Installation instructions for part 99-3018
Table of Contents
Cadillac CTS 2008-2015
99-3018
Dash Disassembly...............................................2-4
Kit Preparation........................................................ 5
Kit Assembly
–. ISO DIN radio provision with pocket....................... 6
– ISO DDIN radio provision....................................... 6
Axxess Interface Installation............................7-11
KIT FEATURES
• ISO DIN radio provision with pocket
• ISO DDIN radio provision
• 99-3018HG - gloss black
99-3018S - silver
REV. 12/30/2015 INST99-3018
KIT COMPONENTS
• A) Radio trim panel • B) Radio brackets • C) Pocket • D) Upper dash trim panel (for navigation models) • E) (2) Plastic washers
• F) (4) #8 x 3/8” Phillips screws • G) (2) Metal clips • H) (2) Copper threaded inserts • I) Axxess interface and wiring harness (not shown)
A
B
C
D
E
G
F
H
WIRING & ANTENNA CONNECTIONS (sold separately)
Wiring Harness: • Included Antenna Adapter: • 40-EU10
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TOOLS REQUIRED
• Panel removal tool • 7mm socket wrench
• T-10 Torx driver • Cutting tool • Phillips screwdriver
CAUTION: Metra recommends disconnecting the negative battery
terminal before beginning any installation, unless the vehicle
manufacturer recommends against so. Please check with your
local Dealership for more information. All accessories, switches,
climate controls panels, and especially air bag indicator lights
must be connected before reconnecting the battery or cycling
the ignition. Also, do not remove the factory radio with the key
in the on position, or the vehicle running. It would be best to
remove the key from the ignition and then wait a few seconds
before removing the factory radio.
© COPYRIGHT 2015 METRA ELECTRONICS CORPORATION
99-3018
Dash Disassembly
1. Remove the left and right shifter
side trim panels. (Figure A)
2a. Auto transmission vehicles:
Unclip the shifter trim (the boot
and knob will remain in place).
(Figure B)
2b. Manual transmission vehicles:
Unclip the shifter trim and pull
straight up on the shift knob to
remove the knob and trim as one
unit (this requires a lot of force,
do not twist the knob or the
locking tab inside the shift knob
will break). (Figure C)
(Figure A)
(Figure B)
2
(Figure C)
99-3018
Dash Disassembly
3. Remove the dash trim on both
sides of the radio panel.
(Figures D, E)
4. Unclip the top dash radio trim
(non-navigation models only).
(Figure F)
Note: There will be a strap
connected to this panel that
cannot be removed until
step 5 is performed. After step 5,
remove (1) 7mm screw securing
the strap and then remove
the panel.
(Figure D)
(Figure E)
3
(Figure F)
99-3018
Dash Disassembly
6. Navigation models only: With
the radio/climate control panel
still connected, cycle the key to
accessory, and then press the
button on the upper left of the
panel to raise the navigation
screen. Remove (3) 7mm screws
holding the screen into the dash,
unplug and remove the screen,
turn the key to the off position,
and then remove the key from the
ignition. Now it is safe to unplug
and remove the radio/climate
control panel. Failure to follow
this step properly will result in
the airbag light illuminating in
the instrument cluster. (Figure H)
5. Remove (2) 7mm screws from the
bottom of the radio/climate control
panel and unplug & remove the
panel (Figure G)
(WARNING!!! Do not unplug the
panel if the vehicle has factory
navigation, continue to step 6).
(Figure G)
7. Remove (4) 7mm screws from the
radio chassis, and then unplug and
remove the radio chassis from the
dash. (Figure I)
Continue to Kit Preparation
(Figure H)
4
(Figure I)
99-3018
Kit Preparation
1. Remove (4) Phillips screws to
remove the ashtray/pocket from
the bottom of the radio/climate
control panel. (Figure A)
4. Cut the radio/climate control panel
clock support area as shown in
the diagram. Vent removal is
optional. (Figure C)
2. Remove (4) T-10 Torx screws and
(16) Phillips screws to remove the
radio/climate controls, and radio/
climate bezel from the panel.
(Figure B)
5. Using the factory hardware, secure
the radio trim panel and the factory
radio/climate controls to the
modified factory panel. Use the (2)
supplied plastic washers on the top
two mounting positions.
(Figures D and E)
(Figure A)
Note: The radio/climate
bezel will not be used in this
installation.
3. Remove (4) Phillips screws to
remove the upper screen
trim panel.
Continue to Kit Assembly
(Figure D)
(Figure B)
Remove shaded area
(Figure C)
(Figure E)
5
99-3018
Kit Assembly
ISO DIN radio provision with pocket
ISO DDIN radio provision
1. Attach the pocket to the radio
brackets using the (4) #8 x 3/8”
Phillips screws supplied.
(Figure A)
1. Attach the radio brackets to the
radio using the screws supplied
with the radio. (Figure A)
Continue to Axxess Interface
Installation
2. Remove the metal “DIN” sleeve
and trim ring from the
aftermarket radio.
3. Attach the radio brackets to the
radio using the screws supplied
with the radio. (Figure B)
(Figure A)
(Figure A)
Continue to Axxess Interface
Installation
(Figure B)
6
99-3018
Axxess Interface Installation
Connections to be made
Attention! This interface will work with models that are either factory
amplified, or non-amplified. Please follow the instructions carefully for your
model vehicle. Failure to do so will result in either no sound, or low sound.
If you are unsure if your vehicle is factory amplified or not, please contact
your local dealership.
FEATURES
• Provides accessory power (12-volt 10-amp)
• Retains R.A.P. (retained accessory power)
• Used in amplified, or non-amplified systems
• Provides NAV outputs (parking brake, reverse, and speed sense)
• Prewired ASWC-1 harness included (ASWC-1 sold separately)
• High level speaker input
• Retains balance and fade
• Micro “B” USB updatable
For models with a factory amplifier:
From the 16-pin harness with stripped leads to the aftermarket radio:
• Connect the (2) Red wires to the accessory wire.
• Connect the Blue/White wire to the amp turn on wire. (This wire must be
connected to hear sound from the factory amplifier.)
• Connect the Orange/White wire to the illumination wire. (If the aftermarket
radio has no illumination wire, tape off and disregard this wire.)
INTERFACE COMPONENTS
• Axxess Interface
• 16-pin harness with stripped leads
• 3018 harness with stripped leads
• Resistor pad harness
• Connect the Brown wire to the mute wire. If the radio has no mute wire, tape
it off and disregard it.
• Connect the Gray wire to the right front positive speaker output.
• Connect the Gray/Black wire to the right front negative speaker output.
• Connect the White wire to the left front positive speaker output.
• Connect the White/Black wire to the left front negative speaker output.
TOOLS REQUIRED
• Wire cutting tool • Crimping tool • Tape
• Connectors (example: butt-connectors, bell caps, etc.)
• Tape off and disregard the Purple, Purple/Black, Green, and Green/Black
wires, they will not be used in this application.
Continued on the next page
7
99-3018
Connections to be made
12-pin pre-wired ASWC-1 harness
The following (3) wires are for multimedia/navigation radios that
require these wires.
• This harness is to be used in conjunction with the optional ASWC-1 (not
included) to retain steering wheel controls. If the ASWC-1 is not being used,
disregard this harness. If it will be used, please refer to the ASWC-1 instructions
for radio connections and programming.
• Connect the Blue/Pink wire to the VSS/speed sense wire (if applicable).
• Connect the Green/Purple wire to the reverse wire (if applicable).
• Connect the Light Green wire to the parking brake wire (if applicable).
Note: Disregard the harness that comes with the ASWC-1.
From the 3018 harness to the aftermarket radio:
• Connect the Red wire to the accessory wire.
• Connect the Black wire to the ground wire.
• Connect the Yellow wire to the battery wire.
• The Black/Yellow wire will be discussed in the OnStar Level
adjustment section.
Note: The relay attached to the vehicle harness is only for audible turn signal clicks.
No extra steps are required to retain this feature, so leave the relay as-is.
• If the AUX-IN jack in the console is desired to be used, connect the Red and
White RCA jacks to the audio AUX-IN of the aftermarket radio (if equipped).
Note: There is an 8-pin harness connected to a small heat shrink wrapped circuit
board: DO NOT DISCONNECT! The circuit board must remain connected to allow
proper operation of the kit.
• Disconnect the (2) 4-pin connectors that have Gray, Gray/Black, White, and
White/Black wires, and then connect the resistor pad harness in place.
• Connect the Green wire to the left rear positive speaker output.
• Connect the Green/Black wire to the left rear negative speaker output.
• Connect the Purple wire to the right rear positive speaker output.
• Connect the Purple/Black wire to the right rear negative speaker output.
8
99-3018
Connections to be made
For models without a factory amplifier:
From the 3018 harness to the aftermarket radio:
From the 16-pin harness with stripped leads to the aftermarket radio:
• Connect the Black wire to the ground wire.
• Connect the (2) Red wires to the accessory wire.
• Connect the Yellow wire to the battery wire.
• Connect the Blue/White wire to the amp turn on wire. (This wire must be
connected to hear sound from the factory amplifier.)
• The Black/Yellow wire will be discussed in the OnStar Level
adjustment section.
• Connect the Orange/White wire to the illumination wire. (If the aftermarket radio
has no illumination wire, tape off and disregard this wire.)
• If the AUX-IN jack in the console is desired to be used, connect the Red and
White RCA jacks to the audio AUX-IN of the aftermarket radio (if equipped).
• Connect the Brown wire to the mute wire. If the radio has no mute wire, tape it
off and disregard it.
• Leave connected the (2) 4-pin connectors that have Gray, Gray/Black, White,
and White/Black wires.
• Connect the Gray wire to the right front positive speaker output.
• Connect the Gray/Black wire to the right front negative speaker output.
• Cut the resistors off from the Green, Green/Black, Purple, Purple/Black wires
right below the heat shrink.
• Connect the White wire to the left front positive speaker output.
• Connect the Green wire to the left rear positive speaker output.
• Connect the White/Black wire to the left front negative speaker output.
• Connect the Green/Black wire to the left rear negative speaker output.
• Tape off and disregard the Purple, Purple/Black, Green, and Green/Black wires,
they will not be used in this application.
• Connect the Purple wire to the right rear positive speaker output.
• Connect the Purple/Black wire to the right rear negative speaker output.
The following (3) wires are for multimedia/navigation radios that require these wires.
Continued on the next page
• Connect the Blue/Pink wire to the VSS/speed sense wire (if applicable).
• Connect the Green/Purple wire to the reverse wire (if applicable).
• Connect the Light Green wire to the parking brake wire (if applicable).
9
99-3018
Connections to be made
Installing the Interface
12-pin pre-wired ASWC-1 harness
With the key in the off position
• This harness is to be used in conjunction with the optional ASWC-1 (not
included) to retain steering wheel controls. If the ASWC-1 is not being used,
disregard this harness. If it will be used, please refer to the ASWC-1 instructions
for radio connections and programming.
• Connect the 16-pin harness with stripped leads into the interface.
• Connect the 3018 harness into the interface, and then into the vehicle.
• Make sure the 8-pin harness has the small circuit board still attached.
Note: Disregard the harness that comes with the ASWC-1.
• With all connections completed to the interface, radio, and vehicle, reconnect
the negative battery terminal.
• Connect the Red wire to the accessory wire.
Initializing the Interface
• Turn the key (or push-to-start button) to the ignition position and wait
until the radio comes on.
Note: The relay attached to the vehicle harness is only for audible turn signal clicks.
No extra steps are required to retain this feature, so leave the relay as-is.
Note: If the radio does not come on within 60 seconds, turn the key
to the off position, disconnect the interface, check all connections,
reconnect the interface, and then try again.
Note: There is an 8-pin harness connected to a small heat shrink wrapped circuit
board: DO NOT DISCONNECT! The circuit board must remain connected to allow
proper operation of the kit.
• Turn the key to the off position, close all doors (allow the dome light to go
out to ensure no data communication is active), and then turn the key to the
accessory position. Test all functions of the installation for proper operation,
before reassembling the dash.
Note: If using the ASWC-1, connect it after you initialize the interface,
with the key in the off position.
10
99-3018
Adjusting the Interface
Final Assembly
Chime level adjustment
1. Secure the radio/bracket assembly into the dash using the factory hardware.
• With the vehicle on, turn it off and leave the keys in ignition.
Open the driver’s door; chimes will be heard.
2. Snap the radio trim panel over the radio, and then reassemble the dash in
reverse order of disassembly.
• Wait 10 seconds, and then with a small screwdriver, turn the potentiometer
clockwise to raise the chime level; counterclockwise to lower the chime level.
3. The upper dash trim panel is intended for use in NAV equipped vehicles only.
A factory version of this panel is also available from the dealership.
Note: The metal clips for the upper dash trim panel must be oriented per
Figure A or they will not engage properly.
• When the chime is at a desired level, remove the keys from the ignition.
This will lock the chime volume at its current level.
Note: If the vehicle did not have factory navigation, insert the (2) copper
threaded inserts into the empty upper radio mounting holes in the
dash cavity.
OnStar level adjustment
• Press the OnStar button to activate it.
• While OnStar is speaking, press the “Volume up” or “Volume down” buttons on
the steering wheel to raise or lower the OnStar level.
• If the vehicle does not come equipped with steering wheel controls, find the
Black/Yellow wire on the 22-pin harness.
• While OnStar is speaking, tap the Black/Yellow wire to ground. Once the
OnStar level is set, it will stay at that level until the Black/Yellow wire is
tapped to ground again.
(Figure A)
11
Installation instructions for part 99-3018
IMPORTANT
If you are having difficulties with the installation
of this product, please call our Tech Support line
at 1-800-253-TECH. Before doing so, look over
the instructions a second time, and make sure
the installation was performed exactly as the
instructions are stated. Please have the vehicle
apart and ready to perform troubleshooting
steps before calling.
KNOWLEDGE IS POWER
REV. 12/30/2015 INST99-3018B
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© COPYRIGHT 2015 METRA ELECTRONICS CORPORATION