PAC GM3 2.1b Harness GM3HXM: (With XM)

2.1b Harness GM3HXM: (With XM)

1.Locate factory XM tuner. It is often located behind the glove box. Remove

any panels if necessary to access XM tuner’s 16-pin harness. Unplug the

16-pin harness.

2. Plug the male end of the GM3HXM harness into the 16-pin port on the

XM tuner. Next connect the factory male 16-pin into the 16-pin female con-

nector on the GM3HXM harness.

3. Optional Connections:

RED: Retains Accessory Power (RAP). Provides 12V(+) accessory power

after the vehicle is turned off up to 10 minutes, or until the drivers door

is open.

RED/WHITE: Non functional wire; no connection is necessary.

Note: Insulate all wires that are on the iPAC-GM3 harness that are not

used for installation

4. Connect the 8-pin connector on the iPod docking cable to the iPAC-

GM3 interface. (DO NOT CONNECT iPOD AT THIS TIME, WAIT UNTIL

INITIALIZATION IS COMPLETE, SEE SECTION 2.2 FOR DETAILS)

5. Plug the male 24-pin connector of the GM3H harness into the

iPAC-GM3 interface.

Male Plug 16 Pin Female Plug

Factory 16 Pin Harness

GM3HXM Harness

16 Pin Male Plug

RCA

CABLE

iPod PLUG

& CABLE

32 Pin Power

Audio Harness

iPAC-GM3

OPTIONAL

AUDIO

SOURCE XM TUNER

iPod

Red Wire From T-harness Optional

ACC +12V OUTPUT works with RAP

( Retained Accessory Power)