
Pacic Accessory Corporation - Santa Ana, CA 92705
866-931-8021 • www.pac-audio.com
Connect the speaker level radio outputs to C2R-GM11’s speaker inputs. If the vehicle and the interface both chime, move the
chime switch to the off position. The other wire connections are as follows:
• Yellow - 12 Volt Constant Voltage
• Red - 12 Volt R.A.P Voltage (1 AMP max)
• Blue/White - Antenna turn on, Amplier turn on
• Orange - Dimmer/Illumination
• Lt. Green - SWC Output Wire
Using the SWC Output wire - Connect the SWC (green) output wire to a P.A.C.
SWI interface. Use the green SWI interface wire and program the SWI interface
for version 1. Do not cut the Brown loop.
**If more than 1 AMP is needed from the Red +12v Accessory wire refer to Fig 1.
Interface for GMLAN 11-bit
The C2R-GM11 allows aftermarket radio installation without retention of the factory radio. The interface replicates all factory
warning chimes, audible turn signal indicators and provides a data bus generated 12 volt accessory output that acts just as GM’s
R.A.P. (Retained Accessory Power) system did prior to radio removal. R.A.P. keeps the radio powered after the key is off, until the
driver door is opened or a 10 minute timer ends, whichever comes rst. The C2R-GM11 will work with or without factory amplied
This Interface is Intended for use in Vehicles without OnStar® or when OnStar®
is not serviced or is unwanted. For OnStar® Retention use the OS-3/11.
Pacific Accessory Corporation
GMLAN Warning Chime and Radio
Amp Turn On / Antenna (Blue)
DISCLAIMER: Under no circumstances shall the manufacturer or the distributors of the C2R-GM11 parts be held liable for consequential damages sus-
tained in connection with the C2R-GM11. The manufacture and it’s distributors will not, nor will they authorize any representative or any other individual
to assume obligation or liability in relation to the C2R-GM11 other than its replacement.