PAC RP5-GM11 Service manual

Radio Replacement & Steering Wheel Control Interface
with OnStar Retention for General Motors Vehicles
RP5-GM11
Pacific Accessory Corporation
Page 1
Rev: 5
Date: 050918
Introduction and Features
Important Notes
Wiring Connection Chart
Illustration / Schematic
The RP5-GM11 interface allows the replacement of a factory radio in select General Motors vehicles with Class II radios.
Using this interface will retain factory features such as OnStar, steering wheel controls (SWC), warning chimes, Rear
Seat Controls (RSC), Rear Seat Entertainment (RSE) and the BOSE amplier when the original radio is removed. The
RP5-GM11 also provides data bus driven outputs such as retained accessory power (RAP), vehicle speed signal (VSS),
illumination, reverse trigger and parking brake.
1.These instructions only apply to R.2.2.6.13 or later revisions. The revision info can be found on a small white sticker on the
interface and packaging.
2.The radio select rotary switch on the side of the interface must be adjusted to the proper radio setting before plugging the
interface into the vehicle (see next page for setting chart).
3.The interface comes pre-programmed for all of the vehicles factory SWC functions and does not require programming unless
you wish to re-assign the SWC functions to different buttons. The SWC can always be restored to default settings by pressing
and releasing the program button on the side of the interface once and waiting 7 seconds for the LED to ash 3 times. PLEASE
NOTE: Due to the many different possible OEM SWC congurations, some applications may need to be reprogrammed
for the SWC assignments to make sense. Whatever you assign as aftermarket volume commands will also be the
OnStar volume commands.
4.The aftermarket radio must have an auxiliary input in order for the factory RSE audio to be retained through the cabin speakers.
5.RSC buttons that are identical to the SWC will mimic the SWC one for one.
6.The LED will ash whenever a SWC button is pressed.
SWC Connection
See above chart for
different radio type
connections
x3
Wiring SWC Connection
Power and Speaker
Connections
Rear Seat Entertainment
Audio Retention Harness
Aftermarket
Radio
Connections
Vehicle
Connections
Pacific Accessory Corporation
Light Green Parking Brake Output (-)
Pink Vehicle Speed Output
Blue Not Used
Blue / White Factory Amp Turn On
Input (required for Bose
systems)
Orange / White Illumination Output (+)
Purple / White Reverse Output (+)
Brown Loop Mute Loop - See
installation note 6.
Aftermarket Radio Connections
Yellow * +12v from RP5
Yellow * +12v from vehicle
Black ** Ground from RP5
Black ** Ground from vehicle
Red Acc. Output
White Front Left + input
White / Black Front Left - input
Grey Front Right + input
Grey / Black Front Right - input
Green Rear Left + input
Green / Black Rear Left - input
Purple Rear Right + input
Purple / Black Rear Right - input
SWC Connector
Blue / Yellow Kenwood, Newer JVC
3.5mm Jack
Alpine, JVC, Clarion,
Fusion, Pioneer, Sony,
Dual, Axxera, Lightning
Audio, Jensen, Rockford
Fosgate
IMPORTANT NOTES REGARDING YELLOW AND BLACK WIRE CONNECTIONS
* Connect both Yellow wires from the
RP5 harnesses to the radio’s 12v
constant input.
** Connect both Black wires from the
RP5 harnesses to the radio’s ground
input.

Radio Replacement & Steering Wheel Control Interface
with OnStar Retention for General Motors Vehicles
RP5-GM11
Pacific Accessory Corporation
Page 2
Rev: 5
Date: 050918
Installation Steps
1. The radio select rotary switch on the side of the interface must be adjusted to the proper radio
setting before plugging the interface into the vehicle.
2. Make all connections as described in the chart on page 1. Be sure to connect both Yellow wires (one from vehicle harness
and one from RP5 harness) and both Black wires (one from vehicle harness and one from RP5 harness) while making these
connections.
3. Factory installed ampliers will determine the audio output connection. If the vehicle has a factory installed amplier use the
factory amplier audio location. If a factory installed amplier is not present use the non-amplied factory audio location.
4. If the aftermarket radio is equipped with an auxiliary input and you wish to retain the factory RSE audio, plug the RCA
connectors from the secondary harness into the radios auxiliary input.
5. With the ignition off and the driver door opened: Connect the interface to the vehicle’s harness(es). Connecting the
interface with the ignition on can cause erratic behavior. Please make sure the ignition is off and the driver door is opened
when performing this step.
6. Plug the CMX chime module in if necessary (If the vehicle chimes when the radio is removed the CMX is not necessary).
PLEASE NOTE: In order to get the best possible sound out of the CMX, please mount it in a place free and clear of any
obstructions, preferably as close as possible to the bottom of the dash pointing down toward the oor of the vehicle.
7. The Mute loop (if not cut) will turn the accessory output off when an OnStar or Bluetooth call is made or received. If the
aftermarket radio has a mute input, cut this loop and connect the outer brown wire to the mute input.
8. Connect the SWC wire according to the chart on page 1 (aftermarket radio MUST support a wired remote input).
9. If you wish to reassign functions to the SWC follow the programming instructions on the next page.
IMPORTANT! The interface comes pre-programmed for the functions listed in the chart below and does not require programming
unless you wish to re-assign the SWC functions to different buttons. The SWC can always be restored to default settings by
pressing the program button on the side of the interface once and waiting seven seconds for the LED to ash three times.
Alpine JVC Kenwood Clarion Sony / Pioneer Fusion
Volume +
Volume + Volume + Volume + Volume + Volume + Volume +
Volume -
Volume - Volume - Volume - Volume - Volume - Volume -
Source Up
Source Source Disc/FM+ Source Source Source
Source Down
Band Preset + Disc/AM N/P Band Off
Seek Up
Track + Track + Track + Search + Track + Track +
Seek Down
Track - Track - Track - Search - Track - Track -
Voice
Voice Voice Voice Voice Voice Mute
Prog Preset Up Preset - Source Band Preset + Audio
Default Steering Wheel Control Programming
Default SWC Button Assignments
Alpine JVC Kenwood Clarion Sony / Pioneer Fusion
Volume +
Volume + Volume + Volume + Volume + Volume + Volume +
Volume -
Volume - Volume - Volume - Volume - Volume - Volume -
Seek Up
Track + Track + Track + Search + Track + Track +
Seek Down
Track - Track - Track - Search - Track - Track -
Voice
Voice Voice Voice Voice Voice Mute
End Source Source Source Source Source Source
Default SWC Button Assignments (Corvette)
1
2
3
4
5
6
7
8
9
0
Alpine JVC Kenwood /
Lightning Audio Clarion / Nakamichi Pioneer / Other* Sony Fusion
1 2 3 4 7 8 9
*Other - Dual / Axxera, Jensen, Rockford Fosgate
SET RADIO SELECT SWITCH

Radio Replacement & Steering Wheel Control Interface
with OnStar Retention for General Motors Vehicles
RP5-GM11
Pacific Accessory Corporation
Page 3
Rev: 5
Date: 050918
Optional Steering Wheel Control Programming
Alpine
JVC
Kenwood
Clarion
Other *
Pioneer
Sony
Fusion
1
Volume +
Volume +
Volume +
Volume +
Volume +
Volume +
Volume +
Volume +
2
Volume -
Volume -
Volume -
Volume -
Volume -
Volume -
Volume -
Volume -
3
Mute
Mute
Mute
Mute
Mute
Mute
Mute
Mute
4
Preset +
Source
Source
Source
Preset +
Preset +
Preset +
Source
5
Preset -
Track +
Play
Search +
Preset -
Preset -
Preset -
Track +
6
Source
Track -
Track +
Search -
Source
Source
Source / End Call
Track -
7
Track +
Band / Disc +
Track -
Band
Track +
Track +
Track +
Audio
8
Track -
Preset / Disc -
Disc / FM +
Send / End
Track -
Track -
Track -
Power
9
Power
Select
Disc / AM -
Send
Band
Band
Band
10
Enter / Play
Attenuation
Answer
End
Answer **
Phone Menu
Power / End Call
11
Band / Program
Phone Receive
Voice
Voice
End **
Answer Call
Voice / Answer / End Call
12 Receive Phone Reject On Hook PTT ** End Call Voice (Android Auto & Car
Play) Answer / End Call***
13
End
Voice
Off Hook
Voice
14
Voice
Power
Mute
15 Preset +
* Dual / Axxera, Jensen, Rockford Fosgate ** Jensen ONLY ***
XAV-AX100 / 200 Only
Optional Programming Order
Programming
1. Turn the key to the ignition position.
2. Press and release programming button on the side of the interface.
3. Within 7 seconds, press the button that is to be learned on the steering wheel. The LED will turn off when the button is pressed.
4. If you need to program more buttons, repeat step 3 for each additional audio function on the steering wheel.
5. If you come across a function in the chart that your steering wheel does not have, or you do not want to program, press and
release the program button on the side of the interface to skip that function.
6. Once programming is completed, wait seven seconds. The LED will ash three times indicating end of programming.
7. Test the interface for proper functionality. Whenever a SWC is pressed the LED on the interface should blink. If any function
does not work, repeat the programming steps.
If you wish to re-assign the SWC functions the interface must be programmed in the specic order shown on the chart below. If
you come across a function in the chart that your steering wheel does not have, or you do not want to program, press and release
the programming button on the side of the interface to skip that function. The LED will ash off and on conrming that you have
successfully skipped that function and are ready to proceed to the next one.
Testing and Verication
1. Turn the ignition on. The LED on the interface will turn on and the +12v accessory wire will turn on.
2. Turn on the radio and check balance and fade. Note: Premium Factory amplied Systems will not fade as neither the
aftermarket radio or the RP interface have the ability to control the amplier’s fader.
3. Verify that the factory subwoofer (if present) is playing.
4. Verify that all SWC are functioning properly for both the aftermarket radio and OnStar. To adjust OnStar volume, press the
OnStar button on the mirror then use the volume buttons on the SWC to adjust the level. The volume will raise a total of 8
times before returning to the original level.
5. Pressing the OnStar button on the rearview mirror will turn off the rear speakers and allow the OnStar audio to be heard in
the two front speakers. The OnStar active LED will also turn on. When OnStar disconnects, the radio will un-mute or turn
back on and the OnStar LED will turn off. Pressing the Mute/OnStar button on the steering wheel for 1.5 seconds will also
activate Onstar.
6. Turn off vehicle and remove key. RAP will be active and keep the radio on for 10 minutes or until the drivers door is opened.

Radio Replacement & Steering Wheel Control Interface
with OnStar Retention for General Motors Vehicles
RP5-GM11
Pacific Accessory Corporation
Page 4
Rev: 5
Date: 050918
Testing and Verication (cont.)
7. The LED and radio will turn off when RAP turns off or the drivers door is opened.
8. Use the 4-position selector switch located on the side of the CMX module to select the best chime output volume for your
specic installation. Setting 1 being loudest and 4 softest.
Rear Seat Entertainment (RSE); If equipped
The factory RSE system will function independently from the aftermarket radio. The unit will power up and pass audio through
the headphones as long as the vehicle’s ignition is on. If you wish to pass audio from the RSE to the aftermarket radio you must
connect the RCAs from the 12-pin connector to the aftermarket radios auxiliary input. Select the aftermarket radios auxiliary input
to hear RSE audio.
OnStar Volume Adjustment for Vehicles w/o SWC
1. If SWC buttons are not present you must use the
programming button on the interface to control the OnStar
audio level during an OnStar connection.
2. When OnStar is active pressing the programming button
will raise the audio level 8 times before returning to the
original level. Every time the button is pressed a
conrmation beep will be heard.
SWC Connection
See above chart for
different radio type
connections
x3
Press the programming button
on the side of the interface while
OnStar is active to adjust the
OnStar volume
CMX
chime module
1
4
2
3
Technical Support and Product Updates (Firmware)
The RP5-GM11 can be updated with new firmware as it becomes available using the PAC-UP interface updater (sold
separately).

Power Redirection
Tech Brief
RSTX / RP5 / OS
Accessory Shutdown at High Volume
Pacific Accessory Corporation
Issue:
Accessory output drops at high volume.
Solution:
By cutting the constant and ground wires at the interface connector of the “Radio Connections” harness, the power path to the
accessory relay and the aftermarket radio is altered. The power is then sourced from the vehicle side of the wiring harness and
prevents any current from being pulled through the interface.
If your harness looks like this, skip to
page 2. If your harness looks like this, follow steps below then proceed with page 2.
Without extended
power and ground
wires.
*Vehicle connector may
dier depending on part
being used
*Vehicle connector may
dier depending on part
being used
With extended
power and
ground wires.
STEP 1 Isolate Yellow (B+) and Black (GND) on
vehicle-side wiring harness and prepare them to be spliced STEP 2 Use spare wire to splice into the Yellow (B+) and Black (GND) wires in the vehicle-side harness.
STEP 3 Connect newly extended wires to the Yellow
(B+) and Black (GND) wires on the radio-side harness as
well as the Yellow (B+) and Black (GND) wires from the
aftermarket radio.
Proceed with page 2
Connect wires from vehicle-side to radio-side of interface harness.

Power Redirection
Tech Brief
RSTX / RP5 / OS
Accessory Shutdown at High Volume
Pacific Accessory Corporation
STEP 1
Isolate and cut Yellow (B+) and Black (GND) at
interface connector of radio connections harness.
STEP 2
Cover ends of exposed wires with heat shrink to
insulate and prevent potential shorts.
STEP 3
Tape loose ended wires to bundle of harness.
Disconnect the Yellow (B+) and Black (GND) wires from the interface
connector on the “Radio Connections” Harness.
STEP 4
Wire up and connect everything else as you
normally would and install into the vehicle.

RP5-GM11
Technical Bulletin
Condition: Interface clicks ACC 12v relay in harness repeatedly and does not operate
Aected Products: RP5-GM11 with revision 1.2.6.8 and LOT # 38710. The label with the revision number can be found
on the module and the bottom of the packaging.
Solution: Update unit with our PAC-UP programming tool and the latest firmware.
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