Metra Electronics Axxess CLASSII-100 User manual

METRA. THE WORLD’S BEST KITS.™
© COPYRIGHT 2004-2011 METRA ELECTRONICS CORPORATION
1-800-221-0932 metraonline.com
INSTALLATION INSTRUCTIONS FOR PART CLASSII-100
REV. 8/20/2012 INSTCLASSII-100
• Cutting tool • Crimping tool • Tape • Connectors (example: butt-connectors, bell caps, etc.)
IGNITION TERMINALS
WIRE CUTTER
M3.5
M2.6
M3
M5
M4
ISO
6
2.5
1.5
TOOLS REQUIRED
CLASSII-100
CLASS II Interface
2000-up
INTERFACE COMPONENTS
KIT FEATURES
APPLICATIONS
See inside front cover
• Retains R.A.P. (retained accessory power)
• Used in amplified or non-amplified systems
• Retains chimes
• Provides NAV outputs (parking brake,
reverse, mute, V.S.S.)
• Built-in SWC (steering wheel control) interface
• 4-pin to 4-pin resistor pad harness
• 22-pin harness to 24 and 12-pin harness with stripped leads
• Retains OnStar/OE Bluetooth
• Adjustable volume for chimes and OnStar
• High level speaker input
• USB updatable
• Retains balance and fade
• Retains OE satellite (if equipped)

Applications
CLASSII-100
Caution: Metra recommends disconnecting the negative battery terminal before beginning any
installation. All accessories, switches, and especially air bag indicator lights must be
plugged in before reconnecting the battery or cycling the ignition.
Note: Refer also to the instructions included with the aftermarket radio.
BUICK
Allure 2005-2009
Century 2004-2005
Lacrosse 2005-2011
Rainier 2004-2007
Rendezvous 2002-2007
Terraza 2005-2008
CADILLAC
Escalade 2003-2006
Escalade EXT 2003-2006
CHEVROLET
Avalanche 2003-2006
Cavalier 2000-2005
Corvette 2005-up
Express 2003-2007
Impala 2000-2005
Malibu 2000-2003
Malibu classic 2004
Monte Carlo 2000-2005
Silverado 2003-2006
Silverado classic 2007
SSR 2003-2006
Suburban 2003-2006
Tahoe 2003-2006
Trailblazer 2002-2009
Uplander 2005-2008
Note: The CLASSII-100 is designed to and MUST be used with the GMOS-100i (sold separately).
Please refer to GMOS-100i for 16-pin connector instructions.
GMC
Envoy 2002-2009
Savana 2003-2007
Sierra 2003-2006
Sierra classic 2007
Yukon/XL/Denali 2003-2006
HUMMER
H2 2003-2007
H3 2006-2009
ISUZU
Ascender 2003-2008
I Series 2006-2008
OLDSMOBILE
Alero 2001-2004
Bravada 2002-2004
Intrigue 2002
Silhouette 2000-2004
PONTIAC
Aztec 2001-2005
Grand Am 2001-2005
Grand Prix 2004-2008
Sunfire 2000-2005
SAAB
9-7x 2005-2009
SATURN
Relay 2005-2009

CLASSII-100
Table of Contents
Connections to be made
–From the 22-way harness ................................................................................................. 4
–From the 24-way harness (amplified/non-amplified) ......................................................4-5
–From the 12-way harness ................................................................................................. 5
–Installing the GMOS-100 ..................................................................................................5
Programming the SWC ...................................................................................................... 6
–Programming the SWC, All Other Vehicles .........................................................................6
Testing the GMOS-100 ....................................................................................................... 7
Adjustments
– Chime Volume Adjustment ................................................................................................7
– Audio Level Adjustment .................................................................................................... 7
–OnStar Level Adjustment ..................................................................................................8
Manually Setting Radio Type ............................................................................................. 8
Remapping the SWC buttons .......................................................................................9-10
–Resetting or Forcing Auto Learn on the SWC ...................................................................10
XIA-LCD Screen (optional) ................................................................................................ 11
3

CLASSII-100
Connections to be made
4
1. From the 22-way harness:
Connect the 3.5mm jack to the aftermarket radio’s steering wheel control (SWC) input
(if equipped). Note: If using Eclipse, Kenwood, or select JVC radios use the supplied
female 3.5mm adaptor.
 • ForKenwoodandselectJVCradios:Connect the SWC wire (normally Blue/
Yellow) to the Brown wire of the ASWC. Isolate and tape the Brown/White wire,
it will not be used.
Some of the newer Kenwood radios will auto detect as a JVC. If this is the case, you
can use a 12k ohm resistor (included) in line between the Blue/Yellow and Brown
wire of the female 3.5mm jack during programming only. Or you can manually set
the radio type which is in the radio programming section of this manual.
 • ForEclipseradios:Connect the Eclipse SWC wires (Normally Brown and Brown/
Black) to the Brown and Brown/White wires of the ASWC. Brown goes to Brown
and Brown/White goes to Brown/Black. Sometimes this is reversed, so reverse the
wires if needed.
 • ForMetraOEradios:Connect the SWC Key 1 wire (Gray) to the Brown wire of the
ASWC female 3.5 adapter.
• Forallotherradios, plug in the male 3.5mm connector of the ASWC into the
back of the aftermarket radio, designated for an external SWC control interface.
Please refer to the aftermarket radios manual if you are in doubt where the 3.5mm
connector of the ASWC goes.
• The Black/Yellow wire will be discussed later on in the instructions.
2. From the 24-way harness:
• Connect the Black wire to the ground wire of the aftermarket radio.
• Connect the Yellow wire to the constant wire of the aftermarket radio.
• If the vehicle is amplified disconnect the 4-pin harness located between the 30-way
and 22-way connector and connect the supplied 4-pin to 4-pin resistor pad. If the
vehicle is not amplified connect the two 4-pins for the 30 and 22-way together.
Continue on next page

5
CLASSII-100
Connections to be made
For amplified systems:
• Connect the Violet wire to the right rear positive wire of the aftermarket radio.
• Connect the Violet/Black wire to the right rear negative wire of the aftermarket radio.
• Connect the Green wire to the left rear positive wire of the aftermarket radio.
• Connect the Green/Black wire to the left rear negative wire of the aftermarket radio.
For non-amplified systems:
• Cut the resistors from the Green, Green/Black, Purple, Purple/Black right below
the heat shrink.
• Connect the Violet wire to the right rear positive wire of the aftermarket radio.
• Connect the Violet/Black wire to the right rear negative wire of the aftermarket radio.
• Connect the Green wire to the left rear positive wire of the aftermarket radio.
• Connect the Green/Black wire to the left rear negative wire of the aftermarket radio.
• The DIN plug is to be connected to the optional XIA-LCD screen if satellite or RSE
is being retained.
3. From the 12-way harness:
• Connect the Blue/Pink wire to the aftermarket radios VSS (if populated on
factory side).
• Connect the RCA’s to the AUX-in on the aftermarket radio (if equipped).
Installing the GMOS-100
1. With all the connections completed, plug the 24, 22, and 12-pin harnesses
into the GMOS-100.
2. Plug the 24 and 12-pin GM harness into the vehicle side harness, and plug the
aftermarket radio harness into the aftermarket radio.
3. Reconnect the negative battery terminal.
Cycle the key by turning the ignition on for 30 seconds, then back off, then back on
again to test the radio.

In Class II vehicles, there are two ways to program the SWC. If your vehicle is not on the
following list please refer to the “All Other Vehicle” section.
CLASSII-100
6
Programming the SWC
BUICK
Rainer 2004-2007
CADILLAC
Escalade (all models) 2003-2006
CHEVROLET
Avalanche 2003-2006
Caviler 2000-2005
Silverado (classic) 2007
Silverado 2003-2006
SSR 2003-2006
Suburban 2003-2006
Tahoe 2003-2006
Trailblazer 2002-2009
GMC
Envoy 2002-2009
Sierra (classic) 2007
GMC continued
Sierra 2003-2006
Yukon (all models) 2003-2006
HUMMER
H2 2003-2007
ISUZU
Ascender 2003-2005
OLDSMOBILE
Bravada 2002-2004
PONTIAC
Sunfire 2000-2005
SAAB
9-7X 2005-2007
1. Turn on the ignition.
2. Turn on the radio.
3. The LED on the GMOS-100 will begin to blink rapidly.
4. Turn on the aftermarket radio.
5. Tap volume up until radio responses.
All Other Vehicles
1) Turn “On” the ignition.
2) The LED will go on solid.
The following buttons must be pressed in order:
• Volume Up, Seek Up, Band, PTT/Mute, Fan Up (each button pressed will be
acknowledged with the LED on steadily).
• If any of the above buttons are not present, substitute with Volume Up.
For example, if a vehicle does not Band and Fan Up, you would press Volume Up,
Seek Up, Volume Up, PTT/MUTE, Volume Up.
• After you have pressed all five buttons, the LED will turn “Off”.

Testing the GMOS-100
7
CLASSII-100
• Turn the ignition “On”. Then turn the aftermarket radio “On”.
• Press the OnStar button, the radio should turn “Off” (radio will mute if mute wire is
connected) and you should hear OnStar.
• Push the OnStar cancel button and the radio should come back “On”.
Chime Volume Adjustment
1) With the car on, shut off car and leave keys in ignition. Open the car door and leave
it open. Chimes will be heard.
2) Wait 10 seconds, then with a small screwdriver adjust the potentiometer fully
counterclockwise (all the-way left), then clockwise to raise chime level and
counterclockwise to lower the chime level.
3) When the volume is at the desired level, remove the keys from the ignition.
This will lock the chime volume at its current level.
Audio Level Adjustment
1) Start your vehicle and turn on the radio having audio playing.
2) Turn your aftermarket radio’s volume up ¾ of the-way.
3) With a small screwdriver adjust the potentiometer clockwise to raise the audio level
and counterclockwise to lower the audio level.
4) Once at desired level your audio adjustment is complete.
Continue on next page

OnStar Level Adjustment
• To adjust the OnStar volume level find the Black/Yellow wire on the 16-pin harness.
• Push the blue OnStar button, while the voice is speaking tap the Black/Yellow
wire to ground.
• Once the volume is set it will stay at that volume until the Black/Yellow wire is
tapped to the ground again.
This can be set during installation and then left alone. If adjustment is desired, the
user may also tap “Volume Up” or “Down” on the steering wheel (if equipped) to
adjust the OnStar level.
8
CLASSII-100
If the LED flashes do not match the radio you have connected, you must manually program
the ASWC to tell it what radio it is connected to.
1. To manually program the aftermarket radio turn “On” the ignition. Then press and hold
the “Volume Down” button on the steering wheel control until the LED goes solid red and
then release the “Volume Up” button.
2. Using the listing below press the “Volume Up” button the number of times (number is
to the left of the radio name) needed to program the correct radio type:
3. Press and hold the “Volume Down” button for 5 seconds to finish programming. The
LED will then go off.
4. After a few seconds, the LED will then blink the number of times corresponding to the
radio type. This number should be the same number that the “Volume Up” button had
been pressed.
1 Eclipse
2 Kenwood
3 Clarion “Type 1”
4 Sony/Dual
5 JVC
6 Jensen/Pioneer
7 Alpine
8 Visteon
9 Valor
10 Clarion “Type 2”
11 Metra OE
Continue on next page
Manually Setting Radio Type

CLASSII-100
9
Remapping the SWC buttons
Let’s say you have the GMOS-100 programmed to your vehicle and your radio and you want
to change the button assignment for the steering wheel controls. For instance, if you would
like the “Seek Up” button to be assigned as “Mute”.
Note, before beginning:
• The GMOS-100 must have detected the vehicle and radio it is attached to before
you can remap any buttons.
• You can only start the remapping of the steering wheel controls process after
20 seconds of turning the ignition key “On”. If you wait longer than the 30 seconds
you will have to turn the ignition off then back on again.
• Within the first 20 seconds if any button other then “Volume Up” or “Volume Down”
is pushed, the remapping process will stop.
• If during the remapping process no button is pushed for 30 seconds the remapping
process is aborted and the original settings are reset.
Beginning the remapping process:
1. Ideally having the GMOS-100 visible is recommended since you can see the
LED flashes to confirm button recognition.
2. Turning off the radio is recommended.
3. After seconds of turning the ignition “On” press and hold down the “Volume Up” button
for at least 25 seconds.
4. The LED will light up solid red. Release “Volume Up” and the LED will go out.
“Volume Up” has now been programmed.
5. Next, continue the process of remapping buttons to the SWC in order of the list below.
If you want to skip a command press the “Volume Up” on the steering wheel, this will
tell the GMOS-100 to skip the command and go to the next one.
1 Volume Up
2 Volume Down
3 Seek Up/Next
4 Seek Down/Prev
5 Source/Mode
6 Mute
7 Preset Up
8 Preset Down
9 Power
10 Band
11 Play/Enter
12 PTT (Push To Talk)
13 On Hook
14 Off Hook
15 Fan Up
16 Fan Down
17 Temp Up
18 Temp Down

CLASSII-100
10
Remapping the SWC buttons
Note: Not all radios will have all of these commands. Please refer to the radio’s owners
manual for specific commands recognized by that radio.
For instance, the next command to be mapped is the “Volume Down” command. Let’s
say you want the “Mode” button on your steering wheel to be the “Volume Down”
command. Hold down the “Mode” button till the LED lights up solid red and then
release it. Now the “Mode” button on the steering wheel is “Volume Down”.
6. After the last button is programmed on your steering wheel (you do not have to go
through the whole list), hold down the “Volume Up” button for at least 10 seconds then
the LED will go out.
----- OR -----
After the 18th button is programmed and/or skipped the LED will go out and remapping
is completed.
If after remapping the SWC and you want to revert the SWC back to its original settings
follow these steps below:
Resetting or Forcing Auto Learn on the SWC
1) Within the first 20 seconds of turning the ignition on. Press and hold down the
original “Volume Up” button for at least 25 seconds.
2) The LED will blink rapidly.
3) Release the “Volume Up” button and wait until the LED goes on solid.
4) After the LED goes off the original steering wheel control settings will be restored.