Owner's Manual

RP4-GM31
Radio Replacement & Steering Wheel Control Interface
for General MotorsVehicles
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Rev. 022013
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Important Notes
Wiring Connection Chart
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The RP4-GM31 interface allows the replacement of a factory radio in select General Motors vehicles with 29-bit LAN
radios. Using this interface will retain factory features such as steering wheel controls (SWC), Warning Chimes, Rear
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driven outputs such as retained accessory power (RAP), vehicle speed sensor (VSS), illumination, reverse trigger and
parking brake.
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Interface Connector
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Vehicle Connector
SWC Connector
9
1
Pacific Accessory Corporation
Interface Connector
See above chart for
wire color descriptions.
Vehicle Connector
See above chart for
wire color description.
SWC Connection
See above chart for
different radio type
connections
Wiring SWC Connection
Page 1
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