Discount Car Stereo A2DIY-GM1 User manual

Courtesy of: DiscountCarStereo.com
Serving the internet community since 1995
Created March1, 2017
Revised: January 6, 2024

PRODUCT SAFETY & DISCLAIMER
READ ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING, FAILURE TO DO SO MAY CAUSE
PERSONAL INJURY OR DAMAGE TO PRODUCT AND/OR PROPERTY
▪This installation guide is provided as a GENERAL installation guide, some vehicles vary and
may require additional steps. We do not accept responsibility for third party labor charges
or modifications. Exercise due-diligence when installing this product.
▪We do not accept any responsibility for vehicle damage or personal injury resulting from
the installation of this product.
▪Careless installation and operation can result in equipment damage
Requirement
1995-05 RADIOS With “TAPE/AUX”button on faceplate and
2000-05 radios with “CD/AUX”Button on faceplate
Introduction
Many GM owners looking to add Bluetooth without changing the original radio will
be pleased to find the A2DIY-GM1. This new release features Bluetooth Hands-
Free and music streaming from any smartphone or Tablet with A2DP and
Hands-Free profile. In addition to Bluetooth, a 3.5mm input jack is included to
connect and play portable audio devices (e.g., Mp3 Players, satellite radio kit,
iPods etc.) and optional USB type-C charging port which automatically
determines the amount of current required to charge device while on the road
and new media remote from which users may change tracks, volume, switch
between sources, end phone calls and more while keeping eyes on the road.
Keep the radio and car you love while enjoying Bluetooth features only
available on newer cars. For more details, see Frequently Asked question at
the end of this guide.
Installation
1. Remove radio from dash (Vehicle specific radio removal procedure is
not part of this guide but available upon request)
2. Vehicles equipped with CD changer, separate unit or Bose system:
Disconnect 9-pin plug from radio (See. Fig. 1).
Note: The radio 9-pin port will be empty if none of the aforementioned
factory options are present.
Fig. 1
Radio 9-pin port
3. Connect 9-pin plug (black) from install harness (See Fig. 2) to radio 9-
pin port (See Fig. 1)
Fig. 2
installation harness

4. If vehicle is equipped with “BOSE”; re-connect factory 9-pin plug
(removed from radio in step 2) to 9-in connector (white) on install
harness
Separate player (single CD or Tape player in lower dash); remain
disconnected. Install harness 9-pin connector (white) remains empty
except if vehicle has BOSE.
5. Auxiliary input connection: Connect supplied 3.5mm audio cable (See
Fig. 4) to module “AUX” jack. Route cable other end to front of dash or
wherever Aux device will reside (within 3 ft.) This step is optional.
Fig. 4
6. Install microphone (See Fig. 5) to vehicles visor or headliner using
included visor clip (See Fig. 6).
Fig. 5
Microphone
Fig. 6
Visor clip
7. Carefully route microphones 3.5mm plug down pillar and behind the
dash and plug into module “MIC” input jack (See Fig. 3)
Fig. 7

Optional USB type-C charging kit (charge only)
Optional USB type-C charger can be added to the A2DIY-C5CD Kit. Should you
decide to add it, we suggest one of 3 installation options:
A. Flush to dash/panel requires drilling a ¾” hole
B. Flush with support bracket (Mount terminal wherever your installation
demands without drilling)
C. Freestanding- (default)
A. Flush to dash/panel (drilling required)
1. Drill a ¾” hole in the dash/panel using a step drill bit or equivalent
(See Fig. 10)
Fig. 10
Step drill bit
2. Insert cable through hole created in step 1
3. On module installation harness locate charger Fig. 11)
4. Connect cable from step 2 to charger USB type C- port
Fig. 11
5. Snap USB head to opening until flush with surface (See Fig. 12)
Fig. 12
Tuck and secure any extra wire from moving parts and test operation
B. Bracket Mount (No drilling)
1. Locate a flat surface at location of choice within 3.2 ft. of module and
mount support bracket (See Fig. 14) to surface screws (included).

Fig. 14
mounting bracket
2. Insert cable through hole in bracket (See Fig. 15) and connect to
charger (See Fig. 11)
Fig. 15
3. Snap USB head to bracket opening until flush (See Fig. 16)
Fig. 16
4. Tuck and secure any extra wire away from moving parts and test
operation ( See Bluetooth Pairing and Connection )
Media remote control
Pairing: Ensure Bluetooth is enabled on your device (e.g., Smartphone/Tablet
etc.) scan/search for available devices and select BT009 from list. Media
remote can be paired with multiple devices but can only operate one at a time.
Fig. 18
Installation:
Attach remote to steering wheel (includes holder) or dashboard to safely and
conveniently control multi-media functions even when smartphone is out of
reach.
Charging:
Media button has a built-in rechargeable 200mAH battery which may last up to
10 days. Use supplied USB cable to connect media button to charging source.
Reaches full charge after 2 hours.

Remote control operation:
Once paired with smartphone/Tablet, users may perform the following functions
on iOS devices with Bluetooth 3.0 and later and Android 4.0 or later.
These remote functions do not apply to the Corvette radio.
Bluetooth pairing and connection
This process must be carried out upon initial install after which the A2DIY-GM1
will automatically reconnect with paired phone upon entering vehicle.
1. Go to smartphone settings and enable Bluetooth
2. Smartphone will automatically begin searching for devices.
3. Select Bluetooth name below, tap “Connect”
Note: Supports multiple phone pairings but connects to one phone at a time.
If for some reason phone fails to pair, ensure no other has paired to module in
such case you must unpair that device in other to pair another.
Warning: Caller ID, song text is not shown on radio screen. Operate
Bluetooth device via media button, VR (voice recognition) or device built-in
controls. Use radio buttons to adjust playback level and tone controls
(e.g., Bass/treble etc.)

Bluetooth operation
1. Turn ignition and radio “ON”
2. Press “CD/AUX”or “TAPE/AUX”button on radio
3. Launch smartphone music streaming application
4. Set smartphone media volume to 80% and raise radio volume knob to set
playback level. If distorted, lower audio device volume.
5. Use media remote to change tracks, volume adjustment, pause, play on
smart device (e.g., smartphone) Not applicable to GM factory radios
6. Place test call
7. Press media button Pause/Play to answer/end call
8. Press media button Pause/Play to switch between CD changer or AUX
playback and streaming
9. If correct operation is confirmed go ahead and reinstall radio.
Notes:
1. On incoming calls, ring tone plays through car speakers
2. AUX and or CD changer has playback priority.
3. *Media button does not control AUX device nor GM radio functions. Use
AUX device built-in buttons for music selection and controls.
Bluetooth comparison chart
Use chart below to compare features:
Feature
BLU-GM1
A2D-GM1
A2DIY-GM1
Slave unit required/retained
x
✓
x
3.5mm AUX input
x
x
✓
USB charging port
x
x
**
Mute audio system
*
*
*
Hands-Free calls
x
x
✓
Music streaming
✓
✓
✓
Push-to-talk button
x
x
x
Multi-device pairing
✓
✓
✓
Media button/remote control
**
**
✓
* Radio must be in “Bluetooth”mode (AUX mode)
** Optional

Frequently asked questions
1. What’s the difference between BLU-GM1 and A2DIY-GM1?
The BLU-GM1 supports music steaming, the A2DIY-GM1 supports music
streaming, Hands-Free calls and Auxiliary input (3.5mm jack)
2. Does the A2DIY-GM1 work on all GM radios?
NO; Please read carefully as they are caveats.
Works on 1995-05 radios with “TAPE/AUX”button on faceplate and
2000-05 radios with “CD/AUX”button on faceplate. 1995-99 radios with
“CD/AUX”button on faceplate are NOT compatible unless vehicle also
has a separate tape player or single CD player in lower dash.
If the 1995-99 radio with “CD/AUX”button on faceplate is not
connected to a separate CD changer, Tape player or single CD player
(in lower dash), the A2DIY-GM1 will not function.
3. Can I control smartphone from radio buttons?
NO; use smartphone built-in controls and display or included media remote
control
4. Can I pair or save more than one device to the A2DIY-GM1?
YES; however only one connection is possible at a time. To pair with a
second device, you must disconnect/unpair first device.
5. Aux playback is interrupted when pressing phone buttons, is this
normal?
YES, playback is briefly paused when phone button is pressed.
6. After installing everything I get no sound. What could be wrong?
Your vehicle likely has a Bose system and the factory 9-pin plug was left
disconnected. Please proceed to installation step 4 (page 3) to resolve this
issue.
Disclaimer
• This product has no affiliation with GM.
• We’re not liable for misuse of this product.
•We recommend professional installation.
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