grand Am
2004-2008	Grand Prix
2000-2006	Montana
2000-2005	Sunfire
Saab
2005-2008	9-7X
Saturn
2005-2007	Relay