PAC C2R-GM29 User Manual

C2R-GM29

GM Radio Replacement

Interface for GMLAN Vehicles

Without OnStar®

VPW	Arbitration	Class 2	J1850	Class 2	EOD	J1850	CRC	Class 2	J1850	Class 2
1 0 0 0 1 1 1 0 1 1 1 1 0 0 1 0 0 1 1 0 1 1 0 0					1 1 1 0 1 0 0 0 0 1 1 0 1 1 0 1 1 1 0 0 1 1 0 0			1 0 0 0 1 1 1 0 1 1 1 1 0 0 1 0 0 1 1 0 1 1 0 0	1 1 1 0 1 0 0 0 0 1 1 0 1 1 0 1 1 1 0 0 1 1 0 0

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 or OS-3BOSE.

The C2R-GM29 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 first. The C2R-GM29 also provides a SWC (Steering Wheel Control) output wire at the interface. By using this interface, the Parking Assist System will receive a “healthy” system status and the Rear Seat Audio controls will also be available for use (if equipped).

Installation:

If the Bose® Audio system is being used, connect the C2R-GM29’s RCA inputs to the aftermarket radios pre-amp output. The audio level will vary depending on the new radios pre-amp output voltage (2-4 volts is recommended). If the Bose® Audio system is not used or present, cut the RCA inputs off and connect the new radios speaker outputs to the remaining wire. 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
• Black - Ground		Fig. 1			High Current 12v
• Red - 12 Volt R.A.P Voltage (1 AMP max)		(using a SPDT relay)
							(Fused)
• Blue/White - Antenna turn on, Amplifier turn on, and RSE turn on (if equipped)
• Orange - Dimmer/Illumination		12v Acc.	85		87		86	Ground
• Lt. Green - SWC Output Wire		From
		Interface				87a
Using the SWC Output wire - Connect the SWC (green) output wire to a P.A.C. SWI interface.							30
		Diode 1N4005
		or equivelant			New High
Use the green SWI interface wire and program the SWI interface for version 2.	Follow ONLY the
					Current Output
interface programming instructions included with the SWI interface. Do not cut the Brown loop.

**If more than 1 AMP is needed from the Red +12v Accessory wire refer to Fig 1.

1

2

3

4

A	B	C	D	E	F	G	H
							1
							2
	Illumination (Orange)				Only for		3
	Battery (Yellow)
					GMLAN
	Ground (Black)
					29 bit
	Amp Turn On / Antenna (Blue)
					Vehicles.	Pacific Accessory Corporation
	+12 Acc.1 AMP max (Red)
						GMLAN Warning Chime and Radio
	SWC Output (Lt. Green)
					Chime On / Off	Replacement Interface	4
	*Use Version #2*
A	B	C	D	E	F	G	H

These Buttons will perform the

same function as the Steering Wheel Buttons do (when a SWC interface

is used)

On

Turns the

Rear Seat

Audio on

and off

Using the RSA Controls

The headphone jacks will play the rear zone source selected by the head unit (refer to the new radios instruction manual for details on this feature if equipped).

Notes: When the Rear Seat Audio jacks are activated in any vehicle OTHER than the Cadillac Escalade or GMC

Yukon Denali the rear speakers will mute.

DISCLAIMER: Under no circumstances shall the manufacturer or the distributors of the C2R-GM29 parts be held liable for consequential damages sustained in connection with the C2R-GM29. 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-GM29 other than its replacement.

	07-30-07	Pacific Accessory Corporation - 1502 S. Santa Fe Street, Santa Ana, CA 92705
		[e-mail] • Voice: 714-835-3022 • Fax: [phone] • www.pac-audio.com