GMC IL-GM3 Instruction Manual

Courtesy of:DiscountCarStereo.com
IL-GM3
Quick start installation Guide
for GM CLASS II Radios with no external device
Created: January 16, 2017
Revised October 3, 2018

Introduction:
Introduction:Introduction:
Introduction:
If you are loo ing for an easy an effective way of connecting and
listening to your Apple lightning device you should consider the iL-
GM3.
..
. The iL-GM3 will play
play play
play and
andand
and charge
chargecharge
charge any Apple Lightning device
including iPhone 5-X, iPod Touch (5G), iPod Nano (7G), iPad (4G),
iPad Mini (1G), iPad Mini with Retina etc. The iL-GM3 wor s on the
CD Changer port of select 2000-09 GM Class II Radios to provide the
best possible sound on the car spea er. Keep in mind
Keep in mind Keep in mind
Keep in mind any
any any
any factory
factory factory
factory
option
optionoption
option connected to this port
connected to this portconnected to this port
connected to this port (e
(e(e
(e.
..
.g
gg
g. CD Changer, XM
. CD Changer, XM . CD Changer, XM
. CD Changer, XM etc.) must
etc.) must etc.) must
etc.) must
be disconnected
be disconnectedbe disconnected
be disconnected.
Installation:
Installation:Installation:
Installation:
1. Remove Radio from dashboard to gain access to connectors.
(Vehicle specific radio removal instruction are not part of
this guide, but available upon request)
2. If present, disconnect 12-pin factory plug from Radio (See
Fig. 1 & 2
Fig. 1 & 2Fig. 1 & 2
Fig. 1 & 2)
Fig. 1
Fig. 1Fig. 1
Fig. 1
12-pin Plug
Fig. 2
Fig. 2Fig. 2
Fig. 2
GM Class II Radio connectors
3. Connect 12-pin plug removed in step 2 to 12-pin (gray)
connector on installation harness (See Fig.
See Fig. See Fig.
See Fig. 3
33
3)
))
)
If there was no 12-pin plug on radio, go to step 4.
Fig.
Fig. Fig.
Fig. 3
33
3
Installation harness
4. Connect 12-pin plug (See. Fig.
. Fig. . Fig.
. Fig. 3
33
3) from installation harness
to 12-pin connector on Radio vacated in step 2
5. Connect 22-pin Molex plug from installation harness (See
Fig. 3
Fig. 3Fig. 3
Fig. 3) to 22-pin connector on Module (See Fig. 4
Fig. 4Fig. 4
Fig. 4)
Fig. 4
Fig. 4 Fig. 4
Fig. 4
22-pin Molex connector
6. They are two switch settings for GM:
1. Dip switches 3 & 8
3 & 8 3 & 8
3 & 8 must be set to “ON” (See Fig. 5
Fig. 5Fig. 5
Fig. 5)
2. If radio does not recognize adapter, disconnect 22-pin
plug from module and set dip switches 1, 3, & 8 to “ON”.
Reconnect module and re-test.
Warning:
Warning:Warning:
Warning: Dip switch changes must be performed while
module is disconnected from harness.

Fig. 5
Fig. 5Fig. 5
Fig. 5
dip-switches
7. Connect yellow wire on installation harness to a 12V
constant (battery) source. This is available at cigar lighter
plug and elsewhere. Ma e sure the line is free of engine
noise .
8. Connect Blac wire to Ground (Ma e sure ground wire is
free or noise or interference)
9. Connect 8-pin DIN on Lightning adapter able to 8-pin DIN
input on Module. (See Fig. 6
Fig. 6Fig. 6
Fig. 6)
Fig. 6
Fig. 6Fig. 6
Fig. 6
8-pin DIN input
10. Carefully route Lightning cable (See Fig.
Fig. Fig.
Fig. 7
77
7) to desired
mounting location on dashboard, glove box, console etc.
within 4-5 ft. of Radio. Use cau
Use cauUse cau
Use caution to not cut, pinch or
tion to not cut, pinch or tion to not cut, pinch or
tion to not cut, pinch or
crimp the cable during this step.
crimp the cable during this step.crimp the cable during this step.
crimp the cable during this step.
11. Securely install cable in a location away from heat, humidity,
moving parts, or sharp metal objects. Damage to lightning
Damage to lightning Damage to lightning
Damage to lightning
plug may occur if subject to abuse.
plug may occur if subject to abuse.plug may occur if subject to abuse.
plug may occur if subject to abuse.
Fig.
Fig. Fig.
Fig. 7
77
7
Apple Lightning plug
T
TT
Test Operation:
est Operation:est Operation:
est Operation:
1. Connect Lightning Plug to Apple device and turn Radio “ON”
2. Press “TAPE/AUX
TAPE/AUXTAPE/AUX
TAPE/AUX” OR “CD/AUX
CD/AUXCD/AUX
CD/AUX” button to enter
CD/AUX Mode. If radio fails to enter aux mode, go to step
6 of installation section , disconnect module from power, try
dip switch setting #2
3. Apple device will begin charging
4. Select music trac on Apple device
Warning!
Warning!Warning!
Warning!
Playlist and Trac selection is *NOT* possible from the
COMAND 2.0 Radio. You must use the Audio device built-in
controls to access and select music files.
5. Selected trac will now be heard on car spea ers.
6. Use radio volume control to set playbac level
7. If successful go ahead and Reinstall Radio.

F
FF
Frequent
requentrequent
requent asked questions
asked questionsasked questions
asked questions
1. Does the
Does the Does the
Does the iL
iLiL
iL-
--
-GM3
GM3GM3
GM3 wor in vehicles with a 6
wor in vehicles with a 6wor in vehicles with a 6
wor in vehicles with a 6-
--
-CD Changer radio (the
CD Changer radio (the CD Changer radio (the
CD Changer radio (the
changer is built
changer is builtchanger is built
changer is built-
--
-into radio
into radiointo radio
into radio)
) )
)
YES
YESYES
YES;
;;
; but radio must have a “TAPE/AUX” or “CD/AUX” button on
faceplate
2. Does this wor in Bose systems
Does this wor in Bose systemsDoes this wor in Bose systems
Does this wor in Bose systems
YES
YESYES
YES; wor s in Bose and Non-Bose applications
3. I have both an external CD Changer and XM,
I have both an external CD Changer and XM, I have both an external CD Changer and XM,
I have both an external CD Changer and XM, do I need to
do I need to do I need to
do I need to
disconnect anything for the
disconnect anything for the disconnect anything for the
disconnect anything for the iL
iLiL
iL-
--
-GM
GMGM
GM3 to wor
3 to wor3 to wor
3 to wor
YES
YESYES
YES;
; ;
; XM or external CD Changer must be disconnected. Purchase the
AUX-GM3 to retain XM or CD Changer.
4. I have tried both switch settings, but radio does not
I have tried both switch settings, but radio does not I have tried both switch settings, but radio does not
I have tried both switch settings, but radio does not recognize the
recognize the recognize the
recognize the
module. Can you help?
module. Can you help?module. Can you help?
module. Can you help?
If vehicle has a Class II Radio with “TAPE/AUX” or “CD/AUX” button
and not recognizing the module, then either the module is defective OR
radio has not been programmed in which case you will need to have a
GM dealer enable this feature. (Tech II)
5. If in the future I decide to remove the
If in the future I decide to remove the If in the future I decide to remove the
If in the future I decide to remove the iL
iLiL
iL-
--
-GM3, will I have any
GM3, will I have any GM3, will I have any
GM3, will I have any
troubles with the wiring?
troubles with the wiring?troubles with the wiring?
troubles with the wiring?
NO;
NO; NO;
NO; the installation harness does not interfere with factory wiring
integrity and once disconnected, everything will wor as it did prior.
** Remote CD Changer refers to optional Changer installed in lower dash, center
armrest, hatch, trun etc. (external or remote Changer is not built-into head unit)
Call 804-717-5717 or email [e-mail]
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