DKGM-48S - Audio Interface / Mounting Kit CRUX - Free user manual and instructions

Product Type	Audio Interface / Mounting Kit
Brand	CRUX
Model	DKGM-48S
Category	Car Audio Accessories
Compatible Vehicles	Select GM models (2000-2010)
Dimensions (L x W x H)	4.7 x 3.2 x 1.1 inches
Weight	0.5 lbs
Power Input	12V DC (vehicle battery)
Audio Input	RCA, Speaker-level
Audio Output	RCA, Optical (if applicable)
Mounting Type	Double DIN / Single DIN with pocket
Material	ABS Plastic, Metal brackets
Color	Black
Installation	Plug-and-play with included harness
Special Features	Retains factory chimes, steering wheel controls, OnStar
Warranty	1-year limited

Frequently Asked Questions - DKGM-48S CRUX

What vehicles is the CRUX DKGM-48S compatible with?

The DKGM-48S is designed for select General Motors vehicles from model years 2000 to 2010. Check the CRUX website for a full vehicle fitment list.

Does this interface retain factory features like chimes and OnStar?

Yes, the DKGM-48S is engineered to retain factory chimes, OnStar, and steering wheel controls when used with an aftermarket radio.

Can I install this myself or do I need professional help?

Installation is plug-and-play with the included wiring harness. Basic knowledge of car audio installation is recommended. If unsure, consult a professional.

What type of aftermarket radio does it support?

It supports most single DIN and double DIN aftermarket radios from brands like Pioneer, Kenwood, Sony, etc. Ensure your radio has the correct input/output connections.

Does the kit include a mounting bracket or just the interface?

The DKGM-48S is a combination interface and mounting kit. It includes the electronic module, wiring harness, and necessary brackets for installation.

How long is the warranty?

CRUX provides a 1-year limited warranty against defects in materials and workmanship. Keep your receipt for proof of purchase.

Will this work with a Bose factory audio system?

Yes, the DKGM-48S is compatible with Bose and other premium factory systems, retaining audio quality and balance.

What do I do if the interface is not turning on?

Check all connections: ensure the harness is properly seated, verify the vehicle’s fuse for the radio circuit, and confirm the radio is receiving power. If issues persist, contact CRUX support.

Can I still use the factory aux input?

The DKGM-48S typically supports retaining factory auxiliary inputs (if equipped). Refer to the installation manual for specific wiring instructions.

Is technical support available?

Yes, CRUX offers phone and email support. Visit the CRUX website for contact details and additional resources like installation videos.

USER MANUAL DKGM-48S 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.
• Single DIN Dash Kit included.
• EIA color coded wiring for easy installation.

PARTS INCLUDED:

GM-48S Module

GM-48S Harness (GM-C2)

SWC Cables

Single DIN Dash Kit

INSTALLATION DIAGRAM:

graph TD
    A["TO FACTORY HARNESS"] --> B["24-Pin Connector"]
    B --> C["16-Pin Black Connector"]
    C --> D["CRUX"]
    D --> E["Chime volume adjustment"]
    E --> F["Aftermarket RADIO SELECTOR (See Chart)"]
    F --> G["3.5MM SWC CABLES (Option A or B)"]
    G --> H["Cap or insulate if not being used"]
    H --> I["Insulate with tape if not being used"]
    I --> J["Blue/YELLOW"]
    J --> K["Option A"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333
    style F fill:#ffc,stroke:#333
    style G fill:#fcc,stroke:#333
    style H fill:#ffc,stroke:#333
    style I fill:#cfc,stroke:#333
    style J fill:#fcc,stroke:#333
    style K fill:#ffc,stroke:#333

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 8 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

1 2 3

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-48S 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 ATOTO, BOSS, DUAL, FAHRENHEIT, JENSEN, PIONEER, POWER ACOUSTIK, SONY, SOUND STREAM and other Off-Brand headunits.

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-48S 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-48S 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-48S module.

CHIME VOLUME ADJUSTMENT:

The DKGM-48S 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.

DASH KIT INSTALLATION:

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

Technical line drawing of a mechanical assembly with no visible text or symbols

2001-2005 PONTIAC GRAND AM

DASH DISASSEMBLY INSTRUCTIONS

1. Pry out trim bezel with a panel removal tool, disconnect harness and remove.
2. Remove 3 (three) screws, remove antenna lead and harnesses.
3. Remove the radio.

DIN MOUNT INSTALLATION

1. Insert DIN sleeve from your new radio into the opening of the installation kit.
2. Depress the tabs from the inside of sleeves to secure sleeves to the installation kit.

Line drawing of a rectangular device with two horizontal panels, no text or symbols present

2003-2006 CADILLAC ESCALADE

2003-2006 CHEVROLET AVALANCHE

2003-2006 CHEVROLET SILVERADO

2007 CHEVROLET SILVERADO (CLASSIC)

2003-2006 CHEVROLET SUBURBAN

2003-2006 GMC SIERRA

2003-2006 GMC YUKON/DENALI/XL

DASH DISASSEMBLY INSTRUCTIONS

1. Place key into the ignition, turn the key to the "ON" position.
2. Shift into first gear.
3. Starting from the bottom, carefully pry the trim bezel from around the radio.
4. Remove 3 (three) bolts, remove antenna lead and harnesses.
5. Remove the radio.

DIN MOUNT INSTALLATION

1. Insert DIN sleeve from your new radio into the opening of the installation kit.
2. Depress the tabs from the inside of sleeves to secure sleeves to the installation kit.

Technical line drawing of a rectangular device with two panels and ports (no text or symbols)

2000-2005 CHEVROLET CAVALIER

2000-2005 PONTIAC SUNFIRE

DASH DISASSEMBLY INSTRUCTIONS

1. Open the glove box, and remove 5 (five) screws.
2. Remove side panels from both the driver and passenger side.
3. Remove 1 (one) screw from each side.
4. Remove 1 (one) screw from the top center of the air vent.
5. Remove the dash bezel.
6. Remove the 3 (three) screws holding the radio, remove antenna lead and harnesses.
7. Remove the radio.

DIN MOUNT INSTALLATION

1. Insert DIN sleeve from your new radio into the opening of the installation kit.
2. Depress the tabs from the inside of sleeves to secure sleeves to the installation kit.

Technical line drawing of a rectangular device with internal components and connectors (no text or symbols)

2004-2006 CHEVROLET COLORADO

2004 CHEVROLET EXPRESS

2004-2006 GMC CANYON

2003-2004 GMC SAVANA

DASH DISASSEMBLY INSTRUCTIONS

1. Starting from the bottom, carefully pry the trim bezel from around the radio.
2. Remove 3 (three) bolts, remove antenna lead and harnesses.
3. Remove the radio.

DIN MOUNT INSTALLATION

1. Insert DIN sleeve from your new radio into the opening of the installation kit.
2. Depress the tabs from the inside of sleeves to secure sleeves to the installation kit.

Technical line drawing of a rectangular device with two internal compartments and ports (no text or symbols)

2000-2005 CHEVROLET IMPALA

DASH DISASSEMBLY INSTRUCTIONS

1. Remove 2 (two) screws from above the dash board.
2. Remove the fuse panel plate and remove 1 (one) screw from the rear.
3. Remove passenger fuse plate and remove 1 (one) screw from the rear.
4. Using a panel removal tool, drop the underdash cover and remove 2 (two) screw from the rear.
5. Remove 1 (one) screw from the left side trim, tilt steering wheel column down, and pry off trim bezel.

6. Remove 3 (three) screws, remove antenna lead and harnesses.

7. Remove the radio.

DIN MOUNT INSTALLATION

1. Insert DIN sleeve from your new radio into the opening of the installation kit.
2. Depress the tabs from the inside of sleeves to secure sleeves to the installation kit.

Simple line drawing of a rectangular device with two horizontal panels and mounting feet (no text or symbols)

2000-2005 CHEVROLET MONTE CARLO

DASH DISASSEMBLY INSTRUCTIONS

1. Remove 1 (one) screw from the glove box.
2. Remove the ignition switch collar with a flat blade.
3. Remove 2 (two) screws from under the steering wheel column panel, and remove cover.
4. Remove fuse access plate and 2 (two) screw from the rear.
5. Tilt steering wheel column all the way down, and remove trim bezel.
6. Disconnect any harnesses and remove bezel.
7. Remove the radio.

DIN MOUNT INSTALLATION

1. Insert DIN sleeve from your new radio into the opening of the installation kit.
2. Depress the tabs from the inside of sleeves to secure sleeves to the installation kit.

Pure technical line drawing of a rectangular device with internal components and mounting holes (no text or symbols)

2002-2004 CHEVROLET S-10

DASH DISASSEMBLY INSTRUCTIONS

1. Place key into the ignition, turn the key to the "ON" position.
2. Shift into first gear.
3. Remove 1 (one) screw from above the dash panel.
4. Remove 5 (five) screws from below the dash pane, and remove the pane.
5. Remove 2 (two) screws from the bottom of the trim bezel, and pry out.
   NOTE: When removing the bezel, use extreme caution not to break the hazard switch.
6. Remove 3 (three) screw, remove antenna leads and harnesses.
7. Remove the radio.

DIN MOUNT INSTALLATION

1. Insert DIN sleeve from your new radio into the opening of the installation kit.
2. Depress the tabs from the inside of sleeves to secure sleeves to the installation kit.

Technical line drawing of a device rear panel with buttons and connectors (no text or symbols)

2003-2006 CHEVROLET SSR

DASH DISASSEMBLY INSTRUCTIONS

1. Remove the aluminum trim panel that separate the dash, using a panel removal tool.
2. Remove 6 (six) screws from the radio dash panel.
3. Remove the dash pulling outwards.
   NOTE: Use extreme caution when near passenger side air bag. Bend the sides of the passenger air bag cover to release the right side of the dash.
4. Remove 3 (three) screws, remove antenna lead and harnesses.
5. Remove the radio.

DIN MOUNT INSTALLATION

1. Insert DIN sleeve from your new radio into the opening of the installation kit.
2. Depress the tabs from the inside of sleeves to secure sleeves to the installation kit.

Simple line drawing of a rectangular device with two horizontal panels and a handle (no text or symbols)

2003-2006 CHEVROLET TRAILBLAZER

DASH DISASSEMBLY INSTRUCTIONS

1. Remove 2 (two) screws from above the dash panel.
2. Remove 1 (one) screw from below the AC controls.
3. Remove 2 (two) screws from the lower dash panel above the brake panel.
4. Pry out bezel, disconnect harness and remove.
5. Remove 2 (two) screws, remove antenna lead and harnesses.
6. Remove the radio.

DIN MOUNT INSTALLATION

1. Insert DIN sleeve from your new radio into the opening of the installation kit.
2. Depress the tabs from the inside of sleeves to secure sleeves to the installation kit.

Technical line drawing of a rectangular electronic device with ports and connectors (no text or symbols)

2000-2005 CHEVROLET VENTURE

2000-2004 OLDSMOBILE SILHOUETTE

2000-2006 PONTIAC MONTANA

DASH DISASSEMBLY INSTRUCTIONS

1. Remove ashtray and remove 2 (two) screws from the rear.
2. Starting from the bottom, carefully pry the trim bezel from around the radio.
3. Remove 3 (three) screws, remove antenna lead and harnesses.
4. Remove the radio.

DIN MOUNT INSTALLATION

1. Insert DIN sleeve from your new radio into the opening of the installation kit.
2. Depress the tabs from the inside of sleeves to secure sleeves to the installation kit.

Technical line drawing of a rectangular device with two internal compartments and mounting holes (no text or symbols)

2004-2007 BUICK RAINIER

2002-2004 GMC ENVOY

2003-2008 ISUZU ASCENDER

DASH DISASSEMBLY INSTRUCTIONS

1. Remove 2 (two) screws from the front of the inside of the center console.
2. Remove the rubber pads, and remove the 4 (four) screws under there.
3. Remove the console insert.
4. Remove 2 (two) screws from the console cavity.
5. Remove rubber pad from the cup holder and remove 1 (one) screw from under there.
6. Remove 4 (four) screws from the sides of the carpeted panel under the radio and climate controls, pull down.
7. Pull the center console back, and down. Remove 2 (two) screws on the bottom of the trim bezel.
8. From the top, pry the bezel out, disconnect harness and remove.
9. Remove 3 (three) screws, remove antenna lead and harnesses.
10. Remove the radio.

DIN MOUNT INSTALLATION

1. Insert DIN sleeve from your new radio into the opening of the installation kit.
2. Depress the tabs from the inside of sleeves to secure sleeves to the installation kit.

Simple line drawing of a rectangular device with two panels and mounting holes (no text or symbols)

2003-2007 HUMMER H2

DASH DISASSEMBLY INSTRUCTIONS

1. Remove 4 (four) screws from center console lid hinge.
2. Remove Torx lock nut that holds the Shift lever, and slide shift lever off.
3. Pop up gear indicator plate with a panel removal tool
4. Remove 2 (two) screws at the bottom of the trimbezel.
5. Remove 2 (two) screws from trim bezel.
6. Pry out trim bezel, disconnect harness and remove.
7. Remove 3 (three) screws, remove antenna lead and harnesses.
8. Remove the radio.

Simple line drawing of a rectangular device with two horizontal panels and a side panel, no text or symbols present.

DIN MOUNT INSTALLATION

1. Insert DIN sleeve from your new radio into the opening of the installation kit.
2. Depress the tabs from the inside of sleeves to secure sleeves to the installation kit.

2002-2004 OLDSMOBILE BRAVADA

DASH DISASSEMBLY INSTRUCTIONS

1. Remove rubber covers in the arm rest.
2. Remove 6 (six) screws.
3. Shift gear into first, and pull console up.
4. Remove 2 (two) screws from bottom of center dash panel.
5. Pull center dash away.
6. Remove 3 (three) screws, remove antenna lead and harnesses.
7. Remove the radio.

Technical line drawing of a rectangular device with two panels and a handle (no text or symbols)

DIN MOUNT INSTALLATION

1. Insert DIN sleeve from your new radio into the opening of the installation kit.
2. Depress the tabs from the inside of sleeves to secure sleeves to the installation kit.

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 Carlo	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